Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual — part 979
4C1-86 FRONT WHEEL DRIVE
6. FRONT WHEEL SHIMMY
Checkpoint
Trouble Cause
Countermeasure
Ball joint or bush
Shimmy damper
Replace the ball joint or bush
Replace the shimmy damper
Worn
Worn
Front alignment
Adjust the front alignment
Adjust or replace
Incorrect
Worn or improperly adjusted
OK
OK
NG
NG
NG
NG
OK
OK
Wheel bearing
Shock absorber
Steering gear out of
adjustment
Replace the shock absorber
Tighten or replace
Worn
Incorrect or broken
Tire
Replace or adjust the inflation
Tighten or replace
Worn or improperly inflated
Loose or worn
OK
NG
NG
NG
NO
OK
OK
Steering linkage
FRONT WHEEL DRIVE 4C1-87
7. AUTOMATIC LOCKING FREE WHEEL HUB
(1) DOES NOT LOCK OR LOCKS ONLY ON ONE SIDE
Note :
1. Stop the vehicle
2. Shift the transfer lever to 4H or 4L
3. Now start driving the vehicle and the
hubs will lock automatically.
4. Once the hubs are locked, they will
remain locked, even if the transfer lever
is shifted from 4L or 4H into 2H, as long
as the vehicle travels in a same
direction.
Checkpoint
Trouble Cause
Countermeasure
Replace
Still will not lock
NG
Try locking procedure once
more
(2) DOES NOT FREEWHEEL OR FREEWHEELS ONLY TO ONE SIDE
Note :
Freewheel operation
1. Stop the vehicle
2. Shift the transfer lever to 2H
3. Back up the vehicle for three or four feet;
this will disengage the front differential.
Checkpoint
Trouble Cause
Countermeasure
Replace
Still will not freewheel
Driver the vehicle for five
minutes and then try the
freewheel procedure again
Still will not freewheel
NG
Try freewheel procedure once
more
4C1-88 FRONT WHEEL DRIVE
(3) NOISES IN AUTOMATIC LOCKING FREE WHEEL HUB
Note :
Some noise at the time of shifting from
“LOCK” to “FREE” or vice versa is normal.
It is not a sign of trouble.
Checkpoint
Trouble Cause
Countermeasure
Operating of automatic locking
free wheel hub
Replace the driven clutch
One side operating
Connect the axial play or
replace the driven clutch
Excessive axial play
NG
NG
OK
Holdout ring axial play
Front axle or joint
Replace or tighten
Damaged or loose
NG
OK
FRONT WHEEL DRIVE 4C1-89
PROPELLER SHAFT
1. NOISE
Checkpoint
Trouble Cause
Countermeasure
Spider bearing
Replace
Worn or jammed
Replace
Damaged or worn
NG
NG
OK
Yoke spline
2. VIBRATION
Shaft balance
Adjust
Unbalance
Replace
Incorrect
NG
NG
OK
Shaft runout
Transmission rear housing
bushing, transfer case
housing bushing
Replace
Worn
NG
OK
Yoke spline
Replace
Jammed
NG
OK
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