Page 569 of 6020
FRONT WHEEL DRIVE 4C1-65
2. FRONT WHEEL SHIMMY
Checkpoint Trouble Cause Countermeasure
Ball joint or bush
Replace the ball joint or bush
Worn
Front alignment
Adjust the front alignment
Adjust or replace
Incorrect
W orn or improperly adjusted
OK
OK NG
NG
NG
OK
W heel bearing
Tighten or replace
Loose or worn
NG
Shock absorber
Replace the shock absorber
Worn
Tire
Replace or adjust the inflation
W orn or improperly inflated
OK
NG
NG
OK
Steering unit
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ISUZU KB P190 2007
Page 570 of 6020
4C1-66 FRONT WHEEL DRIVE
4× 4 MODEL
1. OIL LEAK AT FRONT AXLE
Checkpoint Trouble Cause Countermeasure
Front axle housingRepair or replaceCracked
Replace the oil sealW orn or defective oil seal
NG
NG
OKOil seal
2. OIL LEAK AT PINION SHAFT
Oil sealReplace the oil sealW orn or defective
Correct the oil levelToo much gear oil
NG
NG
OKGear oil level
Pinion flangeTighten or replaceLoose or damaged
NG
OK
3. NOISES IN FRONT AXLE DRIVE SHAFT JOINT
Replace the drive shaft joints
and bellows
Broken or worn
NG
Drive shaft joints and bellows
(UJ and DOJ)
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ISUZU KB P190 2007
Page 571 of 6020
FRONT WHEEL DRIVE 4C1-67
4. NOISES IN FRONT AXLE
Checkpoint Trouble Cause Countermeasure
Replenish the gear oilInsufficient gear oil
NG
Replace the wheel bearing
Replace the pinion shaft
bearing
Replace the ring gear pinion
gear or side gear
Replace the gear oil
W heel bearingWorn
Pinion shaft bearingWorn
W orn or chipped
W rong or poor grade gear oil
Ring gear, pinion gear or side
gear
Adjust the backlashDrive pinion to ring gear
backlashToo much or too little backlash
NG
NG
NG
NG
NG
OK
OK
OK
OK
Oil level
Tighten or replaceDifferential bearingLoose or worn
NG
OK
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ISUZU KB P190 2007
Page 572 of 6020
4C1-68 FRONT WHEEL DRIVE
5. WANDERS AND PULLS
Checkpoint Trouble Cause Countermeasure
Adjust the wheel bearing
preload
Too tight
NG
Adjust the front alignment
Front alignment
Incorrect
Tighten or replace
Steering unit
Loose or worn
NG
NG
OK
OK
Tighten or replace
Replace or adjust the inflation
Suspension
Front or rear suspension parts
loose or broken
Tire
W orn or improperly inflated
NG
NG
OK
OK
W heel bearing preload
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ISUZU KB P190 2007
Page 573 of 6020
FRONT WHEEL DRIVE 4C1-69
6. FRONT WHEEL SHIMMY
Checkpoint Trouble Cause Countermeasure
Ball joint or bush
Replace the ball joint or bush
Worn
Front alignment
Adjust the front alignment
Adjust or replace
Incorrect
W orn or improperly adjusted
OK
OK NG
NG
NG
OK
W heel bearing
Tighten or replace
Loose or worn
NG
Shock absorber
Replace the shock absorber
Worn
Tire
Replace or adjust the inflation
W orn or improperly inflated
OK NG
NG
OK
Steering unit
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ISUZU KB P190 2007
Page 574 of 6020
4C1-70 FRONT WHEEL DRIVE
PROPELLER SHAFT 1. NOISE
Checkpoint Trouble Cause Countermeasure
Spider bearingReplaceWorn or jammed
ReplaceDamaged or worn
NG
NG
OKYoke spline
2. VIBRATION
Shaft balanceAdjustUnbalance
ReplaceIncorrect
NG
NG
OKShaft runout
Transmission rear housing
bushing, transfer case
housing bushing
ReplaceWorn
NG
OK
Yoke splineReplaceJammed
NG
OK
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ISUZU KB P190 2007
Page 575 of 6020
FRONT WHEEL DRIVE 4C1-71
SPECIAL SERVICE TOOL
ILLUSTRATION PART NO. PART NAME
5-8840-2309-0 Ft axle mount bushing installer & remover
5-8840-2745-0 Pliers
5-8840-00
13-0
(J-22888) Side bearing remover
9-852
1-1 743-0
(J-8 107-2) Side bearing plug adapter
5-8840-0
133-0
(J-86 14-0 1) Pinion flange holder
9-852
1-5032-0 Final pinion spindle
5-8840-00
15-0
(J-229 12-0 1) Separator
9-8522-
1141-0
(J-24256) Outer bearing outer race installer
5-8840-0007-0
(J-8092) Grip
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ISUZU KB P190 2007
Page 576 of 6020
4C1-72 FRONT WHEEL DRIVE
ILLUSTRATION PART NO. PART NAME
9-8522-
1274-0
(J-24252) Inner bearing outer race installer
5-8840-2085-0
(J-2 1777-42) Pilot
5-8840-2089-0
(J-23597-9) Nut & bolt
5-8840-2087-0
(J-23597-7) Gauge plate
5-8840-0
126-0
(J-800 1) Dial indicator
5-8840-0
128-0
(J-23597- 1) Arbor
5-8840-2088-0
(J-23597-8) Disc (2 pcs. required)
9-8522-
1165-0
(J-6 133-0 1) Pinion bearing installer (for 4W D)
9-8522-
1275-0
(J-24250) Pinion oil seal installer
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ISUZU KB P190 2007