Isuzu KB P190. Manual — part 124

4B-52 REAR AXLE

3. OIL LEAKAGE

1) Differential Carrier Leakage

Checkpoint

Trouble

Cause

Countermeasure

Correct the oil level

Too 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 bolt

Loose lock nut and/or liquid

Liquid gasket seal bed

Loose bolts

Oil seal

Worn or defective oil seal

Differential carrier

Clean the air breather

Air breather

Clogged air breather

NG

NG

NG

NG

NG

OK

OK

OK

OK

Gear oil level

REAR AXLE 4B-53

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 breather

Clogged air breather

Differential carrier

Replace the axle case

Axle case

Cracked axle case

NG

NG

NG

NG

OK

OK

OK

Oil filler and drain plug

4B-54 REAR AXLE

3) Axle Case to Inside Brake Drum Leakage

Checkpoint

Trouble

Cause

Countermeasure

Replace the oil seal

Worn or defective oil seal

NG

Oil seal

REAR AXLE 4B-55

4. POWER NOT BEING TRANSMITTED TO THE WHEELS

(PROPELLER SHAFT OPERATION IS NORMAL)

Checkpoint

Trouble

Cause

Countermeasure

Replace the rear axle shaft

Broken rear axle shaft

NG

Replace the drive pinion and

the ring gear as a set

Drive pinion and ring gear

Broken drive pinion and/or ring

gear

Replace the differential gears

and/or the spider

Differential cage gears

Broken differential cage gears

and/or spider

NG

NG

OK

OK

Rear axle shaft