Tar River BPD-680 User manual

Rel 04/22
Post Driver
BPD-680 & 750
Operator’s Manual

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BPD-680/750 Post Hole Driver
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BPD-680/750 Post Hole Driver
TO THE DEALER:
Assembly and proper installation of this product is the responsibility of the Tar River dealer. Read manual in-
structions and safety rules. Make sure all items on the Dealer’s Pre-Delivery and Delivery Check Lists in the
Owner’s/Operator’s Manual are completed before releasing equipment to the owner.
TO THE OWNER:
Read this manual before operating your Tar River equipment. The information presented will prepare you to
do a better and safer job. Keep this manual handy for ready reference. Require all operators to read this manual
carefully and become acquainted with all the adjustment and operating procedures before attempting to oper-
ate. Replacement manuals can be obtained from your selling dealer. The equipment you have purchased has
been carefully engineered and manufactured to provide dependable and satisfactory use. Like all mechanical
products, it will require cleaning and upkeep. Lubricate the unit as specified. Observe all safety information in
this manual and safety decals on the equipment. For service, your authorized Tar River dealer has trained me-
chanics, genuine Tar River service parts, and the necessary tools and equipment to handle all your needs. Use
only genuine Tar River service parts. Substitute parts will void the warranty and may not meet standards re-
quired for safe and satisfactory operation.
Record your implement model and serial number in the space provide below. Your dealer will need this infor-
mation to give you prompt, efficient service.
Model Number: ______________________________________
Serial Number: _______________________________________
Date Purchased: ______________________________________

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BPD-680/750 Post Hole Driver
Introduction …………………………………………………………………………………………….. 5
Technical Specifications ……………………………………………………………………………….. 5
Safety …………………………………………………………………………………………………… 6
Safety Signal Words ……………………………………………………………………………………. 6
General Safety Guidelines ……………………………………………………………………………… 7
Safety Decal Care ………………………………………………………………………………………. 7
Before Operation ……………………………………………………………………………………….. 8
During Operation ……………………………………………………………………………………….. 9
Highway And Transport Operations …………………………………………………………………… 10-11
Operating Instructions…………………………………………………………………………………... 12-14
Maintenance…….………………………………………………………………………………………. 15-16
Troubleshooting………………………………………………………………………………………… 17-18
Service - Drive Unit…………………………………………………………………………………….. 19-21
Torque Specifications ………………………………………………………………………………….. 22
Parts Breakdown ……………………………………………………………………………………….. 23-31
Accessories & Auger Replacement Wear Parts………………………………………………………… 32
Warranty ………………………………………………………………………………………………... 34
Table of Contents

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BPD-680/750 Post Hole Driver
Introduction
Thank you for purchasing your BPD Post Driver. The BPD is designed to efficiently drive post and break
concrete on your skid steer or excavator by quickly attaching the adaptor that fits your machine with the
assistance of 2 pins only. All models are designed to use with the auger system and come standard with spring
suspended hydraulic hoses.
Technical Specifications
BPD-680 BPD-750 BPD-750SW
Weight (lbs) 1200 1650 1800
Working pressure (psi) 2500 2500 2500
Required gpm to operate 10.5-19 13-24 13-24
Chisel (in) 2.75 3.00 3.00
Post pad size (in) 8.00 9.00 9.00
Ft. lbs. energy 750 1,000 1,000
Mount Universal Skid Steer Universal Skid Steer Universal Skid Steer
Introduction

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BPD-680/750 Post Hole Driver
Safety
It is important that you read the entire manual and to become familiar with this product before you begin using
it. This product is designed for certain applications only. The manufacturer cannot be responsible for issues
arising from modification. We strongly recommend this product not be modified and /or used for any
application other than that for which it is designed. If you have any questions relative to a particular
application, DO NOT use the product until you have first contacted us to determine if it can or should be
performed on the product.
Read and understand this manual and all safety signs before operating and maintaining . Review the safety
instructions and precautions annually.
Safety Signal Words
TAKE NOTE! This safety alert symbol found though out this manual is used to call you attention to
instructions involving you personal safety and the safety of others. Failure to follow these instructions
can result in injury or death.
This symbol means:
Attention!
Become alert!
Your safety is involved!
Note the use of the signal words, DANGER, WARNING and CAUTION with the safety messag-
es. 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.
WARNING: Indicates a potentially hazardous situation 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 situation that, if not avoided, may result in minor or
moderate injury. It may also be used to alert against unsafe practices.
Important Safety Information

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BPD-680/750 Post Hole Driver
General Safety Guidelines
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.
Replace any DANGER, WARNING, CAUTION or instruction safety decal that is not readable or is missing.
Location of such decals are indicated in this manual. Do not attempt to operate this equipment under the
influence of drugs or alcohol.
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
persons 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.
To prevent injury of death, use a tractor equipped with a Roll Over Protection System (ROPS). Do not paint
over, remove or deface any signs or warning decals on your equipment. Observe all safety signs and practice
the instructions 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!
• 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 safety sign
• Safety signs are available from your Distributor or Dealer Parts Department or the factory.
Safety Decal Care
Important Safety Information

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BPD-680/750 Post Hole Driver
How to install Safety Signs:
• Be sure that the installation area is clean and dry.
• Decide on the exact position before you remove the backing paper.
• Remove the smallest portion of the split backing paper.
• Align the decal 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 decal in place.
• Small air pockets can be pierced with a pin and smoothed out using the piece of decal backing paper.
• Carefully study and understand this manual.
• Do not wear loose-fitting clothing, which may catch in moving parts.
• Always wear protective clothing and substantial shoes.
• Assure that all tires are inflated evenly.
• Give the unit a visual inspection for any loose bolts, worn parts or cracked welds, and make necessary
repairs. Follow the maintenance safety instructions included with this manual.
• Be sure that there are no tools lying on or in the equipment.
• Do not use the unit until you are sure that the area is clear, especially of children and animals.
• Don’t hurry the learning process or take the unit for granted. Ease into it and become familiar with your
new equipment.
• Practice operation of your equipment and its attachments. Completely familiarize yourself and other
operators with its operation before using.
• Use a tractor equipped with a Roll Over Protection System (ROPS) and fasten your seat belt prior to
starting engine.
• The manufacturer does not recommend usage of tractor with ROPS removed.
• Move tractor wheels to the widest recommended settings to increase stability.
• Securely attach to towing unit. Use a high strength, appropriately sized hitch pin with a mechanical retainer
and attach safety chain.
• Do not allow anyone to stand between the tongue or hitch and the towing vehicle when backing up to the
equipment.
• Do not use the unit until you are sure that the area is clear, especially of children and animals.
Before Operation
Important Safety Information

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BPD-680/750 Post Hole Driver
• Children should not be allowed on the machine.
• Clear the area of small children and bystanders before moving the machine.
• If using a towing unit, securely attach feeder by using a hardened 3/4” pin, a metal retainer, and safety
chains if required. Shift towing unit to a lower gear before going down steep downgrades, thus using the
engine as a retarding force. Keep towing vehicle in gear at all times. Slow down for corners and rough
terrain.
• Make sure you are in compliance with all local and state regulations regarding transporting equipment on
public roads and highways. Lights and slow moving signs must be clean and visible by overtaking or
oncoming traffic when machine is transported.
• Beware of bystanders, particularly children! Always look around to make sure that it is safe to start the
engine of the towing vehicle or move the unit. This is particularly important with higher noise levels and
quiet cabs, as you may not hear people shouting.
• NO PASSENGERS ALLOWED! Do not carry passengers anywhere on, or in, the tractor or equipment,
except as required for operation.
• Keep hands and clothing clear of moving parts.
• Do not clean, lubricate or adjust your equipment while it is moving.
• When halting operation, even periodically, set the tractor or towing vehicle brakes, disengage the PTO,
shut off the engine and remove the ignition key.
• Be especially observant of the operating area and terrain. Watch for holes, rocks or hidden hazards. Always
inspect the area prior to operation.
• DO NOT operate near the edge of drop-offs or banks.
• DO NOT operate on steep slopes as overturns may result.
• Operate up and down (not across) intermediate slopes. Avoid sudden starts and stops.
• Never attempt to check a pressurized system for leaks with bare hands! Wear proper hand and eye
protection . Use wood or cardboard when checking for leaks. Oil under pressure, can penetrate skin and
cause a serious medical emergency. If hydraulic fluid penetrates the skin, seek medical treatment
immediately!
• Relieve pressure from the hydraulic lines by cycling all hydraulic controls after shut down and before
disconnecting. Hydraulic systems are under pressure and can cause serious injury or death.
• Before digging, check with local utilities for under ground gas lines, phone lines or electrical lines. Serious
injury or death can occur from contact with electrical lines or explosion from ruptured gas lines.
During Operation
Important Safety Information

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BPD-680/750 Post Hole Driver
• Adopt safe driving practices.
• Keep the brake pedals latched together at all times. Never use independent braking with machine in tow
as loss of control and/or upset of unit can result.
• Always drive at a safe speed relative to local conditions and ensure that your speed is low enough for an
emergency stop to be safe and secure. Keep speed at a minimum.
• Reduce speed prior to turns to avoid the risk of overturning.
• Avoid sudden uphill turns on steep slopes.
• Always keep the tractor or towing vehicle in gear to provide engine braking when going downhill. Do not
coast.
• Do not drink and drive!
• Comply with state and local laws governing highway safety and movement of farm machinery on public
roads.
• Use approved accessory lighting, flags and necessary warning devices to protect operators of other vehicles
on the highway during daylight and nighttime transport. Various safety lights and devices are available
from your dealer.
• 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 and marking requirements.
• When driving the tractor and equipment on the road or highway under 40 kph (20 mph) at night or during
the day, use the amber warning lights and a slow moving vehicle (SMV) identification emblem.
• Plan your route to avoid heavy traffic.
• Be a safe and courteous driver. Always yield to oncoming traffic in all situations, including narrow
bridges, intersections, etc.
• Be observant of bridge loading ratings. Do not cross bridges rated at lower than the gross weight at which
you are operating.
• Watch for obstructions overhead and to the side while transporting.
• Always operate in a position to provide maximum visibility at all times. Make allowances for increased
length and weight of the equipment when making turns, stopping the unit, etc.
• Pick the most level route when transporting across fields. Avoid the edges of ditches or gullies and steep
hillsides.
• Be extra careful when working in inclines.
Highway and Transport Operations
Important Safety Information

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BPD-680/750 Post Hole Driver
• Maneuver the tractor or towing vehicle at safe speeds.
• Avoid overhead wires or other obstacles. Contact with overhead lines could cause serious injury or death.
• Avoid loose fill, rocks and holes, they can be dangerous for equipment operation or movement.
• Allow for unit length when making turns,
• Operate the towing vehicle from the operator’s seat only.
• Never stand alongside of unit with engine running or attempt to start engine and/or operate machine while
standing alongside of unit.
• Never leave running equipment attachments unattended.
• As a precaution, always recheck the hardware on equipment following every 100 hours of operation.
Correct all problems. Follow the maintenance safety procedures.
Highway and Transport Operations
Important Safety Information

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BPD-680/750 Post Hole Driver
Driver
1. Models with an earth auger attachment:
• Use the planetary earth auger system to pre-drill a pilot hole if the soil conditions are rocky, frozen, or too
difficult to simply drive the post into the ground
• Put the diverter valve lever fully in the “down” position to enable the Driver-Breaker hydraulics.
2. Using the Post Driver requires a second person to position the post. This person will set the post at the
desired location and grasp the post securely, making sure their hands are at least 30 inches from the top of the
post.
• Do not operate the hydraulic controls until the second person is clear from the work area!
3. After the post is in position, move the operating vehicle with arms raised, and position the Post Drive
directly over the top of the post.
• Never allow anyone to stand under the Post Driver at any time!
4. Lower the Post Driver over the top of the post making sure the post is inside the bottom portion of the Post
Driver. Continue to lower until the weight of the Post Driver is supported by the post.
• When the post is in place, the second person must move away from the Post Driver and skid steer.
5. The second person must clear the area at this time. Place the loader arms in float. If the skid steer is not
equipped with a float function, lower the loader arms applying pressure to the post.
6. Adjust the position of the skid steer until the post is vertical.
7. Activate the Post Driver by moving the auxiliary hydraulics to the forward position. If not using the skid
loader float position, lower the arms as the post is driven into the ground.
8. Drive the post to the desired depth and stop the hydraulic controls. Raise the Post Driver until the post is
cleared and move to the next post.
Operating Instructions

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BPD-680/750 Post Hole Driver
Breaker
1. To utilize the auger system, the diverter valve must be in the fully down position.
2. Apply sufficient force with the Breaker to guarantee effective breaking. If the force used to break rock is
not sufficient enough, the hammering energy of the piston isn’t effective enough to break
rock. The hammering energy will be transmitted to the Breaker body, the boom and the arm of the skid
loader causing damage to possibly both skid loader and Breaker.
3. Choose the best striking point possible during the breaking operation. Operate the Breaker’s steel rod as
vertical as possible to prevent damage to the rod or other equipment.
4. Use the following precautions when operating the Breaker.
● Stop operations if the hydraulic hoses are vibrating excessively. Excessive vibration can cause failure
of the accumulator and or oil leakage at hose connections. Monitor the condition of the hydraulic
hoses and adaptors continuously.
● Once the rocks are crushed, immediately stop hammering. Avoid empty firing to prevent damage to
implement.
● Do not use the Breaker bar to push rocks. This can damage the skid loader arms and or the boom.
● Do not use the steel bar as a pry bar.
● Do not strike the rock with the steel bar continually for more than one minute.
● Rocks that are extremely large, hard or long, it is recommended to start breaking at cracks or near the
ends. Break the rocks at multiple positions.
● Operate the Break at optimal engine speed.
● Do not operate the Breaker in mud or water.
● Do not drop the steel bar on the rock. Place it on the rock and then begin breaking the rock. Striking
the rock can cause damage to the Breaker and skid steer. Move the Breaker into the working position
and place the steel bar against the rock.
● If the steel bar is extended, retract it before placing against a rock.
● Do not lift any objects with the Breaker.
Operating Instructions

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BPD-680/750 Post Hole Driver
Auger Drive Unit
1. Only operate this unit after thoroughly reading and understanding this Operator’s Manual.
2. Inspect the Auger teeth and points for wear or breakage. Replace as necessary. It is advisable to keep spare
points and teeth on hand.
3. Before lowering, remove the hairpin from the auger systems locking pin. Once lowered, secure the locking
pin back in place.
4. Place the diverter valve lever in the “UP” position to engage the auger system hydraulics.
5. Raise the auger off the ground, set the skid loader engine to a low RPM setting, activate the auger control
valve.
6. The operator must determine the suitable auger speed and skid loader RPMs before digging. Higher RPMs
are generally used for light and sandy soil. Lower RPMs are required for hard, rocky or frozen soil.
Increase or decrease the skid loader engine RPMs accordingly.
7. Place the auger control valve to the neutral position to stop the auger. Lower the auger so that it touches the
ground and penetrates about 2 inches.
● Warning: Avoid excessive side loading to the auger, preventing damage.
8. Activate the auger control valve so that the auger is tuning in a clockwise rotation. Only use enough down
force to start the point to dig.
● Warning: Do not apply excessive pressure or the auger may stall. If this happens, release some
pressure from the auger.
9. Once the auger digs approximately 24”, raise the auger high enough to clean out the hole. Repeat until the
desired depth is achieved.
10. Under certain conditions, the auger may become stuck. In this situation, do not attempt to raise the auger!
Stop, reverse the auger rotation by moving the control valve lever to the reverse position and slowly raise
the auger. Once the auger is free, return the control valve lever back to the forward position and commence
digging.
11. When the desired depth is achieved, all the auger to continue to turn a few seconds longer to clean out the
hole.
12. Repeat steps 10 & 11 if necessary for a cleaner hole.
Operating Instructions

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BPD-680/750 Post Hole Driver
Disassembly & Assembly of Driver Head/Breaker Chisel
Disassembly
1. Removing the auger from the auger system will make it
easier to balance and handle the attachment.
2. Using the skid loader, place the Driver-Breaker on its
back. The supports should be in place to securely balance
and support the attachment.
3. Carefully disconnect the skid loader from the Driver-
Breaker.
4. The skid loader transmission should be in neutral and
come to a complete stop before proceeding.
5. Turn off skid loader engine and remove key.
6. Remove the “A” stop pin to allow the driver/breaker chisel
to be released from the Post Driver.
Assembly
1. Clean and lubricate the driver head/breaker chisel.
2. Insert the driver head/breaker chisel into position.
3. Insert the stop pin, making sure it is fully inserted and in
the proper position.
Maintenance
“A” Stop Pin

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BPD-680/750 Post Hole Driver
Charging & Discharging of Nitrogen in the Back Head
Charging
1. Remove inflation valve cap” from the back head.
2. Connect the end of the pressure gauge adapter (1) to the
inflation valve on the back head.
3. Remove the end cap (4) to uncover the pipe fitting for the
hose.
4. Connect the hose from the pipe fitting to a Nitrogen tank.
5. Make sure the pressure relief valve is (3) tightened.
6. Begin filling the back head with Nitrogen by pressing and
holding the pressure release pin (2).
7. Once the required pressure is achieved, remove pressure
from the pressure relief pin (2).
8. Disconnect hydraulic hose and reattach the end cap (4).
9. Disconnect the end of the pressure guage adapter (1) and
reattach the inflation valve cap to the back of the head.
Discharging
Danger! It is not recommended to disassemble or assemble the back head. If such action is taken,
the Nitrogen must be fully discharged first! An explosion is highly possible if the through bolts are
loosened before discharging the Nitrogen.
1. Remove the inflation valve cap
2. Connect the pressure gauge adapter (1) to the inflation valve
on the back head.
3. Loosen the pressure relief valve (3).
4. Begin discharging Nitrogen by pressing and holding the
pressure release pin.
5. Release the pressure release pin once Nitrogen has stopped
discharging.
6. Disconnect the pressure gauge adapter (1) and reattach the
inflation valve cap.
Maintenance

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BPD-680/750 Post Hole Driver
Troubleshooting
Problem Possible Cause Solution
The driver-breaker fails to
strike
The driver head/breaking chisel is jammed Inspect and replace worn parts
Insufficient hydraulic oil Supplement the hydraulic oil
Oil temperature is too low The oil temperature should be at least 87
degrees Fahrenheit/
Improper main valve operation Inspect the operation of the breaking button
in the driving cab
The internal pressure of the back head is too
low Inspect the Nitrogen pressure
There is hydraulic oil leakage in the cap
chamber of the back head Replace the sealing elements
Poor working performance of the hydraulic oil Immediately contact the excavator manufac-
turer
The striking frequency is
normal at first, but be-
comes irregular with use
Oil temperature rise, caused by oil shortage Supplement the hydraulic oil
Excessively high pressure in the back head Inspect the gas pressure
The lowering pressure of the attachment is
insufficient Inspect the boom and arm of the excavator
The driver head/breaking chisel is excessively
worn
Remove the part and make inspections, re-
placing if necessary
The hydraulic oil pump is in poor performance Have the oil pipeline inspected by the exca-
vator manufacturer
Weak striking force The gas pressure in the back head is relative-
ly low Inspect the gas pressure
Low striking frequency
The gas pressure is too high Inspect the gas pressure
The lowering pressure of the attachment is
insufficient Inspect the boom and arm of the excavator
The working pressure is too high Inspect the set pressure
Poor working performance of the hydraulic oil Have the oil pipeline inspected by the manu-
facturer
The oil temperature rises
too fast
The heat dispersion of the excavator is
not good; the hydraulic pump is under
premature abrasion and the pipeline is
blocked
Change the settings of the attachment; in-
spect or replace the hydraulic pump
The hydraulic oil is emul-
sified The oil is mixed with water Replace the hydraulic oil immediately
The engine speed is re-
duced sharply
The output power of the engine is insufficient Lower the pressure in the back head
The engine performance is downgraded
Lower the position of the throttle; require the
excavator manufacturer to make an inspec-
tion
The oil temperature is too low Preheat before operation

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BPD-680/750 Post Hole Driver
Troubleshooting
Problem Possible Cause Solution
Slow speed
Low flow Check the flow meter; if low investigate the
cause
Line restrictions Clear lines
Fittings or connections too small Replace with proper fittings
The oil filter is dirty Replace the oil filter
The hydraulic pump is worn or damaged See dealer for repair
Insufficient digging
power
The teeth or auger point are worn Replace worn parts
Low system pressure Check the pressure gauge; if low, investigate
cause
Relief valve damaged or set incorrectly Adjust or replace the relief valve as required
Excessive load Reduce the load to remain within machine spec-
ifications
The hydraulic oil pump is in poor performance Have the oil pipeline inspected by the excavator
manufacturer
Reverse direcon Hydraulic hoses are reversed Re-install hydraulic hoses in correct order
Excessive oil heang
Line restrictions Clear lines
Hydraulic fluid is dirty Replace hydraulic fluid and filter
Insufficient amount of hydraulic fluid Fill the reservoir to proper level
Oil leaks
Hoses and/or fittings are loose or damaged Tighten or replace parts as required
Hydraulic motor seals are worn or damaged See dealer for repair

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BPD-680/750 Post Hole Driver
Service - Drive Unit
Disassembly
Note: Refer to “Auger System Drive Unit” diagram on page 30 for reference numbers.
1. Remove 12, (#17) socket head cap screws and 12 (#16) washers from cover (#14).
2. Lift the cover (#14) off the assembly. Item (#13) thrust washer, usually remains with the cover.
3. Lift (#12) sun gear from (#11) secondary carrier assembly.
4. Remove (#11) secondary carrier assembly from (#10) ring gear.
5. Remove (#10) from (#6) hub.
6. One tab of (#8) lock washer will be engaged in a slot of (#9) bearing nut. Bend the tab back to release (#8)
lock washer. Remove (#9) bearing nut, (#8), and (#7) thrust washer.
7. Take care to not damage the (#1) shaft splines and threads. Note: the (#3) bearing cone is designed with a
slip fit for (#1) shaft.
8. Remove (#2) seal and (#3) bearing cones from (#6) hub. Inspect (#4) bearing cups in (#6) hub. It is not
necessary to remove these parts unless replacing.
Assembly
Note: Refer to “Auger System Drive Unit” diagram on page 30 for reference numbers.
1. Press new (#4) bearing cups in each side of (#6) hub. It is recommended to replace (#4) bearing cups and
(#3) bearing cones in sets.
2. Assemble (#3) bearing cone into (#4) bearing cup at the seal end of (#6) hub and press a new (#2) seal into
(#6) hub.
3. Lubricate (#2) shaft oil seal and lower (#6) hub onto (#1) output shaft. Be sure to keep (#6) hub centered to
prevent damage to the oil seal. Note: Heavy duty oil seals have no lubricant on (#2) seal, (#1) output shaft
or (#6) hub.
4. Assemble (#3) inner bearing cone over (#1) output shaft. Place (#3) bearing cone over the output shaft
bearing journal. Press (#3) bearing cone down until the rollers are just touching (#4) bearing cup. Caution:
Avoid pressing (#3) bearing cone too far.
Note: A special locknut wrench (PN 613A) is required for the removal of the bearing locknut. Contact
Auburn Gear to purchase this and other service tools.

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BPD-680/750 Post Hole Driver
Service - Drive Unit
Assembly (cont.)
5. Install (#7) thrust washer with the tab in the keyway of (#1) output shaft and (#8) lock washer.
6. Install (#9) lock nut and tighten to 30 ft-lbs (41 Nm). Rotate the hub clockwise twenty turns then counter-
clockwise twenty turns. Tighten (#9) lock nut to 50 ft-lbs (68 Nm). Repeat the hub rotation process in this step
and then tighten (#9) to 70 ft-lbs (95 Nm).
7. Secure (#9) lock nut buy bending the (#8) lock nut tab into one of the 4 slots of (#9) lock nut. Note: If no tab
from (#8) lock washer aligns with a slot of (#9) lock nut, tighten (#9) lock nut until one of the slots aligns with
(#8) lock washer tab.
8. Clean the mating surface and apply a bead of silicone sealant to the face of (#6) hub that mates with (#10)
ring gear. Refer to instructions on the sealant package for application. Assemble (#10) ring gear to (#6) hub,
being careful to align the bolt holes.
9. Assemble (#11) secondary carrier assembly in (#10) ring gear, aligning the gear teeth. The carrier splines
will mesh with the splines on (#11) output shaft.
10. Install (#12) sun gear into (#11) secondary carrier assembly. (#12) sun gear should turn freely by hand
when assembled.
11. Apply a bead of silicone sealant to cover the face of (#10) ring gear. Secure (#13) thrust washer, using a
small amount of grease or silicone sealant, with the tangs engaged in (#14) cover. Assemble (#14) cover to
(#10) ring gear.
12. Install twelve (#17) hex head cap screws and 12 (#16) washers. Torque to 45-50 ft-lbs (60-68 Nm).
13. Position the filler opening vertically and fill it with lubricant to the proper level.
Carrier Assemblies
It is recommended that the secondary carrier assembly be serviced in its entirety to protect the integrity of the
Power Wheel Drive Unit.