2007 ISUZU KB P190 Workshop Repair Manual

Page 489 of 6020

ISUZU KB P190 2007  Workshop Repair Manual REAR AXLE  4B-45 
TROUBLESHOOTING 
  
  
Refer to this Section to quickly diagnose and repai
r
rear axle problems.  
Each troubleshooting chart has three headings 
arranged from left to right. 
(1) Ch

Page 490 of 6020

ISUZU KB P190 2007  Workshop Repair Manual 4B-46  REAR AXLE 
1.  ABNORMAL REAR AXLE NOISE 
1)  Noise when the Engine is Driving the Vehicle 
 
Checkpoint  Trouble  Cause  Countermeasure 
 
Replenish the gear oilInsufficient gear oil
NG
Differe

Page 491 of 6020

ISUZU KB P190 2007  Workshop Repair Manual REAR AXLE  4B-47 
Checkpoint  Trouble  Cause  Countermeasure 
 
Replace the drive pinion and 
the ring gear as a setExcessive ring gear run-out
Replace the drive pinion and
the ring gear as a setDrive

Page 492 of 6020

ISUZU KB P190 2007  Workshop Repair Manual 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

Page 493 of 6020

ISUZU KB P190 2007  Workshop Repair Manual 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 
 
 
Repl

Page 494 of 6020

ISUZU KB P190 2007  Workshop Repair Manual 4B-50  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
Repla

Page 495 of 6020

ISUZU KB P190 2007  Workshop Repair Manual REAR AXLE  4B-51 
2.  VIBRATION 
 
Checkpoint  Trouble  Cause  Countermeasure 
 
Replace the rear axle shaftBent rear axle shaft
Replace the rear hub bearingW orn rear hub bearing
OK
Rear axle shaft N

Page 496 of 6020

ISUZU KB P190 2007  Workshop Repair Manual 4B-52  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