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