Worksaver HPD-16 HFL Owner's manual

OWNER’S/
OPERATOR’S
MANUAL
MODEL NO.’s
HPD-16 MFL
HPD-16 HFL
HPD-20 MFL
HPD-20 HFL
CAUTION
For Safe Operation
Read Rules And
Instructions Carefully
SINO LEEINGLES, PIDA AYUDA
A AIGUIEN QUE SI LO LEA
PARA QUE LE TRADUZCA LAS
MEDIDAS DE SEGURIDAD.
Safety Instructions Assembly & Mounting
Tractor Preparation Maintenance
Operating Instructions Repair Parts
HYDRAULIC POST DRIVERS
WHEN ORDERING REPAIR PARTS,
ALWAYS GIVE THE FOLLOWING INFORMATION:
1. PART NUMBER
2. PART DESCRIPTION
3. MODEL NUMBER
4. NAME OF ITEM
OWNER’S/
OPERATOR’S
MANUAL
MODEL NO.’s
HPD-16 MFL
HPD-16 HFL
HPD-20 MFL
HPD-20 HFL
CAUTION
For Safe Operation
Read Rules And
Instructions Carefully
SINO LEEINGLES, PIDA AYUDA
A AIGUIEN QUE SI LO LEA
PARA QUE LE TRADUZCA LAS
MEDIDAS DE SEGURIDAD.
JUNE 2007
WS-PH014-OG
WORKSAVER, INC.
P.O. BOX 100 LITCHFIELD, IL 62056-0100 [phone]
WEB: http:// www.worksaver.com E-MAIL: [e-mail]
MAKE EVERY DAY
A HOLIDAY FROM ACCIDENTS
Model HPD-20 MFL Shown
FRONT LOADER MOUNTED
HYDRAULIC POST DRIVERS
CAUTION
THE FOLLOWING SAFETY PRECAUTIONS SHOULD BE THOROUGHLY UNDERSTOOD
BEFORE ATTEMPTING TO BEGIN ASSEMBLING THIS MACHINE
1. Select an area for assembly that is clean and free of any
debris which might cause persons working on the
assembly to trip.
2. Do not lift heavy parts or assemblies. Use crane, jack,
tackle, fork trucks or other mechanical devices.
3. Preview the assembly instructions in your operator’s
manual before proceeding further.
4. If the assembly instructions call for parts or assemblies to
be blocked up, use only blocking material that is in good
condition and is capable of handling the weight of the
assembly to be blocked. Also insure that the blocking
material is on a clean, dry surface.
5. Never put hands, or any part of body, under blocked up
assemblies if at all possible.
6. After completing assembly, thoroughly inspect the
machine to be sure that all nuts, bolts, hydraulic fittings
or any other fastened assemblies have been thoroughly
tightened.
7. Before operating the machine, thoroughly read the
operation section of your operator’s manual.
8. Before operating, read the maintenance section of your
operator’s manual to be sure that any parts requiring
lubrication, such as gearboxes, are full, to avoid any
possible damage.
9. Before operating equipment – If you have any
questions regarding the proper assembly or
operation, contact your dealer or representative.
SAFETY PRECAUTIONS
MOST ACCIDENTS OCCUR BECAUSE OF NEGLECT OR CARELESSNESS.
AVOID NEEDLESS ACCIDENTS BY FOLLOWING ALL OF THE SAFETY PRECAUTIONS LISTED BELOW.
•Machinery should be operated only by those who are
responsible and are authorized to do so.
•Stop the engine, lower all equipment, lock the brakes,
and remove the ignition key before dismounting from the
tractor.
•Never stand between tractor and implement while tractor
is being backed to hitch.
•Loose fitting clothing should not be worn, to avoid catch-
ing on various parts.
•Detach implement in area where children normally do not
play.
•When performing adjustments or maintenance on an
implement, first lower it to the ground or block it securely
at a workable height.
•Only a qualified operator should be permitted on tractor
when in operation; no riders allowed.
•Make certain everyone is in the clear before starting
tractor or raising or lowering equipment.
•Operate the tractor and implement only while seated in
the driver’s seat.
• Reduce speed when transporting mounted implements
to avoid bouncing and momentary loss of steering
control.
•A heavy load can cause instability of the tractor. Use
extreme care during road travel. Slow down on turns and
watch out for bumps. Tractor may need front counter-
weights to counter-balance the weight of the implement.
•Reduce speed on hillsides or curves so there is no
danger of tipping.
•Avoid driving too close to the edge of ditches or creeks.
•Do not transport implement on public roads without
reflectors and slow moving vehicle emblem in daylight
and with approved warning lights at night and other
periods of poor visibility.
•Due to the width of some implements, use extra caution
on highways, farm roads, and when approaching gates.
•Always be sure the implement is in the proper position for
transport.
•Keep alert and watch the front as well as the rear when
working with the implement.

134
TABLE OF CONTENTS
WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
SAFETY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
SAFETY SIGNS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
PREPARATION INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . 13
OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . 18
SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
TROUBLE-SHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
PARTS LISTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25-34
TO THE OWNER:
Read this manual before using your Hydraulic Post Driver. This manual is provided to give you the necessary
operating and maintenance instructions for keeping your Hydraulic Post Driver in top operating condition. Please
read this manual thoroughly. Understand what each control is for and how to use it. Observe all safety signs on
the machine and noted throughout the manual for safe operation of implement. Keep this manual handy for ready
reference.
Like all mechanical products, it will require cleaning and upkeep. Lubricate the Post Driver as specified.
Use only genuine Worksaver, Inc. service parts. Substitute parts will void the warranty and may not meet stan-
dards required for safe and satisfactory operation. Record the model and serial number of your Post Driver here:
Model:________________________________________ Serial Number:_______________________________
RETAIL CUSTOMER’S RESPONSIBILITY
It is the Retail Customer and/or Operator’s responsibility to read the Operator’s Manual, to operate, lubri-
cate, maintain, and store the product in accordance with all instructions and safety procedures. Failure
of the operator to read the Operator’s Manual is a misuse of this equipment.
It is the Retail Customer and/or Operator’s responsibility to inspect the product and to have any part(s)
repaired or replaced when continued operation would cause damage or excessive wear to other parts or
cause a safety hazard.
It is the Retail Customer’s responsibility to deliver the product to the authorized Worksaver Dealer, from
whom he purchased it, for service or replacement of defective parts which are covered by warranty.
Repairs to be submitted for warranty consideration must be made within forty-five (45) days of failure.
It is the Retail Customer’s responsibility for any cost incurred by the Dealer for traveling to or hauling
of the product for the purpose of performing a warranty obligation or inspection.
SINO LEEINGLES, PIDA AYUDA A
AIGUIEN QUE SI LO LEA PARA QUE
LE TRADUZCA LAS MEDIDAS DE
SEGURIDAD.
STATEMENT
OF POLICY
It is the policy of Worksaver,
Inc. to improve its products where
it is possible and practical to do
so. Worksaver, Inc. reserves the
right to make changes or
improvements in design and con-
struction at any time, without
incurring the obligation to make
these changes on previously
manufactured units.
HYDRAULIC FRONT LOADER MOUNT PARTS LIST

33 2
LIMITED WARRANTY
✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯
Worksaver warrants to the original purchaser of any new Hydraulic Post Driver, that the equipment be free from
defects in material and workmanship for a period of twenty-four (24) months for non-commercial, state, and
municipalities. Use ninety (90) days for commercial use from date of retail sale.
Replacement or repair parts installed in the equipment covered by this warranty are warranted for ninety (90)
days from the date of purchase of such part or to the expiration of the applicable new equipment warranty
period, whichever occurs later.
Such parts shall be provided at no cost to the user during regular working hours. Worksaver reserves the right
to inspect any equipment or parts which are claimed to have been defective in material or workmanship.
DISCLAIMER OF IMPLIED WARRANTIES & CONSEQUENTIAL DAMAGES
Worksaver’s obligation under this warranty, to the extent allowed by law, is in lieu of all warranties, implied or
expressed, including implied warranties of merchantability and fitness for a particular purpose and any liabili-
ty for incidental and consequential damages with respect to the sale or use of the items warranted. Such
incidental and consequential damages shall include but not be limited to: transportation charges other than
normal freight charges; cost of installation other than cost approved by Worksaver; duty; taxes; charges for
normal service or adjustments; loss of crops or any other loss of income; rental of substitute equipment,
expenses due to loss, damage, detention or delay in the delivery of equipment or parts resulting from acts
beyond the control of Worksaver.
THIS WARRANTY SHALL NOT APPLY:
1. To vendor items which carry their own warranties, such as hydraulic motors, valves, and hydraulic cylinders.
2. If the unit has been subjected to misapplication, abuse, misuse, negligence, fire or other accident.
3. If parts not made or supplied by Worksaver have been used in connection with the unit, if, in sole judge-
ment of Worksaver such use affects its performance, stability, or reliability.
4. If the unit has been altered or repaired outside of an authorized Worksaver dealership in a manner which,
in the sole judgement of Worksaver affects its performance, stability or reliability.
5. To normal maintenance service and normal replacement items such as gearbox lubricant, hydraulic fluid,
worn blades, or to normal deterioration of such things as belts and exterior finish, due to use or exposure.
6. To expendable or wear items such as slide blocks, bumpers, springs and other items that in the company’s
sole judgement is a wear item.
NO EMPLOYEE OR REPRESENTATIVE OF WORKSAVER IS AUTHORIZED TO CHANGE THIS
WARRANTY IN ANY WAY OR GRANT ANY OTHER WARRANTY UNLESS SUCH CHANGE IS MADE IN
WRITING AND SIGNED BY WORKSAVER’S SERVICE MANAGER, POST OFFICE BOX 100, LITCHFIELD,
ILLINOIS 62056-0100.
✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯ ✯
HYDRAULIC FRONT LOADER MOUNT
PARTS DRAWING
NOTE: Post Drivers prior to S/N 2656 (HPD-16)
and S/N 3005 (HPD-20) used valve #814734 (Gresen).

332
To the Owner/Operator/Dealer
All implements with moving parts are potentially hazardous. There is no substitute for a cautious, safe-minded opera-
tor who recognizes the potential hazards and follows reasonable safety practices. The manufacturer has designed this
implement to be used with all its safety equipment properly attached to minimize the chance of accidents.
BEFORE YOU START!!
Read the safety messages on the implement and shown in your manual.
Observe the rules of safety and common sense!
THIS SAFETY ALERT SYMBOL IDENTIFIES IMPORTANT
SAFETY WARNING MESSAGES. CAREFULLY READ EACH
WARNING MESSAGE THAT FOLLOWS. FAILURE TO
UNDERSTAND AND OBEY A SAFETY WARNING, OR
RECOGNIZE A SAFETY HAZARD, COULD RESULT IN AN
INJURY OR DEATH TO YOU OR OTHERS AROUND YOU.
THE OPERATOR IS ULTIMATELY RESPONSIBLE FOR THE
SAFETY OF HIMSELF, AS WELL AS OTHERS, IN THE
OPERATING AREA OF THE TRACTOR AND ATTACHED
EQUIPMENT.
THIS SYMBOL MEANS
– ATTENTION!
– BECOME ALERT!
– YOUR SAFETY IS INVOLVED!
UNDERSTAND SIGNAL WORDS
Note the use of the signal words DANGER, WARNING
and CAUTION with the safety messages. The
appropriate signal word for each has been selected
using the following guidelines:
DANGER: Indicates an imminently hazardous situation
that, if not avoided, will result in death or serious injury.
This signal word is to be limited to the most extreme
situations typically for machine components which, for
functional purposes, cannot be guarded.
If you have questions not answered in this manual or require additional copies or the manual is damaged, please
contact your dealer or the manufacturer directly.
WARNING: Indicates a potentially hazardous sit-
uation that, if not avoided, could result in death
or serious injury, and includes hazards that are
exposed when guards are removed. It may also
be used to alert against unsafe practices.
CAUTION: Indicates a potentially hazardous sit-
uation that, if not avoided, may result in minor or
moderate injury. It may also be used to alert
against unsafe practices.
IMPORTANT SAFETY INFORMATION!
Working with unfamiliar equipment can lead to careless injuries. Read this manual, and the manual for your tractor,
before assembly or operating, to acquaint yourself with the machines. It is the Post Driver owner’s responsibility, if this
machine is used by any person other than yourself, is loaned or rented, to make certain that the operator, prior to
operating: 1. Reads and understands the operator’s manuals.
2. Is instructed in safe and proper use.
The use of this equipment is subject to certain hazards which cannot be protected against by mechanical
means or product design. All operators of this equipment must read and understand this entire manual, pay-
ing particular attention to safety and operating instructions, prior to using. If there is something in this manual
you do not understand, ask your supervisor, or your dealer, to explain it to you.
Most accidents occur because of neglect or carelessness. Keep all helpers and bystanders twenty-five feet
(25’) from an operating driver. Only properly trained people should operate this machine. It is recommended
the tractor be equipped with a Rollover Protection System (ROPS) and a seat belt that is used. Always engage
parking brake or place transmission in “Park” before dismounting tractor. Never leave equipment unattended
with the tractor running.
MANUAL FRONT LOADER MOUNT
PARTS DRAWING & LIST

31 4
SAFETY INSTRUCTIONS (continued)ADJUSTABLE MANUAL BASE
MOUNTING PACKAGE
PARTS DRAWING & LIST
Safety of the operator is one of the main concerns in designing and developing a new piece of equipment.
Designers and manufacturers build in as many safety features as possible. However, every year many
accidents occur which could have been avoided by a few seconds of thought and a more careful approach to
handling equipment.You, the operator, can avoid many accidents by observing the following precautions in this
section. To avoid personal injury, study the following precautions and insist those working with you, or for you,
follow them.
In order to provide a better view, certain photographs or illustrations in this manual may show an assembly with
a safety shield removed. However, equipment should never be operated in this condition. Keep all shields in
place. If shield removal becomes necessary for repairs, replace the shield prior to use.
To prevent injury or death, use a tractor equipped with a Roll-Over Protective System (ROPS). Do not paint
over, remove or deface any safety signs or warning signs on your equipment. Observe all safety signs and
practice the instruction on them.
Never exceed the limits of a piece of machinery. If its ability to do a job, or to do so safely, is in question - DON’T
TRY IT.
Do not modify the equipment in any way. Unauthorized modification may impair the function and/or safety and
could affect the life of the equipment.
In addition to the design and configuration of this implement, including Safety Signs and Safety Equipment,
hazard control and accident prevention are dependent upon the awareness, concern, prudence, and proper
training of personnel involved in the operation, transport, maintenance, and storage of the machine. Refer also
to Safety Messages and Operation Instructions in each of the appropriate sections of the Tractor and Post
Driver Manuals. Pay close attention to the Safety Signs affixed to the Tractor and the Post Driver.
Replace any CAUTION, WARNING, DANGER or instruction safety sign that is not readable or is missing.
Location of such safety signs is indicated in this booklet.
Never use alcoholic beverages or drugs which can hinder alertness or coordination while operating this
equipment. Consult your doctor about operating this machine while taking prescription medications.
Review the safety instructions with all users annually.
This equipment is dangerous to children and persons unfamiliar with its operation. The operator should be a
responsible adult familiar with farm machinery and trained in this equipment’s operations. Do not allow per-
sons to operate or assemble this unit until they have read this manual and have developed a thorough
understanding of the safety precautions and of how it works.
EQUIPMENT SAFETY GUIDELINES

530
SAFETY INSTRUCTIONS (continued)
Keep safety signs clean and legible at all times.
Replace safety signs that are missing or have become illegible.
Replaced parts that displayed a safety sign should also display the current sign.
Safety signs are available from your Distributor or Dealer Parts Department or the factory.
How to Install Safety Signs:
• Be sure that the installation area is clean and dry.
• Be sure temperature is above 50°F (10°C).
• Decide on the exact position before you remove the backing paper.
• Remove the smallest portion of the split backing paper.
• Align the sign over the specified area and carefully press the small portion with the exposed sticky backing in place.
• Slowly peel back the remaining paper and carefully smooth the remaining portion of the sign in place.
• Small air pockets can be pierced with a pin and smoothed out using the piece of sign backing paper.
SAFETY SIGNS
Never operate the tractor and post driver until you have read and completely understand this manual, the Tractor
Operator’s Manual, and each of the Safety Messages found on the safety signs on the tractor and post driver.
Ensure post driver is properly mounted, adjusted and in good operating condition.
Personal protection equipment including hard hat, safety glasses, safety shoes, and gloves are recommended
during assembly, installation, operation, adjustment, maintaining, repairing, removal, or moving the implement.
Do not allow long hair, loose fitting clothing or jewelry to be around moving parts.
PROLONGED EXPOSURE TO LOUD NOISE MAY CAUSE PERMANENT HEARING LOSS!
Tractors with or without attachments can often be noisy enough to cause permanent, partial hearing loss. We
recommend that you wear hearing protection on a full-time basis if the noise in the Operator’s position exceeds
80db. Noise over 85db on a long-term basis can cause severe hearing loss. Noise over 90db adjacent to the
Operator over a long-term basis may cause permanent, total hearing loss. NOTE: Hearing loss from loud noise
(from tractors, chain saws, radios, and other such sources close to the ear) is cumulative over a lifetime with-
out hope of natural recovery.
PREPARATION
HYDRAULIC CONTROL VALVE &
MOUNTING BRACKET PARTS LIST

29 6
SAFETY INSTRUCTIONS (continued)HYDRAULIC CONTROL VALVE &
MOUNTING BRACKET PARTS DRAWING Please remember it is important that you read and heed the safety signs on the post driver, and the safety rules
set forth. Clean or replace all safety signs if they cannot be clearly read and understood. They are there for
your safety as well as the safety of others. The safe use of this machine is strictly up to you, the operator.
All things with moving parts are potentially hazardous. There is no substitute for a cautious, safe-minded
operator who recognizes potential hazards and follows reasonable safety practices. The manufacturer has
designed this driver to be used with all its safety equipment properly attached, to minimize the chance of
accidents. Study this manual to make sure you have all safety equipment attached.
Make sure that all operating and service personnel know that in the event hydraulic fluid penetrates the skin,
it must be surgically removed within a few hours by a doctor familiar with this form of injury, or gangrene may
result.
If a safety shield or guard is removed for any reason, it must be replaced before the machine is again operated.
Before servicing the machine, engage the parking brake or place the transmission in “Park”, shut off the trac-
tor and remove the key. Relieve all hydraulic pressure in lines.
When the use of hand tools is required to perform any part of assembly, installation, adjustment, maintaining,
repairing, removal, or moving the driver, be sure the tools used are designed and recommended by the tool
manufacturer for that specific task.
Personal protection equipment including hard hat, safety glasses, safety shoes, and gloves are recommended
during assembly, installation, operation, adjustment, maintaining, repairing, removal, or moving the driver. Do
not allow long hair, loose fitting clothing or jewelry to be around moving parts.
Always use two people to handle heavy, unwieldy components during assembly, installation, removal, or
moving the driver.
Never place any part of your body where it would be in danger if movement should occur during assembly,
installation, operation, maintaining, repairing, removal, or moving the driver.
Never place yourself between the tractor and post driver while implement is in operation.
Do not walk or work under a raised driver ram unless it is securely blocked or held in position. Do not depend
on the tractor hydraulic system to hold the driver ram in place.
Never leave post driver ram in the raised position. Always lower ram to the ground or to the transport position
and install the transport lock pin before transporting or storing.
A heavy load can cause instability of the tractor. Use extreme care during travel. Slow down on turns and
watch out for bumps. The tractor may need front counter-weights to counter-balance the weight of the driver.
Do not allow riders on the driver or tractor at any time. There is no safe place for any riders.
NOTE: Post Drivers prior to S/N 2656 (HPD-16)
and S/N 2987 (HPD-20) used valve #814473 (Gresen).

728
SAFETY INSTRUCTIONS (continued)
Before you operate the driver, check over all pins, bolts and connections to be sure all are securely in place.
Replace any damaged or worn parts immediately.
Consult local utility companies to make certain there are no buried gas lines, electrical cables, etc., in the work
area before beginning operation.
Do not allow anyone who is not familiar with the safety rules and operation instructions to use this Post Driver.
Never allow children to operate or be around this Post Driver.
Use stabilizer bars, adjustable sway chains, or sway blocks on your tractor lift arms to keep the Post Driver from
swinging side to side. Adjust as tightly as practical for best performance.
Clear the work area of objects which might cause operator to trip or fall.
Do not operate post driver on steep hillsides. When installing posts on uneven or hilly terrain, position the
tractor with the post driver uphill. This way if any movement of the tractor should occur, it will be away from the
post driver operator.
Never position the post by hand. Always use Post Holder Tool.
Watch out for low overhead electrical wires and limbs when operating or transporting the post driver. Check
clearance of doorways when entering a building.
Be sure post is cut “SQUARE” on top. Angle cut post can “KICK OUT” of driver and injure the operator.
Install transport lock pin and pin clip before transporting or storing the post driver. NEVER INSERT FINGER
IN TRANSPORT PIN HOLE TO CHECK ALIGNMENT. Finger could be sheared off if driving ram moves.
Keep hands, feet, hair, jewelry, and clothing, away from all moving parts.
Do not operate the Post Driver without all safety shields and guards in place.
When using a unit, a minimum 20% of tractor and equipment weight must be on tractor front wheels. Without
this weight, tractor could tip over, causing personal injury or death. The weight may be attained with a front end
loader, front wheel weights, ballast in tires of front tractor weights. When attaining a minimum 20% of tractor
and equipment weight on the front wheels, you must not exceed the ROPS weight certification. Weigh the
tractor and equipment. Do not guess or estimate!
Only use a tractor equipped with a ROPS cab or rollover protective structure. Keep foldable ROPS systems
in “locked up” position at all times. Keep seat belt fastened.
ALWAYS OBEY SAFETY WARNINGS!
HPD-20 PARTS LIST

27 8
Comply with state and local laws governing highway safety and movement of farm machinery on public roads.
The use of flashing amber lights is acceptable in most localities. However, some localities prohibit their use.
Local laws should be checked for all highway lighting and marking requirements.
When driving the tractor and equipment on the road or highway under 20 mph (32 kph) at night or during the
day, use flashing amber warning lights and a slow moving vehicle (SMV) identification emblem.
Always be sure the implement is in the proper raised position for transport.
Reduce speed when transporting mounted implements to avoid bouncing and momentary loss of steering
control.
Plan your route to avoid heavy traffic.
Always install transport locks, pins or brackets before transporting.
Do not drink and drive!
Watch for traffic when operating near or crossing roadways.
Turn curves or go up or down hills only at a low speed and at a gradual steering angle. Make certain that at
least 20% of the tractor’s weight is on the front wheels to maintain safe steerage. Slow down on rough or
uneven surfaces, and loose gravel.
Use extreme care and maintain minimum ground speed when transporting on hillside, over rough ground and
when operating close to ditches or fences. Be careful when turning sharp corners.
Never allow riders on either tractor or implement. Falling off can kill.
Be a safe and courteous driver. Always yield to oncoming traffic in all situations, including narrow bridges, inter-
sections, etc.
Do not exceed 20 mph (32 kph). Reduce speed on rough roads and surfaces.
TRANSPORT SAFETY
SAFETY INSTRUCTIONS (continued)HPD-20 PARTS DRAWING

926
SAFETY INSTRUCTIONS (continued)
Good maintenance is your responsibility. Poor maintenance is an invitation to trouble.
Follow good shop practices.
- Keep service area clean and dry.
- Be sure electrical outlets and tools are properly grounded.
- Use adequate light for the job at hand.
Make sure there is plenty of ventilation. Never operate the engine of the towing vehicle in a closed building.
The exhaust fumes may cause asphyxiation.
Before working on this machine, drive to a level area, disengage the PTO, lower implement (or if working
underneath, raise and block securely), shut off the engine, set the brakes, and remove the ignition keys.
Be certain all moving parts on attachments have come to a complete stop before attempting to perform
maintenance.
Never work under equipment unless it is blocked securely. Never depend on hydraulic system to keep imple-
ment in raised position.
Always use personal protection devices such as eye, hand and hearing protectors, when performing any
service or maintenance.
Keep all persons away from operator control area while performing adjustments, service, or maintenance.
Periodically tighten all bolts, nuts and screws and check that all cotter pins are properly installed to ensure unit
is in a safe condition.
When completing a maintenance or service function, make sure all safety shields and devices are installed
before placing unit in service.
Remove hydraulic pressure prior to doing any maintenance. Place the driver ram on the ground or securely
blocked up, disengage the PTO, and turn off the engine. Push and pull the remote cylinder lever in and out
several times to relieve hydraulic pressure.
Never use your hands to locate a hydraulic leak on attachments. Use a small piece of cardboard or wood.
Hydraulic fluid escaping under pressure can penetrate the skin.
Openings in the skin and minor cuts are susceptible to infection from hydraulic fluid. If injured by escaping
hydraulic fluid, see a doctor at once. Gangrene and death can result. Without immediate medical treatment,
serious infection and reactions can occur.
MAINTENANCE SAFETY
HPD-16 PARTS LIST

25 10
SAFETY INSTRUCTIONS (continued)HPD-16 PARTS DRAWING
After servicing, be sure all tools, parts and service equipment are removed.
Check to ensure all safety signs are installed and in good condition. (See safety sign section for location
drawing.)
Do not allow grease or oil to build up on any deck or platform.
Never replace hex bolts with less than grade five bolts unless otherwise specified, i.e. shear bolts. Refer to bolt
torque chart for head identification marking.
Where replacement parts are necessary for periodic maintenance and servicing, genuine factory replacement
parts must be used to restore your equipment to original specifications. The manufacturer will not claim respon-
sibility for use of unapproved parts and/or accessories and other damages as a result of their use.
If equipment has been altered in any way from original design, the manufacturer does not accept any liability
for injury or warranty.
A fire extinguisher and first aid kit should be kept readily accessible while performing maintenance on this
equipment.
Following operation, or when unhooking, stop the tractor, set the brakes, lower ram to lowest position and
engage transport lock pin, disengage the PTO, shut off the engine and remove the ignition keys.
Store the unit in an area away from human activity.
Do not park equipment where it will be exposed to livestock for long periods of time. Damage and livestock
injury could result.
Do not permit children to play on or around the stored unit.
Make sure all parked machines are on a hard, level surface and engage all safety devices.
If blocking is used, make sure it is solid and secure before leaving area.
MAINTENANCE SAFETY (continued)
STORAGE SAFETY

11 24
SAFETY INSTRUCTIONS (continued)
Safety is a primary concern in the design and manufacture of our products. Unfortunately, our efforts to pro-
vide safe equipment can be wiped out by a single careless act of an operator.
Know your controls and how to stop tractor, engine, and driver quickly in an emergency. Read this manual and
the one provided with your tractor.
In addition to the design and configuration of equipment, hazard control and accident prevention are depend-
ent upon the awareness, concern, prudence and proper training of personnel involved in the operation, trans-
port, maintenance and storage of equipment.
It has been said, “The best safety device is an informed, careful operator.” We ask you to be that kind of an
operator. It is the operator’s responsibility to read and understand ALL Safety and Operating instructions in the
manual and to follow these. Accidents can be avoided.
Train all new personnel and review instructions frequently with existing workers. A person who has not read
and understood all operating and safety instructions is not qualified to operate the machine. An untrained oper-
ator exposes himself and bystanders to possible serious injury or death.
Working with unfamiliar equipment can lead to careless injuries. Read this manual, and the manual for your
tractor, before assembly or operating, to acquaint yourself with the machines. It is the post driver owner’s
responsibility, if this machine is used by any person other than yourself, is loaned or rented, to make certain
that the operator, prior to operating:
1. Reads and understands the operator’s manuals.
2. Is instructed in safe and proper use.
SAFETY TRAINING
Do not allow children to operate this machine.
PROBLEM: POST VEERS OFF AT AN ANGLE WHILE
BEING DRIVEN
SOLUTIONS:
1. Top of post is not cut “square,” causing the post to drive
at an angle. Re-cut top of post “square.”
2. Bottom of post is cut at an angle or post is pointed off-
center.
3. Tractor has moved slightly while driving post. Always set
brakes and use extra care on slopes.
4. Adjustable legs on mount are not setting firmly on the
ground. Re-adjust legs.
5. Ground may be too dry or hard. Pointing the post may
help. You may have to wait until it rains if ground is
extremely hard and dry.
6. Post may be encountering a rock. Relocate post 6-8
inches and try again. Pointing post may help in light,
rocky soil.
7. Driver ram may be improperly angled – if top of ram is
angled away from post, ram will veer off post. Re-adjust
ram angle.
PROBLEM: OIL SQUIRTS OUT OF RETURN LINE
ORIFICE IN TRACTOR
SOLUTIONS:
1. Wrong return line fitting being used.
2. Return line not properly secured with wire or tarp strap.
3. Wrong tractor return line opening is being used. Check
tractor for alternate return opening.
3. Adjustable legs on mount are not setting firmly on the
ground. Re-adjust legs.
4. Carriage springs may be disconnected or broken.
5. Ground may be too dry or hard. Pointing the post may
help. You may have to wait until it rains if ground is
extremely hard and dry.
6. Post may be encountering a rock. Relocate post 6-8
inches and try again. Pointing post may help in light,
rocky soil.
7. Driver ram may be improperly angled – if top of ram is
angled away from post, ram will veer off post. Re-adjust
ram angle.
8. Tractor may not be large enough to handle driver. Use
larger heavier tractor.
PROBLEM: DRIVER HAS EXCESSIVE MOVEMENT
OR BOUNCE
SOLUTIONS:
1. Top of post is not cut “square,” causing the driver to veer
off at an angle. Re-cut top of post “square.”
2. Loader is not all the way down.
TROUBLE-SHOOTING (continued)
PROBLEM: SPRING AND/OR SPRING CLIP
BREAKAGE
SOLUTIONS:
1. Operator is continuously raising the ram to the full
height. It is only necessary to raise the ram 18-20 inch-
es to achieve full hitting force.
2. In colder temperatures, it will help to “warm-up” or
“season” the springs by first only raising the ram 6-8
inches, then 12-16 inches, then normal hitting height.
This allows the spring steel to warm-up and not be
subjected to full stretch when cold.
3. Springs and clips are a wear item on post drivers. It is
expected that these parts will have to be replaced
depending on length of use and when being subjected
to “hard driving” conditions.
OBEY ALL
SAFETY
WARNINGS

23 12
SAFETY SIGNS
OBEY ALL
SAFETY
WARNINGS
NOTE:
If Safety Sign is
missing or damaged,
replace immediately.
101202
Cylinder Locking Strap - Remove before using Post Driver
TROUBLE-SHOOTING
PROBLEM: DRIVER DOES NOT DRIVE A POST
SOLUTIONS:
1. The hydraulic valve return line is connected to a trac-
tor remote outlet and/or a quick coupler is being used.
Connect the return line directly to the tractor reservoir
filler opening.
2. The ram may be binding in the carriage or carriage slide
blocks may need lubrication or replacement.
3. Carriage springs may be disconnected or broken.
4. Ground may be too dry or hard. Pointing the post may
help. Otherwise, wait for rain.
5. Post may be encountering a rock. Relocate post 6-8
inches and try again. Pointing post may help in light,
rocky soil.
6. Remote hydraulic connection fittings not compatible.
Check for proper fitting.
7. Hydraulic oil flow problems on tractor.
PROBLEM: DRIVING RAM WILL NOT RAISE, OR
RAISES SLOWLY
SOLUTIONS:
1. Hydraulic valve may be improperly plumbed. See
assembly instructions.
2. Post Driver control valve handle “UP” limit screw may
need adjustment (see Figure H page 19).
3. Carriage may be binding. Check for broken springs,
worn slide blocks or other obstructions.
4. Hydraulic cylinder rod guide (piston) may be excessively
worn.
5. Tractor hydraulic system may not be supplying rated
pressure (usually 1500 to 2250 PSI). Consult your trac-
tor dealer.
6. Tractor hydraulic system may not be delivering its rated
volume of oil due to wear. Hydraulic pump may need to
be repaired.
7. Hydraulic valve on Post Driver is not compatible with
tractor hydraulic system. See Hydraulic Valve section in
this manual.
8. Hydraulic valve on Post Driver may be leaking and need
to be repaired or replaced.
9. Carriage may be bent due to hitting overhead object.
Straighten or replace carriage assembly.
PROBLEM: HYDRAULIC HOSE FAILURE
SOLUTIONS:
1. Tractor hydraulic relief pressure setting is very high and
may cause hydraulic hose failure. Requires plumbing
other work port of post driver control valve to return line.
2. Hoses are worn or frayed – replace hose.
3. Hose rating may be too low for hydraulic system
pressure. Replace with higher rated hoses.
4. Hose being pinched – reroute hose and refasten.
PROBLEM: HYDRAULIC OIL OVERHEATS
SOLUTIONS:
1. Hydraulic oil level in tractor may be low.
2. Hydraulic oil or oil filter in tractor may be dirty. Change
oil and filter according to tractor manufacturer’s recom-
mendations.
3. Hydraulic oil reservoir of tractor may be small. Allow time
for oil to cool down.
4. Hydraulic valve on Post Driver may not be compatible
with tractor hydraulic system. See Hydraulic Valve sec-
tion in this manual.
PROBLEM: DRIVER RAM AND CARRIAGE
ASSEMBLY MOVE FAST AND ARE
HARD TO CONTROL (Hyd. adjusted
models only)
SOLUTIONS:
1. Orifice fittings missing.
PROBLEM: DRIVER RAM RAISES VERY FAST AND
HITS TOP URETHANE BUMPERS
SOLUTIONS:
1. Post Driver control valve “UP” limit screw needs
adjusting.
2. Tractor model has high volume hydraulic oil pump. Set
tractor throttle at lower speed to reduce volume of oil or
if necessary, install an orifice in line to reduce volume of
oil.

13 22
TRACTOR REQUIREMENTS
AND PREPARATION
Both the manual and hydraulic positioning front loader
post driver mounts are designed to fit most farm tractor
double-cylinder front-end loaders. Optional brackets are
available to fit most popular bucket quick attach front-end
loaders.
NOTE: The tractor should be at least 40-50 hp in size
and the loader needs to have sufficient lift capacity to
handle the weight of the post driver and mount.
NOTE: The Post Driver front loader mount is only
recommended for tractors equipped with a rollover
protective structure (ROPS) or cab.
NOTE: Worksaver does NOT recommend the use of any
loader attachment on tractors with a front tricycle wheel
arrangement.
CAUTION!
Be sure your tractor and loader is in good condition.
Read all the safety precautions and make sure all
tractor operators are familiar with the safety rules of
operation.
CAUTION!
A heavy load can cause instability in driving a
tractor. Make sure the rear of the tractor is properly
counterbalanced with weights or a bale. Always drive
slowly – especially around turns. An unstable tractor
could steer badly and possibly tip over, causing
injury or death.
INSTRUCTIONS
These instructions are for the models HPD-16 MFL,
HPD-16 HFL, HPD-20 MFL, and HPD-20 HFL Front
loader mounted hydraulic post drivers.
The models HPD-16 MFL and HPD-20 MFL are manu-
ally adjusted post drivers. The manual adjusting base
have two threaded cranks to set the side to side and front
to back positioning of the driving ram.
The models HPD-16 HFL and HPD-20 HFL have the
driving ram positioning controlled hydraulically. A two
spool hydraulic valve controls the front to back and side
to side movement for aligning to a vertical position. A
separate single spool valve controls the raising and low-
ering of the driving ram.
Both the manual and the hydraulic positioning mounts
allow the driver to be mounted near the center or offset
(right or left) to the side of the tractor. It is suggested to
assemble the front loader mount offset to the left side as
it requires fewer steps from the tractor seat to operating
the post driver.
This also has easier positioning for driving posts along
ditch banks and existing fence lines.
The models HPD-16 MFL and HFL weigh 780 lbs. and
1018 lbs. respectively. It is recommended that these
models be used on tractors of at least 40 hp and that a
rear counter-weight of approximately 1000 lbs. be used.
The models HPD-20 MFL weighs 937 lbs. and the
model HPD-20 HFL weighs 1175 lbs. It is recommended
that these models be used on Category II tractors (50
HP +) and that a rear counter-weight of approximately
1000 lbs. be used.
Rear wheel weights, rear tire ballast, and size of tractor
being used will determine the counter-weight required (if
any).
The operator is responsible for the safe operation of this
equipment. The operator must be properly trained.
Operators should be familiar with the tractor, loader and
loader attachment, and all safety practices before start-
ing operation. Read the safety rules and safety signs on
pages 3-12.
The Models HPD-16 MFL/HFL and HPD-20 MFL/HFL
require a tractor a with a hydraulic system capable of 6-
8 GPM and at least 1500 psi.
NOTE: Loaders with only one hydraulic cylinder in the
center of the loader to tilt the bucket or attachment may
be used with the addition of an optional center bracket
(order bracket #830320).
Be sure your tractor is in good working order, particular-
ly the hydraulic system, prior to using the Post Driver. Be
sure the tractor hydraulic oil and filter have been serviced
according to the tractor manufacturer’s recommenda-
tions. The return oil from the driver must be connected
directly to the tractor hydraulic fill opening – NOT THE
THE TRACTOR REMOTE OUTLET. Special return
fittings are available, when required, for many popular
tractors. Check with your dealer for an application list.
Refer to your tractor owner’s manual or dealer to
determine if your tractor has an OPEN or CLOSED
hydraulic system. The hydraulic valve on the driving ram
MUST match your tractor hydraulic system. This valve is
convertible and is shipped ready for OPEN center
systems. See the “maintenance and adjustment” section
of this manual for conversion instructions.
SERVICE INSTRUCTIONS (continued)
CAUTION!
When traveling on public roads, whether at night or
during the day, use accessory light and devices for
adequate warnings to operators of other vehicles.
Comply with all federal, state and local laws.
Carry load low.
Check visibility. If visibility is impaired, reduce speed or
consider other means of bale transport.
Allow for additional length of loader on tractor while
turning.
Select a safe ground travel speed when transporting from
one area to another. When traveling on roadways, trans-
port in such a way that faster moving vehicles may pass
you safely.
When traveling over rough or hilly terrain or when making
turns, slow down and use extra care.
Read all the safety warnings in the front of the manual.
TRANSPORTING STORING THE POST DRIVER
Lower the ram to the lowest position and engage the
transport lock pin. This position will have the hydraulic
cylinder rod fully retracted into the cylinder and will be
self-protecting.
Smear grease over the exposed portion of the plated
hydraulic cylinder rod to prevent pitting and rust from
forming.
It is recommended to apply grease or oil to any exposed
portion of the tilt cylinders or threaded cranks to help
prevent rust from forming.
Be sure to cap the open return line hose end to prevent
contamination during storage. Lubricate all grease
fittings prior to storage.
Inside storage is preferred to prevent deterioration of the
springs, hoses, etc. For safety, the Driver should be
securely blocked for stability.
To store the front loader post driver mount with
adjustable legs, locate the transport locking pin into the
higher hole location in the ram and then adjust legs to
same height.
Make sure driver will be located on a solid surface and
in a location away from children, animals, or traffic area.
HPD-16 MFL HPD-16 HFL HPD-20 MFL HPD-20 HFL
(Manual) (Hydraulic) (Manual) (Hydraulic)
Maximum Post Size . . . . . . . . . . . . . . . . . . . . . . . . 7 in. x 9 ft. 83/4in. x 10 ft.
Impact at Full Stroke . . . . . . . . . . . . . . . . . . . . . . . 32,000 lbs. 80,000 lbs.
Impact at Half Stroke . . . . . . . . . . . . . . . . . . . . . . . 16,000 lbs. 40,000 lbs.
Minimum Tractor Size . . . . . . . . . . . . . . . . . . . . . . 40 PTO hp 50 PTO hp
Minimum Hydraulics Required . . . . . . . . . . . . . . . 3 - 4 gpm 6 - 8 gpm
Drive Cylinder Size . . . . . . . . . . . . . . . . . . . . . . . . 2” x 56” 2” x 68”
Operating Range (above ground) . . . . . . . . . . . . . 50” to 116” 50” to 128”
Tilt Adjustment – front/back . . . . . . . . . . . . . . . . . . 20° 17° 20° 17°
Tilt Adjustment – side/side . . . . . . . . . . . . . . . . . . 20° each way from vertical
No. of Cylinder(s)/Size . . . . . . . . . . . . . . . . . . . . . . Two 3” x 6” Two 3” x 6”
Shipping Weight . . . . . . . . . . . . . . . . . . . . . . . . . . 780 lbs. 1018 lbs. 937 lbs. 1175 lbs.
POST DRIVER SPECIFICATIONS
WARNING!
Power unit must be equipped with ROPS or ROPS
cab and seat belt. Keep seat belt securely fastened.
Falling off power unit can result in death from being
run over or crushed. Keep foldable ROPS systems in
“locked up” position at all times.

21 14
INSTRUCTIONS (continued)
PACKAGING
The Post Driver is shipped as four (4) bundles.
1. The driving ram assembly, on a pallet.
2. A hydraulic package for the ram, in a carton.
3. The loader frame with loader mounting brackets.
4. If a manual unit – the manual adjusting base and
frame.
5. If a hydraulic unit – the hydraulic base mount unit,
partially pre-plumbed.
A hydraulic package for the hydraulic base, in a
carton.
Please inspect these bundles for any obvious signs of
damage before attempting to assemble the Post Driver.
Unpack all the bundles and lay out the various parts.
ASSEMBLY & MOUNTING
The following procedure is recommended for assem-
bling the front loader mounted Post Driver. Carefully
follow instructions for final assembly.
Before attempting assembly check the following items.
Having all the needed parts and equipment readily at
hand will speed up your assembly task and will make the
job as safe as possible.
• Check for fasteners and pins that were shipped with
the post driver. Some hardware coming from the fac-
tory has been installed in the location where it will be
used. If a part or fastener is temporarily removed for
assembly reasons, remember where it goes. Keep the
parts separated.
• Have a fork lift or loader along with chains and safety
stands that are sized for the job ready for the
assembly task.
• Have a minimum of 2 people at hand during assembly.
• Check to see that all nuts are properly tightened.
Remove the bucket from your front end loader. Check
your loader to make sure it is in good working order.
Check all frame mounting bolts to make sure they are
tight.
Loaders that attach to the tractor frame rails should
have a cross-tie installed for stability.
Refer to the “exploded view” of the Front Mounted Post
Driver on page 32 or 33 of this manual.
If your tractor loader has a bucket Quick Attach feature,
check with your dealer on the availability of adapter
brackets for your brand and model loader.
For pin type loader bucket mountings, the following
instructions apply:
Assemble the two lift brackets on the main frame with
the 5/8” x 3” I.D. U-bolts. Leave the U-bolts loose.
NOTE: The lift channel brackets are supplied with 1”
diameter pins to fit your loader. If your loader requires
11/8” pins, it will be necessary for the hole diameter in the
channel brackets to be drilled out to 15/32” (1.156”) and
ask your dealer to order 11/8” diameter pins. The 11/8” pins
are part #830318. Be sure to indicate if two or four 11/8”
pins are required.
If your loader requires 11/4” diameter pins, please ask
your dealer to order adapter bushings (part #830319). Be
sure to indicate how many adapter bushings are
required.
NOTE: The Ford Model 7109, 7209, 7210 and 7410
Loaders require special mounting brackets instead of the
standard lift channels supplied. Order #830330 for this
application.
Connect the above assembly to the loader arms using
the bottom hole in the channel and attach the upper con-
trol cylinder to the top hole in the lift channels. Center the
main frame (side to side) with your loader arms and
tighten the four (4) 5/8” x 3” U-Bolts.
The lower hole positions in the lift channels can be used
to obtain more angle movement. However, if the frame
becomes too parallel with the loader lift arms, the loader
may not have enough power (mechanical advantage) to
bring the frame back.
NOTE: Generally, it is not recommended to have the tilt
cylinders located any closer than 10-12 inches to the
main loader lift arms. Check the spacing of mounting pins
on your loader bucket and use this as a guide.
The tilt cylinders should be located as far away from the
main loader arms as possible. This provides the most
stable attachment and will minimize movement and
forces placed on the loader by the post driver.
If tilt cylinders are located too close to the loader arms,
they may go “over center” when fully extended. If this
happens, damage may occur to the cylinders and/or
mounting brackets. (This situation should never occur
with the post driver mounted.)
SERVICE INSTRUCTIONS (continued)
FIG. J
MAINTENANCE AND
ADJUSTMENTS (continued)
HYDRAULIC CYLINDER BASE AND
ROD END ADJUSTMENT
Due to the design of the Driver carriage, it is necessary
for both the base and rod end of the hydraulic cylinder to
have a slight amount of freedom. This adjustment should
only be necessary if the hydraulic cylinder is removed for
servicing (see Figure J).
DISASSEMBLY – CARRIAGE AND RAM ASSEMBLY
1. Lay the driving ram assembly face down on the floor
or on a solid workbench.
2. Remove the transport lock pin. This will allow the ram
carriage to move up, thereby relieving the spring ten-
sion. Disconnect the upper spring bracket.
3. Remove the lock nut from the top of the cylinder rod
and push the rod back into the cylinder.
4. Now remove the hex nuts holding the transport lock
pin bracket in place. Slide the carriage down and
remove the hydraulic cylinder and springs as a unit
from the lower end.
5. The carriage can now be removed from the upper end
of the ram assembly.
HYDRAULIC CYLINDER DISASSEMBLY
1. Remove the hydraulic cylinder from the carriage.
2. Place the base end of the hydraulic cylinder in a vise,
support the upper end of the cylinder and unscrew the
aluminum cap. DO NOT remove the cap over the
upper threaded end of the cylinder rod.
3. Pull the rod from the cylinder tube.
4. Remove the nut from the lower end of the cylinder rod.
The rod should be protected with leather, cardboard
or wood blocks and placed in a vise to remove the nut.
Remove the aluminum rod guide. Now slide the cap
down the cylinder rod and remove it from the bottom
(unthreaded) end.
CAP SEAL REPLACEMENT
1. Use a screwdriver or knife to remove the old seal.
Soften the new seal by placing it in warm water or
direct light from a lamp. Squeeze the new seal
together and place one end of it in the seal groove.
Force down on the other end of the seal, and it will
snap into place. Inspect the seal to be sure it is
properly seated (see Figure K).
SPRING REPLACEMENT
1. Lower the driving ram so the springs are in their
relaxed position. Remove the upper spring bracket
from the square tube by removing the 3/8” bolt holding
it in place.
2. Remove the upper spring clip from the spring bracket
by rotating the clip and sliding it out the keyhole slot in
the bracket.
3. Insert a screwdriver in the spring clip and screw it out
of the spring coils. The spring can be removed from
the lower spring clip by rotating the spring.
4. Install new spring clips by
inserting a screwdriver in the
end coil and screwing the clip
onto the first two coils (see
Figure L). Use a large pair of
adjustable (water pump) pliers
and close the ends of the spring
clips to retain them on the
spring.
2. Oil the new seal and slide the cap onto the cylinder
rod from the bottom end. Do not slide the cap on over
the upper threaded end of the rod. This will damage
the seal.
3. Replace the rod guide and retaining nut. Be sure to
protect the rod with leather, cardboard, etc., when
holding the rod in a vise for tightening the nut. DO
NOT hold the rod with a pipe wrench.
4. Insert the rod assembly in the cylinder tube. Place the
base end of the cylinder in a vise and support the
upper end. DO NOT tighten the vise on the cylinder
tube, as this may collapse the tubing. Use a good
grade hydraulic thread sealer and tighten the
aluminum cap.
FIG. K
FIG. L
5. NOTE: It is advisable to install a new rod guide, cylin-
der cap and seal as a unit when rebuilding the cylin-
der. Also inspect the cylinder rod for pits and/or rust
and replace if necessary.

15 20
INSTRUCTIONS (continued)
Connect the above assembly to the loader arms using
the bottom hole in the channel and attach the upper con-
trol cylinder to the top hole in the lift channels. Center the
main frame (side to side) with your loader arms and
tighten the four (4) 5/8” x 3” U-Bolts.
ASSEMBLY (continued)
CAUTION!
To help prevent personal injury, stand clear of frame
and loader. Keep feet away from underside of main
frame.
FOR MANUAL ADJUSTED UNITS –
(HPD-16 MFL and HPD-20 MFL)
1. Attach the forward extension frame to the main frame.
The forward extension frame can be located anywhere
on the main frame as long as it doesn’t interfere with
the loader mounting brackets. It is suggested to locate
the forward extension frame on the left side so that the
post driver will be offset.
2. Raise the loader about four feet off the ground and
install the adjustable legs. The adjustable legs will pro-
vide stability to the driver as they will minimize move-
ment from front tire bounce and looseness in all the
loader pivot joints. The legs will also allow the unit to
be self standing for storage.
Lower the loader down on the legs before proceed-
ing with assembly.
3. Attach the base mounting plate assembly to the for-
ward extension frame using six (6) 1/2” – 13 NC x 11/2”
hex head bolts, nuts and lock washers.
4. Prepare the driving ram for attaching to the manual
base mount. To do this, first lower the driving ram to its
lowest transport position. The driving ram is shipped in
the upper transport position for compactness. To lower
the ram, pull the transport lock pin, allow the ram to
lower (approximately 10 inches) and replace the
transport lock pin. This should be done with the Driver
laying on the shipping pallet. The ram is spring loaded
downward. Stand clear of the ram when the pin is
removed (see Figure A). NOTE: This step of
repositioning the driving ram is necessary in order to
make the mounting bolts at the correct height when
the unit is stood upright for the next step.
5. Attach the driving ram assembly to the manual adjust-
ment base plate assembly. A chain hoist or forklift can
be used to stand the driving ram assembly upright to
its normal working position. Take care not to let the
chain damage the hydraulic cylinder when lifting the
unit. Once the ram assembly is upright, the tractor can
be positioned to align the driving ram assembly to the
manual adjustment base. Align the four (4) 5/8”
diameter bolts already in the driving ram assembly
with the four (4) holes in the base mount channel
assembly and secure with 5/8– 11 NC nuts and lock
washers provided.
6. Install the hydraulic package. Refer to Figure B for cor-
rect location and orientation of components. Use a
good grade hydraulic thread sealant at all pipe thread
connections. (Do NOT use Teflon tape sealer.)
Do NOT use thread sealant on O-ring fittings.
NOTE: Install the O-ring to pipe thread adapters in the
valve ports as shown in Figure B.
FIG. A
FIG. B
RAM CONTROL VALVE
Connect the 3/4” I.D. x 24” long hose from the control
valve work port to the Post Driver hydraulic cylinder
port.
MAINTENANCE AND
ADJUSTMENTS
Make certain the safety and instruction decals are
attached to the Post Driver. If they are lost, damaged, or
painted over, order replacements.
WARNING!
Before servicing the machine, engage the parking
brake or place the transmission in “Park,” shut off the
tractor and remove the key. Relieve all hydraulic
pressure in lines.
HYDRAULIC VALVE
The hydraulic control valve supplied with the Post Driver
is “convertible” to accommodate both open-center and
closed-center tractor hydraulic systems. Most John
Deere and some other late model tractors use closed-
center hydraulic systems. Consult your tractor owner’s
manual (specifications section) or your tractor dealer.
The control valve is shipped “ready” for open-center
hydraulic systems.
NOTE: Failure to make the control valve compatible
with your tractor hydraulic system will cause the
hydraulic oil to overheat.
VALVE CONVERSION INSTRUCTIONS
The conversion plug for making the control valve com-
patible with closed-center hydraulic systems is shipped in
the hardware box (see Figure I).
Remove the large open-center plug and store it in a safe
place. Install the optional closed-center plug from the
hardware box. Be sure the O-ring and seal are on the
plug before insertion. DO NOT use a thread sealant on
the conversion plug.
FIG. I
If the machine is used in heavy duty conditions, the
maintenance operations must be carried out more
frequently.
Thoroughly clean the grease zerks before servicing.
Dirt mixed with lubricant will rapidly wear parts and
destroy bearings. Keep it clean.
Periodically check all bolts to make sure they are tight
(except those that are supposed to be loose).
Check hydraulic hoses. Make sure they are not chafed
or pinched. Replace any damaged hose.
Check hydraulic hoses and fittings for leaks. Repair any
leaks immediately. Never use your hand to check for a
hydraulic leak when system is under pressure.
Replace any worn or damaged parts immediately. Do
not use post driver attachment with any damaged parts.
WARNING!
Always stop the tractor, set brake, shut off engine,
remove key, and lower loader to ground before
attempting to service. Never leave equipment unat-
tended with engine running.
Do not get under machine to make measurements
or adjustments without securely blocking implement
first.
WARNING!
Do not work under a raised loader unless it is
securely blocked or held in position. Do not depend
on the hydraulic system to hold loader and attach-
ment in place.
WARNING!
MAKE SURE THAT ALL OPERATING AND SERVICE
PERSONNEL KNOW THAT IN THE EVENT
HYDRAULIC FLUID PENETRATES THE SKIN, IT
MUST BE SURGICALLY REMOVED WITHIN A FEW
HOURS BY A DOCTOR FAMILIAR WITH THIS FORM
OF INJURY, OR GANGRENE MAY RESULT.
OWNER SERVICE

19 16
8. See further instructions for both manual and hydraulic
type front loader mounts.
3. Prepare the driving ram for attaching to the hydraulic
base mount. To do this, first lower the driving ram to its
lowest transport position. The driving ram is shipped in
the upper transport position for compactness. To lower
the ram, pull the transport lock pin, allow the ram to
lower (approximately 10 inches) and replace the
transport lock pin. This should be done with the Driver
laying on the shipping pallet. The ram is spring loaded
downward. Stand clear of the ram when the pin is
removed (see Figure D). NOTE: This step of
repositioning the driving ram is necessary in order to
make the mounting bolts at the correct height when
the unit is stood upright for the next step.
INSTRUCTIONS (continued)
FIG. D
4. Attach the driving ram assembly to the hydraulic base
mount. A chain hoist or forklift can be used to stand
the driving ram assembly to its normal (vertical) work-
ing position. Take care not to damage the hydraulic
cylinder or carriage when lifting the unit. Once the ram
assembly is upright, remove the six (6) nuts and lock
washers from the mounting bolts.
Align the mounting bolts with the six (6) holes in the
mounting channel and secure with the nuts and lock
washers. The mounting channel on the hydraulic base
mount will probably have to be positioned by hand to
get the mounting channel and carriage lined up.
NOTE: One mounting bolt goes into a blind hole and
does not get a nut and lock washer. Due to trapped air,
it may be necessary to operate the control levers on
the multi-spool valve in order to position the mounting
channel on the hydraulic base unit. Plastic plugs or
hose end caps may have to be removed to allow
trapped air in the hydraulic cylinders to escape. DO
NOT ATTEMPT TO CONNECT THE VALVE TO THE
TRACTOR AND OPERATE IT AT THIS TIME. When
properly mounted, the bottom of the driving ram
should be resting on the same level surface as the
mounting base. This should keep the driving ram
assembly in a vertical position. NOTE: The driving
ram assembly will be somewhat unstable until the
hydraulic cylinders are filled with oil once all plumbing
is completed.
FOR HYDRAULIC ADJUSTED UNITS –
(HPD-16 HFL and HPD-20 HFL)
1. Attach the forward extension frame and base mount
for hydraulically adjusted units to the main frame. It
can also be located anywhere along the main frame
but it is recommended that it be located on the left side
so the post driver will be offset.
The hydraulic extension frame and base mount is
shipped with some of the hydraulic system partially
plumbed and ready to accept the driving ram
assembly. The multi-spool valve and mounting plate is
detached and shrink wrapped in place. Simply remove
the shrink wrapping, swing the mounting plate into
position an install the mounting bolts.
2. Raise the loader about four feet off the ground and
install the adjustable legs. The adjustable legs will pro-
vide stability to the driver as mentioned in the previous
instructions for the manual adjusted unit.
Lower the loader down on the legs before proceed-
ing with assembly.
ASSEMBLY (continued)
7. Attach the circular (bulls-eye) level as shown in the
parts illustration. Adjust the alignment of the level as
follows: using a 2’ or longer carpenter’s level, adjust
the driving ram with the alignment cranks until the ram
is plumb front to back and side to side. Tilt the top of
the driving ram slightly to the rear to allow for recoil
when the ram drops. Now adjust the valve mounting
bracket and the bubble level bracket so the level bub-
ble is centered in the level circle (see Figure C), then
tighten all bolts.
FIG. C
OPERATING INSTRUCTIONS (continued)
Improper use of loaders can result in serious injury or
death to the tractor/loader operator.
For optimum stability, visibility and safety:
• Carry the post driver slowly and low to the ground.
• Operate the loader controls smoothly, avoiding jerky
operation.
• When driving posts on a slope, always have the
driver facing uphill.
• Only use a tractor equipped with a ROPS cab or roll-
over protective structure.
• Use particular care when working on inclines and
hillsides.
• Avoid holes, ditches, and obstructions which may
cause tractor/loader to tip.
• Never allow anyone to walk or work under a raised
loader.
• Be sure that people, livestock, or pets are not stand-
ing near the machine while operating.
DRIVE POSTS SAFELY
OPERATION
Observe all operating and safety instructions in this
manual and those on the Post Driver before using
this machine.
1. Position the tractor for driving a post.
2. On the front loader mounts with adjustable legs,
adjust the legs so that when the driver is at the
desired height, the legs will be on the ground support-
ing the weight of the driver. Always lower loader so
weight of loader and driver is on the legs.
3. Set the tractor brakes or place the transmission in
“PARK.” Raise the ram slightly and remove the trans-
port pin.
4. Align the driving ram vertically by use of the “bulls-
eye” bubble level and the multi-spool hydraulic valve
handles or hand cranks on the manual model.
5. Raise the driving ram by lifting up on the control valve
handle. NOTE: Do not allow the ram to continually
hit the urethane bumpers at the top of the car-
riage. Tractors with high volume hydraulic pumps
will cause the ram to raise very fast. If the ram
raises too fast, turn the up stroke limit screw into the
valve body to limit the amount of handle movement
(see Figure H). Tighten the lock nut to keep the limit
screw in position. Raise the ram so that it is 18” to 24”
above the top of the post. The tractor hydraulic control
valve should be tied in the “ON” position so the Driver
is controlled solely by the Post Driver control valve.
CAUTION!
NEVER hold the post with your hand. Always use
the post holder or the special STEEL T-POST Holder
when driving steel T-posts. Order part #814490.
6. Place the post within the driving ram. The back of the
post should be against the web of the I-Beam and
centered between the flanges. Stabilize the post using
the special “Post Holder Tool” provided.
7. Stand at a 45° angle to the post – not directly in front
of the post. Be sure all bystanders are at a safe dis-
tance from the Post Driver.
8. Drop the driving ram by pushing “Full Down” on the
control valve handle.
9. Repeat raising and dropping the driving ram until the
post is to the desired depth. Be sure the ram slide
blocks are not “BOTTOMING OUT” on the urethane
bumpers. Likewise, do not raise the ram to its
extreme up position with each stroke. The ram should
normally be raised 18” to 24” above the top of the
post. Once the post is deep enough to be stable, it is
no longer necessary to hold the post with the “POST
HOLDER TOOL.” Stand back and “DRIVE” the post.
10. In dry or light rocky conditions, cutting a point on the
post may be beneficial. The point should be centered
on the post to prevent the post veering to one side.
11. When driving steel “T” posts do not raise the ram as
you would for wood posts. Usually, raising the ram 4”
to 6” is enough for steel “T” post. Too much impact on
steel “T” post can cause the post to buckle or bend.
12. Re-engage the transport lock pin when finished with
the job.
FIG. H

OPERATING INSTRUCTIONS
17 18
WARNING!
MAKE SURE THAT ALL OPERATING AND SERVICE
PERSONNEL KNOW THAT IN THE EVENT
HYDRAULIC FLUID PENETRATES THE SKIN, IT
MUST BE SURGICALLY REMOVED WITHIN A FEW
HOURS BY A DOCTOR FAMILIAR WITH THIS FORM
OF INJURY, OR GANGRENE MAY RESULT.
Refer to Figure F and assemble the 3/4” x 3” pipe nip-
ple (ref. #32), the 3/4” pipe tee (ref. #30), and 3/4” to 1/2”
reducer bushing (ref. #29) to the 3/4” outlet port fitting in
the single spool ram control valve. Then connect a 3/8”
I.D. x 36” long hose (ref. #22) from the reducer bush-
ing (ref. #29) to the 1/2” 90° elbow, (ref. #35) that is
connected to the two spool valve.
Connect the 3/8” I.D. x 216” long hose from the inlet
side of the two spool valve to one of the tractor
hydraulic remote outlets.
INSTRUCTIONS FOR BOTH: Connect the 1” I.D. x
216” long return line from the bottom of the 3/4” pipe tee
on the ram control valve return directly to the filler open-
ing on the tractor’s hydraulic system. On many tractors,
the return line can be inserted directly into the filler
opening. The hose should be securely tied in place and
wrapped with a rag or duct tape to prevent contamina-
tion. Special care should be taken to remove the hose
when not in use, to prevent rainwater or dirt entering
the opening. Screw a 3/4” pipe cap on the hose end to
keep it clean. Special filler opening adapter fittings are
available for most popular tractor models. Contact your
supplier for prices and availability.
NOTE: Due to the necessary discharge rate of
hydraulic oil, this line CANNOT be connected to the
tractor remote outlets. To do so will restrict the drop
rate of the driving ram such that it will not properly
drive a post.
NOTE: If the hydraulic oil return hose is too short for
your tractor application, you may increase the length
by ordering hose extension kit #2504141 (4’ ext.).
NOTE: On both models, route the hoses to the tractor
hydraulic remotes so that they will not be pinched or
caught by the movement of the positioning mount or
loader.
Use nylon tie straps to retain the hoses in position.
Be sure to allow a loop of hose between the loader
and the main frame of the post driver mount to allow
for movement.
6. Stand clear of the driving ram assembly and raise the
completely assembled unit approximately 10 inches
with the 3-point of the tractor. Operate the hydraulic
valve on the tractor so that oil flows from the tractor to
the valve and returns by the tractor fill opening hose.
Tie the tractor hydraulic valve handle into operating
position with a tarp strap. The tractor should be
operated at an idle until the system is charged with oil.
Be sure to check the tractor hydraulic oil level after
charging the system.
Now operate the hydraulic levers on the multi-spool
valve. This should cause the driving ram assembly to
pivot, side to side and front to rear. The cylinders will
have to be cycled several times to remove all the air
from the cylinders and lines. Be sure to check the trac-
tor hydraulic oil level after charging the system.
Special orifice fittings have been installed at the
hydraulic cylinder ports to restrict the flow and cause
the cylinders to operate in a slow, smooth manner.
7. Attach the circular (bulls-eye) level as shown in the
parts illustration. Adjust the alignment of the level as
follows: using a 2’ or longer carpenter’s level, adjust
the driving ram with the alignment cranks until the ram
is plumb front to back and side to side. Tilt the top of
the driving ram slightly to the rear to allow for recoil
when the ram drops. Now adjust the valve mounting
bracket and the bubble level bracket so the level bub-
ble is centered in the level circle (see Figure G), then
tighten all bolts.
FRONT LOADER HYDRAULIC MOUNT ASSEMBLY:
Connect a 3/8” I.D. x 36” long hose (see Figure F, ref. #22)
from the inlet side of the ram control valve to the 90°
street elbow in the 2 spool valve (see Figure F, ref. #33).
INSTRUCTIONS (continued)
LUBRICATION
The Post Driver is designed with “SPECIAL” polyethylene
slide blocks for long, trouble-free operation.
• Oil or grease applied to the slide channel will make
the operation smoother and if applied after use will
help keep rust from forming in the channel.
• There are grease fittings on the large side to side pivot
tube and on all the manual threaded tilt adjustment
nuts. A few shots of grease at the beginning of the
work day is recommended.
• It is recommended to apply grease or oil to the
threaded portion of the tilt adjustment cranks before
storage to help prevent rust from forming.
• Smear grease over the exposed portion of the plated
hydraulic cylinder rod after use to help prevent pitting
and rust from forming. If Post Driver is going to be
stored outside this is very important.
• The hydraulic control base has a grease fitting on the
large, side to side, pivot tube and one on the lower,
front to rear, pivot pin.
BEFORE YOU START
Review the assembly instructions to be sure the Driver
is properly assembled and plumbed correctly for your
tractor hydraulic system. The control valve return hose
must be connected directly to the tractor hydraulic oil fill
opening – NOT to the tractor remote outlets. (See
Assembly Instruction, item #5.) Refer to the Hydraulic
Valve Section (pages 15-17) for open-center and closed-
center tractor hydraulic system requirements. Be sure
the tractor hydraulic oil and filter have been serviced
according to the tractor manufacturer’s recommenda-
tions before using the Post Driver.
FIG. F
ASSEMBLY (continued) ASSEMBLY (continued)
PRE-OPERATION CHECKLIST
(OWNER/OPERATOR RESPONSIBILITY)
____ Review and follow safety rules and safety signs on
pages 3 through 12.
____ Check that Post Driver is properly and securely
attached to tractor loader.
____ Lubricate all grease fitting locations.
____ Check that all hardware is properly installed.
____ Check that no one enters the area of machine
operation. Always keep bystanders at a safe dis-
tance from the post driver.
____ Know your controls and how to stop tractor, engine
and PTO quickly in an emergency. READ THIS
MANUAL AND THE ONE PROVIDED WITH YOUR
TRACTOR AND LOADER.
____ To avoid accident or injury, do not allow anyone to
operate this equipment without proper instructions.
Any person who operates this equipment must be
instructed in and be capable of the safe operation
of the tractor, implement and all controls.
DANGER!
Beware of low electrical wires when loader is
raised. Serious injury or death can result if contact is
made.
FIG. E
RAM CONTROL VALVE
Connect the 3/4” I.D. x 24” long hose from the control
valve work port to the Post Driver hydraulic cylinder
port.
5. Install the hydraulic package. Refer to Figure E for cor-
rect location and orientation of components. Use a
good grade hydraulic thread sealant at all pipe thread
connections. (Do NOT use Teflon tape sealer.)
Do NOT use thread sealant on O-ring fittings.
NOTE: Install the O-ring to pipe thread adapters in the
valve ports as shown in Figure E.
FIG. G

OPERATING INSTRUCTIONS
17 18
WARNING!
MAKE SURE THAT ALL OPERATING AND SERVICE
PERSONNEL KNOW THAT IN THE EVENT
HYDRAULIC FLUID PENETRATES THE SKIN, IT
MUST BE SURGICALLY REMOVED WITHIN A FEW
HOURS BY A DOCTOR FAMILIAR WITH THIS FORM
OF INJURY, OR GANGRENE MAY RESULT.
Refer to Figure F and assemble the 3/4” x 3” pipe nip-
ple (ref. #32), the 3/4” pipe tee (ref. #30), and 3/4” to 1/2”
reducer bushing (ref. #29) to the 3/4” outlet port fitting in
the single spool ram control valve. Then connect a 3/8”
I.D. x 36” long hose (ref. #22) from the reducer bush-
ing (ref. #29) to the 1/2” 90° elbow, (ref. #35) that is
connected to the two spool valve.
Connect the 3/8” I.D. x 216” long hose from the inlet
side of the two spool valve to one of the tractor
hydraulic remote outlets.
INSTRUCTIONS FOR BOTH: Connect the 1” I.D. x
216” long return line from the bottom of the 3/4” pipe tee
on the ram control valve return directly to the filler open-
ing on the tractor’s hydraulic system. On many tractors,
the return line can be inserted directly into the filler
opening. The hose should be securely tied in place and
wrapped with a rag or duct tape to prevent contamina-
tion. Special care should be taken to remove the hose
when not in use, to prevent rainwater or dirt entering
the opening. Screw a 3/4” pipe cap on the hose end to
keep it clean. Special filler opening adapter fittings are
available for most popular tractor models. Contact your
supplier for prices and availability.
NOTE: Due to the necessary discharge rate of
hydraulic oil, this line CANNOT be connected to the
tractor remote outlets. To do so will restrict the drop
rate of the driving ram such that it will not properly
drive a post.
NOTE: If the hydraulic oil return hose is too short for
your tractor application, you may increase the length
by ordering hose extension kit #2504141 (4’ ext.).
NOTE: On both models, route the hoses to the tractor
hydraulic remotes so that they will not be pinched or
caught by the movement of the positioning mount or
loader.
Use nylon tie straps to retain the hoses in position.
Be sure to allow a loop of hose between the loader
and the main frame of the post driver mount to allow
for movement.
6. Stand clear of the driving ram assembly and raise the
completely assembled unit approximately 10 inches
with the 3-point of the tractor. Operate the hydraulic
valve on the tractor so that oil flows from the tractor to
the valve and returns by the tractor fill opening hose.
Tie the tractor hydraulic valve handle into operating
position with a tarp strap. The tractor should be
operated at an idle until the system is charged with oil.
Be sure to check the tractor hydraulic oil level after
charging the system.
Now operate the hydraulic levers on the multi-spool
valve. This should cause the driving ram assembly to
pivot, side to side and front to rear. The cylinders will
have to be cycled several times to remove all the air
from the cylinders and lines. Be sure to check the trac-
tor hydraulic oil level after charging the system.
Special orifice fittings have been installed at the
hydraulic cylinder ports to restrict the flow and cause
the cylinders to operate in a slow, smooth manner.
7. Attach the circular (bulls-eye) level as shown in the
parts illustration. Adjust the alignment of the level as
follows: using a 2’ or longer carpenter’s level, adjust
the driving ram with the alignment cranks until the ram
is plumb front to back and side to side. Tilt the top of
the driving ram slightly to the rear to allow for recoil
when the ram drops. Now adjust the valve mounting
bracket and the bubble level bracket so the level bub-
ble is centered in the level circle (see Figure G), then
tighten all bolts.
FRONT LOADER HYDRAULIC MOUNT ASSEMBLY:
Connect a 3/8” I.D. x 36” long hose (see Figure F, ref. #22)
from the inlet side of the ram control valve to the 90°
street elbow in the 2 spool valve (see Figure F, ref. #33).
INSTRUCTIONS (continued)
LUBRICATION
The Post Driver is designed with “SPECIAL” polyethylene
slide blocks for long, trouble-free operation.
• Oil or grease applied to the slide channel will make
the operation smoother and if applied after use will
help keep rust from forming in the channel.
• There are grease fittings on the large side to side pivot
tube and on all the manual threaded tilt adjustment
nuts. A few shots of grease at the beginning of the
work day is recommended.
• It is recommended to apply grease or oil to the
threaded portion of the tilt adjustment cranks before
storage to help prevent rust from forming.
• Smear grease over the exposed portion of the plated
hydraulic cylinder rod after use to help prevent pitting
and rust from forming. If Post Driver is going to be
stored outside this is very important.
• The hydraulic control base has a grease fitting on the
large, side to side, pivot tube and one on the lower,
front to rear, pivot pin.
BEFORE YOU START
Review the assembly instructions to be sure the Driver
is properly assembled and plumbed correctly for your
tractor hydraulic system. The control valve return hose
must be connected directly to the tractor hydraulic oil fill
opening – NOT to the tractor remote outlets. (See
Assembly Instruction, item #5.) Refer to the Hydraulic
Valve Section (pages 15-17) for open-center and closed-
center tractor hydraulic system requirements. Be sure
the tractor hydraulic oil and filter have been serviced
according to the tractor manufacturer’s recommenda-
tions before using the Post Driver.
FIG. F
ASSEMBLY (continued) ASSEMBLY (continued)
PRE-OPERATION CHECKLIST
(OWNER/OPERATOR RESPONSIBILITY)
____ Review and follow safety rules and safety signs on
pages 3 through 12.
____ Check that Post Driver is properly and securely
attached to tractor loader.
____ Lubricate all grease fitting locations.
____ Check that all hardware is properly installed.
____ Check that no one enters the area of machine
operation. Always keep bystanders at a safe dis-
tance from the post driver.
____ Know your controls and how to stop tractor, engine
and PTO quickly in an emergency. READ THIS
MANUAL AND THE ONE PROVIDED WITH YOUR
TRACTOR AND LOADER.
____ To avoid accident or injury, do not allow anyone to
operate this equipment without proper instructions.
Any person who operates this equipment must be
instructed in and be capable of the safe operation
of the tractor, implement and all controls.
DANGER!
Beware of low electrical wires when loader is
raised. Serious injury or death can result if contact is
made.
FIG. E
RAM CONTROL VALVE
Connect the 3/4” I.D. x 24” long hose from the control
valve work port to the Post Driver hydraulic cylinder
port.
5. Install the hydraulic package. Refer to Figure E for cor-
rect location and orientation of components. Use a
good grade hydraulic thread sealant at all pipe thread
connections. (Do NOT use Teflon tape sealer.)
Do NOT use thread sealant on O-ring fittings.
NOTE: Install the O-ring to pipe thread adapters in the
valve ports as shown in Figure E.
FIG. G

19 16
8. See further instructions for both manual and hydraulic
type front loader mounts.
3. Prepare the driving ram for attaching to the hydraulic
base mount. To do this, first lower the driving ram to its
lowest transport position. The driving ram is shipped in
the upper transport position for compactness. To lower
the ram, pull the transport lock pin, allow the ram to
lower (approximately 10 inches) and replace the
transport lock pin. This should be done with the Driver
laying on the shipping pallet. The ram is spring loaded
downward. Stand clear of the ram when the pin is
removed (see Figure D). NOTE: This step of
repositioning the driving ram is necessary in order to
make the mounting bolts at the correct height when
the unit is stood upright for the next step.
INSTRUCTIONS (continued)
FIG. D
4. Attach the driving ram assembly to the hydraulic base
mount. A chain hoist or forklift can be used to stand
the driving ram assembly to its normal (vertical) work-
ing position. Take care not to damage the hydraulic
cylinder or carriage when lifting the unit. Once the ram
assembly is upright, remove the six (6) nuts and lock
washers from the mounting bolts.
Align the mounting bolts with the six (6) holes in the
mounting channel and secure with the nuts and lock
washers. The mounting channel on the hydraulic base
mount will probably have to be positioned by hand to
get the mounting channel and carriage lined up.
NOTE: One mounting bolt goes into a blind hole and
does not get a nut and lock washer. Due to trapped air,
it may be necessary to operate the control levers on
the multi-spool valve in order to position the mounting
channel on the hydraulic base unit. Plastic plugs or
hose end caps may have to be removed to allow
trapped air in the hydraulic cylinders to escape. DO
NOT ATTEMPT TO CONNECT THE VALVE TO THE
TRACTOR AND OPERATE IT AT THIS TIME. When
properly mounted, the bottom of the driving ram
should be resting on the same level surface as the
mounting base. This should keep the driving ram
assembly in a vertical position. NOTE: The driving
ram assembly will be somewhat unstable until the
hydraulic cylinders are filled with oil once all plumbing
is completed.
FOR HYDRAULIC ADJUSTED UNITS –
(HPD-16 HFL and HPD-20 HFL)
1. Attach the forward extension frame and base mount
for hydraulically adjusted units to the main frame. It
can also be located anywhere along the main frame
but it is recommended that it be located on the left side
so the post driver will be offset.
The hydraulic extension frame and base mount is
shipped with some of the hydraulic system partially
plumbed and ready to accept the driving ram
assembly. The multi-spool valve and mounting plate is
detached and shrink wrapped in place. Simply remove
the shrink wrapping, swing the mounting plate into
position an install the mounting bolts.
2. Raise the loader about four feet off the ground and
install the adjustable legs. The adjustable legs will pro-
vide stability to the driver as mentioned in the previous
instructions for the manual adjusted unit.
Lower the loader down on the legs before proceed-
ing with assembly.
ASSEMBLY (continued)
7. Attach the circular (bulls-eye) level as shown in the
parts illustration. Adjust the alignment of the level as
follows: using a 2’ or longer carpenter’s level, adjust
the driving ram with the alignment cranks until the ram
is plumb front to back and side to side. Tilt the top of
the driving ram slightly to the rear to allow for recoil
when the ram drops. Now adjust the valve mounting
bracket and the bubble level bracket so the level bub-
ble is centered in the level circle (see Figure C), then
tighten all bolts.
FIG. C
OPERATING INSTRUCTIONS (continued)
Improper use of loaders can result in serious injury or
death to the tractor/loader operator.
For optimum stability, visibility and safety:
• Carry the post driver slowly and low to the ground.
• Operate the loader controls smoothly, avoiding jerky
operation.
• When driving posts on a slope, always have the
driver facing uphill.
• Only use a tractor equipped with a ROPS cab or roll-
over protective structure.
• Use particular care when working on inclines and
hillsides.
• Avoid holes, ditches, and obstructions which may
cause tractor/loader to tip.
• Never allow anyone to walk or work under a raised
loader.
• Be sure that people, livestock, or pets are not stand-
ing near the machine while operating.
DRIVE POSTS SAFELY
OPERATION
Observe all operating and safety instructions in this
manual and those on the Post Driver before using
this machine.
1. Position the tractor for driving a post.
2. On the front loader mounts with adjustable legs,
adjust the legs so that when the driver is at the
desired height, the legs will be on the ground support-
ing the weight of the driver. Always lower loader so
weight of loader and driver is on the legs.
3. Set the tractor brakes or place the transmission in
“PARK.” Raise the ram slightly and remove the trans-
port pin.
4. Align the driving ram vertically by use of the “bulls-
eye” bubble level and the multi-spool hydraulic valve
handles or hand cranks on the manual model.
5. Raise the driving ram by lifting up on the control valve
handle. NOTE: Do not allow the ram to continually
hit the urethane bumpers at the top of the car-
riage. Tractors with high volume hydraulic pumps
will cause the ram to raise very fast. If the ram
raises too fast, turn the up stroke limit screw into the
valve body to limit the amount of handle movement
(see Figure H). Tighten the lock nut to keep the limit
screw in position. Raise the ram so that it is 18” to 24”
above the top of the post. The tractor hydraulic control
valve should be tied in the “ON” position so the Driver
is controlled solely by the Post Driver control valve.
CAUTION!
NEVER hold the post with your hand. Always use
the post holder or the special STEEL T-POST Holder
when driving steel T-posts. Order part #814490.
6. Place the post within the driving ram. The back of the
post should be against the web of the I-Beam and
centered between the flanges. Stabilize the post using
the special “Post Holder Tool” provided.
7. Stand at a 45° angle to the post – not directly in front
of the post. Be sure all bystanders are at a safe dis-
tance from the Post Driver.
8. Drop the driving ram by pushing “Full Down” on the
control valve handle.
9. Repeat raising and dropping the driving ram until the
post is to the desired depth. Be sure the ram slide
blocks are not “BOTTOMING OUT” on the urethane
bumpers. Likewise, do not raise the ram to its
extreme up position with each stroke. The ram should
normally be raised 18” to 24” above the top of the
post. Once the post is deep enough to be stable, it is
no longer necessary to hold the post with the “POST
HOLDER TOOL.” Stand back and “DRIVE” the post.
10. In dry or light rocky conditions, cutting a point on the
post may be beneficial. The point should be centered
on the post to prevent the post veering to one side.
11. When driving steel “T” posts do not raise the ram as
you would for wood posts. Usually, raising the ram 4”
to 6” is enough for steel “T” post. Too much impact on
steel “T” post can cause the post to buckle or bend.
12. Re-engage the transport lock pin when finished with
the job.
FIG. H