Page 289 of 4264
FRONT WHEEL DRIVE 4C1-69
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
Worn or improperly adjusted
OK
OK NG NG NG
OK
Wheel bearing
Tighten or replace
Loose or worn
NO
Shock absorber
Replace the shock absorber
Worn
Tire
Replace or adjust the inflation
Worn or improperly inflated
OK
NG NG OK
Steering unit
Page 290 of 4264
4C1-70 FRONT WHEEL DRIVE
4
4 MODEL
1. OIL LEAK AT FRONT AXLE
Checkpoint Trouble Cause Countermeasure
Front axle housingRepair or replaceCracked
Replace the oil sealWorn or defective oil seal
NG NG
OKOil seal
2. OIL LEAK AT PINION SHAFT
Oil sealReplace the oil sealWorn 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)
Page 291 of 4264
FRONT WHEEL DRIVE 4C1-71
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
Wheel bearingWorn
Pinion shaft bearingWorn
Worn or chipped
Wrong 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
Page 292 of 4264
4C1-72 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
Tab
Worn or improperly inflated
NG NG
OK OK
Wheel bearing preload
Page 293 of 4264
FRONT WHEEL DRIVE 4C1-73
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
Worn or improperly adjusted
OK
OK NG NG NG
OK
Wheel bearing
Tighten or replace
Loose or worn
NO
Shock absorber
Replace the shock absorber
Worn
Tire
Replace or adjust the inflation
Worn or improperly inflated
OK
NG NG OK
Steering unit
Page 294 of 4264
4C1-74 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
Page 295 of 4264
FRONT WHEEL DRIVE 4C1-75
SPECIAL SERVICE TOOL
ITEM NO. ILLUSTRATION PART NO. PART NAME
FAL-1
5-8840-0013-0
(J-22888)
Side bearing puller
FAL-14
9-8521-1743-0
(J-8107-2)
Side bearing plug adapter
FAL-3
5-8840-0133-0
(J-8614-01)
Pinion flange holder
FAL-8
9-8521-5032-0
Final pinion spindle
FAL-10
5-8840-0015-0
(J-22912-01)
Separator
FAL12
9-8522-1141-0
(J-24256)
Outer bearing outer race
installer
OTL-1
5-8840-0007-0
(J-8092)
Driver handle
FAL-16
9-8522-1274-0
(J-24252)
Inner bearing outer race
installer
FAL-34
5-8840-2085-0
(J-21777-42)
Pilot
Page 296 of 4264
4C1-76 FRONT WHEEL DRIVE
ITEM NO. ILLUSTRATION PART NO. PART NAME
FAL-41
5-8840-2089-0
(J-23597-9)
Nut & bolt
FAL-36
5-8840-2087-0
(J-23597-7)
Gauge plate
FAL-42
5-8840-0126-0
(J-8001)
Dial indicator
FAL-43
5-8840-0128-0
(J-23597-1)
Arbor
FAL-38
5-8840-2088-0
(J-23597-8)
Disc (2 pcs. required)
FAL-59
9-8522-1165-0
(J-6133-01)
Pinion bearing installer
(for 4WD)
FAL-52
9-8522-1275-0
(J-24250)
Pinion oil seal installer
FAL-56
9-8522-1164-0
(J-24244)
Side bearing installer
FAL-57
5-8522-0053-0
(J-29016)
Outer bearing installer
(for 2WD)