35
2
FRONT AXLE (DRIVE)
No.
Symptom
Possible cause
Solution
1
Continuous
noise while
travelling
1. Poor hypoid gear (differential gear) adjustment, or
teeth wear
Adjust or replace
2. Poor hypoid gear (differential gear) bearing
adjustment, or teeth wear
Adjust or replace
3. Loose or out of wheel hub bearings
Adjust or replace
4. Poor ring gear and shaft (differential gear and beveled
pinion) gearing or backlash
Adjust
5. Not enough gear oil
Replenish
2
Abnormal
noise while
travelling
1. Out of hypoid gear (differential gear) bearings.
Replace
2. Out of wheel hub bearings
Replace
3. Out of backlash due to differential gear wear or thrust
washer wear
Replace
4. Foreign matter in the axle housing
Inspect and clean
5. Loose drive shaft or carrier ass'y bolts.
Retighten
3
Abnormal
noise when
turning
corners
1. Out of backlash due to differential gear wear or thrust
washer wear
Replace
2. Broken teeth on the differential gear pinion, or pinion
shaft wear
Replace
4
Differential
heat
1. Out of gear backlash
Adjust
2. Damaged bearing due to excess bearing preload
Replace
5
Oil leakage
from
the axle
housing
1. Oil surface too high (level plug is at regulated value)
Drain
2. Oil seal wear or damage
Replace
3. Poorly installed axle housing
Retighten
4. Poorly installed plug
Retighten
5. Air breather clogged
Clean or replace
6
Oil leakage
from the
wheel hub
1. Oil seal wear or damage
Replace
2. Off-center rotation due to bearing wear or damage
Replace
7
Oil leakage
from the
carrier
1. Oil seal wear or damage
Replace
Troubleshooting
2- 4.
2-4-1. Front axle - troubleshooting
Recommended oil
Model
Qty of oil
Hypoid Gear oil #90 GL-4 / GL-5
FB10P - 18P
5.5
FB20P - 30P
5.0
https://www.forkliftpdfmanuals.com/
