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TRANSMISSION
TROUBLESHOOTING
This chapter is a descriptive and explanatory guide to
common transmission problems. This guide suggests the
correct repair procedures to be followed.
Problem
Oil leakage from the wheel shaft
Oil leakage from housing
Oil leakage from the oil fill plug or oil
drain plug
Oil leakage between housing and fork
Oil leakage from outer boot
Bevel gear group noise
Excessive wheel shaft backlash
8 - 32
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Cause
1. Radial shaft seal incorrectly mounted
or damaged
2. Running surface of the wheel shaft
seal damaged
1. Housing is not sealed
2. Bolts not sealed off or not tightened
to specified torque
1. Dirt between sealing ring and
housing
2. An old sealing ring was used
3. Plug not tightened to specified torque
1. Damaged boot
2. Loosen locking clamp or cover
3. Radial seal damaged or incorrectly
assembled
4. Damaged running surface of the
wheel spacer seal
1. Damaged boot
2. Loosen outer or inner locking clamp
1. Bevel gear incorrectly assembled
2. Damaged gear crown toothing
1. Wheel shaft ball bearings damaged
Action
1. Replace and mount radial shaft seal
correctly
2. Replace wheel shaft
1. Open and seal off half-housings with
sealant
2. Tighten bolts to specified torque
1. Clean and tighten to prescribed
torque
2. Use new sealing ring
3. Tighten plug to specified torque
1. Replace boot
2. Tighten clamp with proper tool
3. Replace and assemble the seal using
an appropriate tool
4. Replace the spacer
1. Replace boot
2. Lock the clamp using an appropriate
tool
1. Replace bevel gear
1. Replace wheel bearings
Griso V1100
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