Isuzu KB P190. Manual - part 123

4B-48  REAR AXLE 

3) Intermittent Noise 

 

Checkpoint  

Trouble 

Cause 

 

Countermeasure 

 

 

 

Axle case inside 

 

 
Ring gear 

 

 

Remove the foreign material 

 

 

Replace the drive pinion and 

the ring gear as a set 

 

 

Foreign material in the axle 

case 

 

 

Warped ring gear 

 

 

Differential cage 

 

 

Tighten the differential cage 

bolts 

 

 

Replace the shaft 

 

 

Loose differential cage bolts 

 

 

Too much spline play 

 

OK 

NG 

NG 

NG 

NG 

OK 

OK 

 

Axle shaft 

 

 

REAR AXLE  4B-49 

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 pinion 

 

 

Replace the differential pinion 

 

 

Replace the rear axle shaft 

 

 

Worn differential pinion 

 

 

Worn rear axle shaft splines 

 

OK 

NG 

NG 

NG 

NG 

OK 

OK 

 

Rear axle shaft 

 

 

4B-50  REAR AXLE 

5) Constant Noise 

 

Checkpoint  

Trouble 

Cause 

 

Countermeasure 

 

Replace the rear axle shaft

Bent 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

Bearing

Flat spot on the drive pinion

Flat spot on the gear teeth

pilot bearing wear

Drive pinion

Flat spot on the drive pinion

gear teeth

Ring gear

Replace the drive pinion and

the ring gear as a set

Worn pinion splines oil seal

NG

NG

NG

NG

NG

OK

OK

OK

Rear axle shaft

 

 

REAR AXLE  4B-51 

2.  VIBRATION 

 

Checkpoint  

Trouble 

Cause 

 

Countermeasure 

 

Replace the rear axle shaft

Bent rear axle shaft

Replace the rear hub bearing

Worn rear hub bearing

OK

Rear axle shaft

NG

NG

Rear hub bearing