ISUZU TF SERIES 2004 Workshop Manual

REAR AXLE 4B-47

4) Noise when the Vehicle is Turning

Checkpoint Trouble Cause Countermeasure

Differential cross pin
Side gear
Replace the differential cross
pin
Replace the side gear
Worn differential cross pin
Worn side gear
Differential pinionReplace the differential pinion
Replace the rear axle shaft
Worn differential pinion
Worn rear axle shaft splines
OK
NG NG NG NO
OK OKRear axle shaft

4B-48 REAR AXLE

5) Constant Noise

Checkpoint Trouble Cause Countermeasure

Replace the rear axle shaftBent rear axle shaft NG
Replace the side bearing
Replace the drive pinion
bearing
Replace the drive pinion and
the ring gear as a set
Replace the drive pinion and
the ring gear as a set
Flat spot on the side bearing
oil seal
BearingFlat spot on the drive pinion
Flat spot on the gear teeth
pilot bearing wear
Drive pinionFlat spot on the drive pinion
gear teeth
Ring gear
Replace the drive pinion and
the ring gear as a setWorn pinion splines oil seal
NG NG NG NG NG
OK OK
OK
Rear axle shaft

REAR AXLE 4B-49

2. VIBRATION

Checkpoint Trouble Cause Countermeasure

Replace the rear axle shaftBent rear axle shaft
Replace the rear hub bearingWorn rear hub bearing
OK
Rear axle shaftNG NG
Rear hub bearing

4B-50 REAR AXLE

3. OIL LEAKAGE
1) Differential Carrier Leakage

Checkpoint Trouble Cause Countermeasure

Correct the oil levelToo much gear oil NG
Reapply the liquid gasket
and/or tighten the lock nut to
the specified torque
Reapply the liquid gasket
Tighten the bolts to the
specified torque
Replace the oil seal
Ring gear thrust boltLoose lock nut and/or liquid
Liquid gasket seal bed
Loose bolts
Oil sealWorn or defective oil seal
Differential carrier
Clean the air breatherAir breatherClogged air breather
NG NG NG NG NG
OK OK OK
OK
Gear oil level

REAR AXLE 4B-51

2) Axle Case Leakage

Checkpoint Trouble Cause Countermeasure

Tighten the drain plug and/or
replace the gasket(s)Loose drain plug and/or
defective gasket(s) NG
Reapply the liquid gasket
Tighten the bolts to the
specified torque
Clean the air breather
Liquid gasket seal bad
Loose bolts
Air breatherClogged air breather
Differential carrier
Replace the axle caseAxle caseCracked axle case
NG NG NG NG
OK OK
OK
Oil filler and drain plug

4B-52 REAR AXLE

3) Axle Case to Inside Brake Drum Leakage

Checkpoint Trouble Cause Countermeasure

Replace the oil sealWorn or defective oil seal NGOil seal

REAR AXLE 4B-53

4. POWER NOT BEING TRANSMITTED TO THE WHEELS
(PROPELLER SHAFT OPERATION IS NORMAL)

Checkpoint Trouble Cause Countermeasure

Replace the rear axle shaftBroken rear axle shaft NG
Replace the drive pinion and
the ring gear as a setDrive pinion and ring gearBroken drive pinion and/or ring
gear
Replace the differential gears
and/or the spiderDifferential cage gearsBroken differential cage gears
and/or spider NG NG
OK OK
Rear axle shaft

4B-54 REAR AXLE

SPECIAL SERVICE TOOL
ITEM NO. ILLUSTRATION PART NO. PART NAME





5-8840-0079-0


Wheel Pin Remover





9-8522-1269-0

Oil Seal Installer



5-8840-2202-0

Oil Seal Installer



9-8522-1271-0

Support Stand



5-8840-0275-0

Holding Fixture



5-8840-0003-0

Holding Fixture Base



5-8840-0013-0

Remover



5-8840-0014-0

Remover



5-8840-2196-0

Adapter

REAR AXLE 4B-55

ITEM NO. ILLUSTRATION PART NO. PART NAME



5-8840-0133-0

Flange Holder



5-8840-2197-0

Separator



5-8840-2164-0

Installer



5-8840-0007-0

Grip



5-8840-2163-0

Installer



5-8840-2166-0

Gauge Plate



5-8840-0129-0

Inner Pilot



5-8840-0127-0

Stud and Nut



5-8840-2085-0

Outer Pilot

4B-56 REAR AXLE

ITEM NO. ILLUSTRATION PART NO. PART NAME



5-8840-0126-0

Dial Indicator



5-8840-2167-0

Disc



5-8840-0128-0

Arbor



9-8522-1165-0

Installer



5-8840-2165-0

Installer



5-8840-2293-0

Punch



5-8840-2162-0

Installer



5-8840-2682-0

Sid Gear Holder