Frontier DH5410C User manual

Introduction
READ THIS MANUAL carefully to learn how to operate and service your achine correctly. Failure
to do so could result in personal injury or equip ent da age. This anual and safety signs on
your achine ay be ordered fro your John Deere dealer.
THIS MANUAL SHOULD BE CONSIDERED a per anent part of your achine and should re ain
with the achine when you sell it.
MEASUREMENTS in this anual are given in custo ary U.S. units. Only use the correct
replace ent parts and fasteners.
RIGHT-HAND AND LEFT-HAND sides are deter ined by facing in the direction the i ple ent will
travel when going forward.
WRITE DOWN PRODUCT IDENTIFICATION NUMBERS. Accurately record all the nu bers to
help in tracing the achine should it be stolen. Your John Deere dealer also needs these nu bers
when you order parts. File the identification nu bers in a secure place away fro the achine.
WARRANTY coverage is provided by John Deere according to the ter s of the Construction, Utility,
and Forestry Products Standard Warranty State ent. Carefully read the warranty state ent on the
back of your original purchase order for details on coverage and li itations of this warranty.
This warranty provides you the assurance that Frontier will back its products where defects appear
within the warranty period. In so e circu stances, Frontier also provides field i prove ents, often
without charge to the custo er, even if the product is out of warranty. Should the equip ent be
abused or odified to change its perfor ance beyond the original factory specifications, or if the
equip ent is used for a purpose other than that which it was designed for, the warranty will beco e
void and field i prove ents ay be denied.
THE TIRE MANUFACTURERS warranty is separate and apart fro the equip ent warranty and
ay not apply outside the U.S.
2

Contents
Product General Arrangement and Identification 5
General Information 6
Checklists 7
Predelivery Checklist 7
Delivery Checklist 7
After-Sale Checklist
Each Day of Operation Checklist
Before Each Season Checklist
Safety Decal Identification and Placement 9
Safety First Guidelines 10
Attaching the Disk to the Tractor 11
Transporting the Disk 12
Adjusting the Transport Levelling Control Arm 12
Transport Safety 13
Operating Safety 14
Operating the Disk 15
General Operating Guidelines 15
Reposition the Hitch 15
Change the Gang Angles 16
Adjust the Levelling Control Arm 17
Service and Maintenance Safety 1
Lubricate the Disk 19
Check the Oil-Bath Bearings 20
Adjusting the Scrapers 21
Repack and Pre-Load Wheel Hub Bearings 21
Fluid and Fastener Specifications 22
Disc Gang Assembly Axles 22
Fastener Torque Values 22
Oil-Bath Bearing Oil 22
Tire and Wheel Service 22
Keep Gang Assemblies Tight 23
Assembly Safety 24
Assemble the Disk 24
Disk Gang Assembly Procedure 32
Detailed Parts Diagrams 33
Hitch and Side Arm Assembly 34
Bridle and Control Arm Assembly 35
Main Frame and Transport Assembly 36
Gang Bars and Scrapers 37
Gang Assembly – Model DH54xxC 3
Gang Assembly – Model DH55xxC 39
Gang Assembly – Model DH56xxC 40
3

Oil-Bath Bearing Assembly (Model – DH54xxC) 41
Oil-Bath Bearing Assembly (Model – DH55xxC) 41
Oil-Bath Bearing Assembly (Model – DH5 xxC) 42
20” Hydraulic Cylinder 43
10 Bolt Hub Assembly 44
Tire and Wheel Assembly 45
Light Kit 4
Decals, Reflectors and Logos 47
Specifications 48
Storage 49
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PRODUCT GENERAL ARRANGEMENT AND IDENTIFICATION
1. Hitc Tongue
2. Safety C ain
3. Hitc
4. Side Arm
5. Jack
6. Hose Holder & Manual Cannister
7. Bridle
8. Transport Stay (Storage Location)
9. Top Transport Control Arm
10. Leveling Control Arm
11. Bottom Transport Control Arm
12. Hydraulic Cylinder
13. 10-Bolt Hub
14. W eel and Tire Assembly
15. Transport Assembly
16. Main Frame
17. Front Gang Bar c/w Scraper Bar
18. Rear Gang Bar c/w Scraper Bar
19. Disc Gang
20. Gang Wrenc es
5

General Information
TO THE DEALER
Assembly and delivery of this product is the responsibility of the John Deere dealer. Read manual
instructions and safety rules. Make sure all items on the Dealers Pre-Delivery and Delivery
Checklists in the Operators Manual are completed before releasin the equipment to the owner.
TO THE OWNER
Read this manual before operatin your Frontier equipment. The information presented will prepare
you to do a better job. Keep this manual handy for ready reference. Require all operators read this
manual carefully and become acquainted with all the adjustment and operatin procedures before
usin the equipment. Replacement manuals can be obtained from your sellin dealer.
The equipment you have purchased has been carefully en ineered and manufactured to provide
dependable and satisfactory use. Like all mechanical products, it requires cleanin and upkeep.
Lubricate the unit as specified. Many of the features of this equipment necessary for it to perform
its intended task are inherently dan erous, so please observe all safety information in this manual
and safety decals on the equipment.
For service, your authorized John Deere dealer has trained mechanics, enuine ori inal
manufacturer service parts and the necessary tools and equipment to handle your needs.
Use only enuine ori inal manufacturer service parts. Substitute parts will void the warranty and
may not meet standards required for safe and satisfactory operation. Record the model number
and serial number of your equipment in the spaces provided.
Date of Purchase _______________________
Model _________________________________
erial Number (13 Characters) ___________________________________
Provide this information to your dealer to make a warranty claim or obtain correct repair parts.
6

Checklists
PREDELIVERY CHECKLIST: After the disk has been completely assembled and lubricated, inspect it before
delivery to the customer to ensure proper operation. Check off each item of inspection in the list as it is found
satisfactory.
□ The disk has been assembled according to instructions and all nuts and bolts are present and tight.
□ All grease fittings are installed and the disk has been lubricated.
□ Tires are properly inflated and wheel lug nuts are present and properly torqued.
□ Disk gangs rotate freely without dragging on scrapers.
□ Check all pins to make sure retaining hardware is in place.
□ Touch up paint damage due to shipping and assembly.
□ Connect disk to tractor drawbar, connect hydraulic hoses and check the hydraulic system for leaks and
proper operation of the hydraulic cylinder.
□ Safety chain is attached. SMV sign is installed and visible from the rear of disk.
□ Light Kit is installed and operating correctly. All safety decals are present and legible.
□ This disk has been checked and to the best of my knowledge, is ready for delivery to the customer.
Set-Up Date _________________ Signature f Assembly Pers n _________________________________
DELIVERY CHECKLIST: The following list is a reminder of important information that should be conveyed
directly to the customer upon delivery of the disk. Check off each item as it is fully explained.
□ Advise customer the life expectancy and performance of this, like any other machine, is dependent on
regular lubrication and maintenance as described in this manual.
□ Explain the importance of safe and proper operation of the machine. Point out decals warning the operator
of the dangers of unsafe operation procedures and conditions.
□ The customer has been told to keep all bolts tight.
□ When the disk is transported on road or highway at night or during the day, accessory lights and devices
should be used for adequate warning to operators of other vehicles. Replacement safety lights and safety
devices are available from your John Deere dealer. In this regard, suggest customers check their local
governmental regulations.
□ Insure completion of the Delivery and Warranty Registration forms, listing the Serial Number of the
machine.
□ Explain the Warranty
□ Show the customer how to hitch the machine and operate the controls relating to the machine.
□ Explain the adjustments for proper operation of the disk.
□ Advise use of the safety chain.
□ Give the Operators Manual to the customer and explain all operating adjustments and lubrication fully.
□ To the best of my knowledge, this machine has been delivered ready for use and the customer has been
fully informed as to its proper care and operation.
Set-Up Date _________________ Signature f Delivery Pers n __________________________________
7

Checklists
AFTER-SALE CHECKLIST: It is suggested the following items be checked sometime during the first six
months operation of the disk.
□ Check the entire disk for loose or missing hardware.
□ Check for broken or damaged parts. Make necessary repairs.
□ Re-torque the hardware with special attention to the gang axle nuts and locks.
□ afety chain is properly installed and undamaged.
□ If possible, run the disk to insure it is functioning properly.
□ Check the bearing wear plates are present and not excessively worn.
□ Visually check the oil-bath bearing for leaks. If parked unused for a long period in extreme weather
conditions, there may be seepage due to expansion and contraction of the metal duo-cone seals. This
condition will correct itself when the disk is operated. Lost oil should be replaced before operation.
□ Review the entire Operators Manual with the customer and stress the importance of proper and regular
lubrication and safety precautions.
□ Advise the customer of optional attachments that are available.
Date Checked_________________________ Signature_____________________________________________________
EACH DAY F PERATI N CHECKLIST
□ Lubricate items required daily and those whose lubrication time is due.
□ Look for loose or missing bolts and parts.
□ Check hydraulic system for leaks and abraded hoses.
□ Check tire pressures and wheel lug nuts.
□ Check all pins have retaining hardware in place.
□ Check all oil-bath bearing assemblies for leaks. Check bearing wear plates are present.
□ Be sure all gang components are tight on the axles and axle nuts are tight and axle locks are present.
BEF RE EACH SEAS N CHECKLIST
□ Be sure recommended lubrication is performed.
□ Inspect all oil-bath bearing assemblies are tight and dry and if wear plates need replacement.
□ Check hydraulic system for proper operation and leakage.
□ Check tire pressures and wheel lug nuts. Check for end play in wheel bearings and repack if necessary.
□ Be sure proper operating adjustments have been made for your conditions.
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REF NO PART NUMBER DESCRIPTION NO REQ'D
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5KBLG2FT
5KBRFLYW
5KBDCASI
5KBDDDNA
5KBDWMTS
5KBDWPPH
5KBDWICL
-s your d al r
FRONTIER D cal
Mod l Numb r D cal
Y llow R fl ctor Strip
WARNING - Avoid s rious injury from inj ction of pr ssuriz d.....
CAUTION - To Avoid S rious Injury:
DANGER - To avoid injury or d ath, do not adjust.....
WARNING - Do not xc d impl m nts maximum transport sp d.....
WARNING - Pinch Point Hazard
WARNING - Avoid s rious injury from crushing or pinning.....
S rial Numb r Plat
2
2
4
1
1
1
1
1
1
1
Saf ty D cal Id ntification and Plac m nt
5KBDWPHF
-s parts s ction
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10.

Safety First Guidelines
Carefully read all safety messages in this manual and on your machine safety signs. Keep safety
signs in good condition. Replace missing or damaged safety signs. Be sure new equipment
components and repair parts include the current safety signs. Replacement safety signs are
available from your John Deere dealer.
Learn how to operate the machine and how to use the controls properly. Do not let anyone operate
the machine without instruction. Keep your machine in proper wor ing condition. Unauthorized
modifications to the machine may impair the function and/or safety and affect machine life.
If you do not understand any part of this manual and need assistance, contact your John Deere
dealer.
Prepare for Emergencies: Keep a first aid it and a fire extinguisher handy. Keep emergency
numbers for doctors, ambulance service, hospital and fire department nearby.
Wear Protective Clothing: Wear close fitting clothing and safety equipment appropriate to the job.
Operating equipment safely requires the full attention of the operator. Do not wear headphones or
use a cell phone while operating the machine.
Protect Against Noise: Prolonged exposure to loud noise can cause hearing impairment or loss.
Wear suitable hearing protection to prevent damage to your hearing.
Store Equipment Safely: Securely store equipment by either lowering to ground or choc ing
wheels to prevent movement. Do not allow children or others to play on or around equipment.
ispose of Waste Properly: Improperly disposing of waste can threaten the environment and the
ecology. Potentially harmful waste used in this equipment includes gear oil in the oil-bath bearings
and fluid in the hydraulic system. Use lea proof containers when draining fluids. Do not use food
or beverage containers that may mislead someone into drin ing from them. Do not pour waste onto
the ground, down a drain or into any water source. Obtain information about the proper way to
recycle or dispose of waste from your local environmental or recycling center, or from your John
Deere dealer.
10
When you see this symbol on your machine or
in this manual, be alert to the potential for
personal injury.
Indicates death or serious injury will result if
proper precautions are not ta en.
Indicates death, serious injury or property
damage can result if proper precautions are not
ta en.
Indicates some injury or property damage may
result if proper precautions are not ta en.

Attaching the Disk to the Tractor
The disk is equipped with a heavy tongue that both
flexes and swivels to accommodate the most rugged
terrain including large rocks and tree stumps. This is
an essential design feature; however it requires extra
care when attaching the disk to a tractor.
For best results, the tractor used to pull this unit should
be equipped with a swinging drawbar with a clevis end.
The following procedure is recommended.
This procedure is best carried out with the disk
in the raised position and the transport lock
installed over the hydraulic cylinder. Use the
hitch ack to raise or lower the tongue to the
level where the tongue will lay on the drawbar.
Unpin the swinging drawbar and slide it to one
side. Back the tractor to the approximate
point where swinging the drawbar back to the
center will trap the tongue in the clevis. With
the tractor parked and the brake engaged, lift
the tongue (2) and swing the drawbar into the
center position (1).
Install the drawbar pin and its retaining
hardware. This may require moving the tractor
forward or backward slightly. An articulated
tractor or belted tractor can swing the drawbar
side to side by turning the steering wheel
slightly. This procedure may take more than
one attempt – safety takes time.
Attach the safety chain.
If the tractor is not equipped with a swinging
drawbar, it is recommended to fabricate a prop
from a length of wood to hold up the tongue
while the tractor is backed into place.
CAUTION:
Do not allow others to stand between the tractor and disk when moving the
tractor.
Do not allow someone to hold up the tongue while backing the tractor into
place.
Prevent serious in ury or death to you or others caused by unexpected
movement of the machine. Engage the parking brake and/or place
transmission in PARK, shut off engine and remove key before working
around hitch.
11

Transporting the Disk
□ Clean both quick disconnects and tractor couplers before connecting. Shut
off the tractor engine and move the hydraulic levers back and forth to
relieve pressure in the hydraulic system. Connect the hydraulics hoses to
the tractor hydraulic couplers. For ease of use it is recommended the
hoses be attached in the order which lowers the disk when the hydraulic
lever is pushed forward and raises it when the lever is pulled back.
CAU ION: Escaping fluid under pressure can penetrate the skin causing serious injury. Avoid
this hazard by relieving the pressure before disconnecting hydraulic or other lines. ighten all
the connections before applying pressure. Search for leaks with a piece of cardboard. Protect
hands and body from high pressure fluids.
If an accident occurs, see a doctor immediately. Any fluid injected into the skin must be surgically
removed within a few hours or gangrene may result.
□ urn jack handle to take weight off hitch jack. Unpin jack, remove pin, swing jack up into
transport (i.e. horizontal) position and re-pin.
□ If the tractor is equipped with a swinging drawbar. Make sure the drawbar is locked in the center
position.
□ Connect warning lights to the tractor outlet and make sure they are functioning properly. Make
sure the SMV sign is installed and visible from the rear of the machine.
□ Check tire pressure and adjust if necessary.
Adjusting the Transport Levelling Control Arm
With the disk attached to the tractor, the hydraulics
connected and with the transport stay removed from
the hydraulic cylinder; the machine can be adjusted to
transport level as in illustration A. he adjustment is
carried out by turning the nut indicated in the
illustration. When the disk is raised out of the ground
in the transport position, there is a significant amount
of pressure against this nut. herefore, to make the
adjustment easier, lower the disk to the ground to take
the pressure off the nut. he nut can then be turned
easily by hand or with a large adjustable wrench. o
tilt the disk forward as in illustration B, turn in the
direction indicated as B. o tilt the disk back as in
illustration C, turn in the direction indicated as C. It may be necessary to raise and lower the disk a
number of times to attain the desired result. Once the disk is level, lock the nut in position with the
second nut on the eyebolt shaft. his adjustment remains unchanged as long as there is no change
in the hitch height of the tractor.
WARNING: o avoid serious injury to self or to others, do not allow anybody on or near the
disk when it is being raised or lowered. In particular, if someone other than the tractor operator is
making adjustments to the disk, the tractor should be switched off while the adjustments are being
made and only restarted when that person is well clear of the disk.
12

Transporting the Disk
□ Raise the disk to its maximum height by completely
extending the hydraulic cylinder. Install the transport
stay over the hydraulic cylinder rod with the plated
end against the head gland of the cylinder. Install the
pins provided. Switch the tractor off and move the
hydraulic lever back and forth, releasing the pressure
in the system and allowing the weight of the disc to
be taken up by the transport stay.
Transport Safety
□ Never allow riders on the tractor or disk. Serious in ury or death can result from falling in the path
of the disk while in operation or transport.
□ Observe laws and regulations while transporting disk. Never transport disk at speeds greater
than 20 mph (32 km/h). Reduce speed and exercise caution on turns, bridges, rough roads,
steep grades and other adverse conditions.
□ Install all locking devices before transporting disk. Without these devices installed, the disk could
fall during transport and cause in ury or death to the operator or bystanders and/or damage to the
disk, tractor and property.
□ Always used safety chains to secure the disk to the tractor during transport. Provide only enough
slack in chain to permit turning. A safety chain will help control drawn equipment should it
accidentally separate from the drawbar.
□ Ensure the load does not exceed the recommended specifications of the tractor. The tractor must
be heavy and powerful enough with adequate braking power for the towed load.
□ Keep the SMV emblem and side and rear reflectors clean and visible.
□ Use headlights, flashing warning lights and turn signals day and night. Follow local regulations for
equipment lighting and marking. Keep lighting and marking visible and in good working order.
Replace or repair lighting or marking that has been damaged or lost.
□ Use the proper size and grade of pin to attach the disk to the tractor.
□ If the tractor is equipped with a swinging drawbar, be sure to pin it in the center position before
transporting the disk.
□ Check wheel lug nuts for tightness and ensure tires are properly inflated and free of damaging
cuts and abrasions. The failure of either of these components can cause the disk to swing
uncontrollably and make it difficult to control the tractor.
□ Remove debris and loose soil from the disk before traveling on public roads. Falling debris and
soil can be a hazard to following and approaching traffic.
□ Do not tow another implement behind the disk unless proper modifications have been made and it
is permitted by local ordinances.
13

Operating Safety
□ Become familiar with the disk and its operation before using the unit. Read this manual carefully
and contact your dealer if you have any questions.
□ Never allow riders on the tractor or disk. Serious injury or death could result from falling in the
path of the disk while in operation or transport.
□ Be sure bystanders are clear of the disk before raising or lowering the disk. ccidental movement
of the controls or hydraulic failure could cause the disk to suddenly fall.
□ Be sure bystanders are clear of the disk before operating the disk. Before entering the tractor,
walk around the disk making sure no one is on, under or in front of the disk. Moving the disk
while someone is between or in front of the gang assemblies could result in serious injuries or
death.
□ Never work under a raised disk. lways lower the disk to the ground before inspecting or
servicing. Never rely on the hydraulic system to hold up the disk.
□ Use extreme caution when working around disk blades. The blades are sharp and could cut
hands, legs, etc. Wear gloves to handle disk blades or gang assemblies.
□ Do not operate close to ditches, deep bodies of water or on excessively steep slopes.
□ Before dismounting from the tractor to service or make adjustments, always
1. Lower the disk to the ground.
2. Shut the tractor off.
3. Engage the tractor’s parking brake or place transmission in park.
4. Relieve the hydraulics by moving the control back and forth.
5. Remove the key.
Unanticipated movement of the disk while working around the disk gangs could result in serious
personal injury or death.
14

Operating the Disk
General Operating Guidelines
□ Use the recommended size tractor. Weight is as important as horsepower. Too light a tractor will
be overpowered by the plowing action of the disk and its front end will be swung to the left,
requiring constant steering corrections.
□ lways raise the disk out of the ground before turning. If pulling a harrow, roller or other toolbar
behind the disk, raise the disk just clear of the ground before turning.
□ In the field do not back-up with the disk in the fully raised position. This will prevent the disk from
overbalancing to the rear which may damage the control arms.
□ Speed, depth and soil type all determine how level the ground left behind the disk. To minimize
ridging or gouging, limit the disking speed to 4-6 mph.
□ On tractors equipped with a swinging drawbar, allow the drawbar some movement when working
in level or gently rolling fields. In severely rocky conditions, heavy clay or tree stumps allow more
swing in the drawbar. In all other conditions, lock the drawbar in the center position.
□ Pulling a drag or heavy harrow behind the disk can reduce side draft and aid in levelling the soil.
Disk Adjustments
ll single offset disks have a single characteristic in common. Because the front gang of disk blades
are set at an angle to their direction of movement and because these blades are working in “new”
ground compared to the rear disks which are working in ground already partially tilled by the front
blades, a single offset disk tries to rotate clockwise as it is pulled forward through the field. To
perform optimally and to reduce stress and premature wear on components, it is desirable that the
machine draft in a straight line behind the tractor. s well, the concavity of the disk blades is such
that in the center angle setting the blades will accomplish the most tillage with the least horsepower
and minimum wear to the blades. When the disk drafts to one side (i.e. “dog tracking” or “crabbing”)
the gang angles are changed and the quality of the tillage suffers.
There are three types of adjustments that affect the draft of the disk.
REPOSITION THE HITCH.
This adjustment is best accomplished when the disk is not attached to the tractor. Support the bridle
crossbar to which the hitch and side arm are attached with a jack and stand. lternatively the head
of the bridle mast can be chained back to the first member of the main frame. Next loosen the large
fabricated bolt and the 1-1/4” bolt attaching the hitch and side arm to the bridle. Remove the 1-1/4”
bolt attaching the side arm to the plates on the side of the hitch.
The hitch bar can be placed in five fixed positions. Moving the hitch towards “L” as illustrated will
cause the rear of the disk to move to the left when viewed from behind. Moving towards “R” will
cause the rear of the disk to move to the right when viewed from behind.
15

Swing the hitch to the desired position and reattach the side arm through the appropriate bolt holes in
the plates on the side of the hitch. Tighten the 1-1/4” bolts to 1500 ft/lbs and the 2” fabricated bolt to
2000 ft/lbs and rechec after the next 10 hrs of use.
CHANGE THE GANG ANGLES
Changing the angle of the front and rear gangs will affect the penetration of the gangs and mixing of
the soil. By changing the gang angle, the operator can adjust for different soil conditions and
change draft of the dis . Too little total angle between the gangs (minimum angles – MN) may leave
uncut areas and poor penetration. Too much total gang angle (maximum angle – MX) may cause
the dis to side draft in hard or soft ground conditions. The maximum front gang angle may cause
the gang to bulldoze so the soil will not flow through the dis blades. The ideal situation is for the
front and rear gangs to have equal amounts of angle so they both plow to the same depth.
16

To change the angle of the front gang, loosen the
bolts at positions A and remove the bolt at position B.
With the disk slightly lowered into the ground, use the
tractor to carefully move the disk either forward or
backwards to the desired position. Reinstall bolt B
and tighten all four bolts to 1 00 ft/lbs.
To change the angle of the rear gang, loosen the bolts
at positions D, E and F and remove C.
The rear gang of the disk can also be adjusted from
side to side. If the rear gang is moved to the left, it
increases the amount of soil being thrown into the
furrow. If the rear gang is moved to the right, it will
decrease the amount of soil being thrown into the
furrow. To shift the rear gang, loosen the bolts at
positions C and F and remove the bolts at D and E.
With the disk blades resting on the ground, moving
the disk either forward or backward will cause the
gang carrier to shift to the right or left as desired.
Align the bolt holes, reinstall the bolts and tighten all
four bolts to 1 00 ft/lbs.
Increasing the angle of the rear gang relative to the
front gang, may correct a condition where the front
gang is causing the disk to dog track behind the
tractor.
ADJUST THE LEVELING CONTROL ARM
The leveling control arm is used to transfer
pressure to the rear of the disk in order to
increase penetration of the rear disk blades.
Pressure is increased by tightening the
adjustment nut against the spring. This
adjustment is easiest to make when the disk is
in the raised transport position and there is no
pressure on the nut. Once the desired setting
is made, lock the first nut with the second nut
on the eyebolt. When the disk is lowered to the operating position, take care the spring is never fully
compressed. Increasing pressure against the spring will put more down pressure on the rear blades.
Carrying the disk slightly with the wheels while operating will allow the disk to pivot on the wheels
and result in more even blade penetration front to rear. If the disk is operated with the wheels fully
raised, little or no pressure should be placed on the spring. If disking through a sharp depression or
ditch, raise the disk slightly to prevent excessive pressure on the spring and levelling arm.
Increasing pressure on the rear gang can reduce dog tracking by creating a side thrust opposite to
the thrust of the front gang.
17

Service and Maintenance Safety
□ Before servicing the disk, always:
1. Lower the disk to the ground.
2. Shut the tractor engine off.
3. Engage the tractors arking brake and/or lace transmission in ark.
4. Relieve the hydraulics by moving the control lever back and forth.
5. Remove the ignition key.
□ Never work under a raised disk. The disk could fall suddenly causing serious ersonal injury.
Never rely on the hydraulic system to hold the disk u .
□ Periodically visually ins ect the entire disk. Hydraulic fluid leaks and broken, missing or faulty
arts can create a hazard. Make necessary re airs.
□ Use caution when inflating tires. Use a cli -on air chuck, extension hose with gauge, and stand to
one side away from the tire when inflating to avoid the ossibility of ersonal injury due to blow-
offs, etc. Maintain ro er air ressure in the tires. Never exceed the manufacturer’s maximum
.s.i. dis layed on the sidewall of the tire.
□ Before disconnecting any hydraulic line relieve the ressure. Esca ing hydraulic oil under
ressure can have sufficient force to enetrate the skin causing serious ersonal injury. If injured
by esca ing hydraulic fluid, obtain medical treatment immediately.
□ Handle the gang assemblies with care. The disk blades are shar and can cut or slice skin. Use
chock blocks to revent the gang assemblies from rolling during servicing. Wear gloves when
handling the disk blades or gang assemblies.
□ After working on the hydraulic cylinder or any other com onents of the hydraulic system, carefully
cycle the hydraulic cylinder several times to urge air from the system and check all com onents
for leaks. Always be sure the hydraulic lines are free of air and do not leak. ORB fittings may not
leak even though they are only finger tight – tighten with a wrench. Check hydraulic hoses for
cuts or abrasions and re lace if necessary.
□ Securely su ort any machine elements that must be raised for service work. Use suitable lifting
devices and su ort stands where required. If using chains or stra s make sure they are of
sufficient strength for the load and are in good re air.
□ To avoid injury wear gloves, steel-toe boots, safety glasses, hearing rotection, safety helmet and
other safety equi ment where warranted.
□ Understand the service rocedure before doing the required work. Kee the work area clean and
dry.
18

Lubricate the Disk
□ The following illustrations highlight those areas of the disk subject to stress and wear. Unless
indicated otherwise, these fittings should be greased daily or after every 10 hours of operation.
□ Use a pressure lubrication gun and apply a sufficient amount of o. 2 multi-purpose lithium
grease or equivalent to flush out the old grease. Wipe the grease fitting clean before greasing.
□ Grease all fittings before first use of the season and before storage at the end of the season.
19

Check the Oil-Bath Bearings
Visually check the oil-bath bearings daily. Oil-bath bearing assemblies can leak oil from three
locations and attention should be paid to these areas. A - Oil can seep from between the bearing
housing and the end cap or from around the bolts that
hold the end cap to the housing. This condition is
caused by loose bolts or damaged gaskets. Gaskets
are placed between the end cap and the housing to
preload the taper bearings in the housing. The
solution is to tighten the bolts (30 ft lbs) or replace the
gaskets. B – Oil can seep past the check plugs. Plugs
may use a pipe thread. Remove, clean the threads,
apply “pipe dope” or Teflon tape and reinstall. C – Oil
may seep by the metallic duo-cone seals. This may be
caused by worn seals, loose gang axles or extreme
temperature fluctuations. Worn seals should be
replaced immediately to prevent catastrophic bearing
failure. Such a failure will ruin all the other components
of the bearing. Loose gang axles can allow the bearing
flanges to move outwards and thereby allow the seals to
separate. Be sure to keep gang axles tight. Because
the seals are made of metal, they can expand and contract with extreme temperature fluctuations.
When they contract the sealing surfaces separate and small amounts of oil can escape. This will
normally occur when the disk is in storage. Putting the disk to use will normally allow the seals to re-
seat themselves. Check the oil and add 90W gear oil if necessary.
20
Grease wheel bearings (H) sparingly
–
six “shots” of grease every 150
hours.