Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Service manual — part 1134
4A2–4
DIFFERENTIAL (REAR)
Rear Axle Noise
Limited Slip Differential
Condition
Possible cause
Correction
Noise
in
Drive
Excessive pinion to ring gear
backlash.
Adjust.
Worn pinion and ring gear.
Replace
Worn pinion .bearings.
Replace.
Loose pinion bearings.
Adjust.
Excessive pinion end play.
Adjust.
Worn side bearings.
Replace.
Loose side bearings.
Adjust.
Excessive ring gear run-out.
Replace.
Low oil level.
Replenish.
Wrong or poor grade oil.
Replace.
Bent axle housing.
Replace.
Noisy when coasting
Axle noise heard when driving will
usually be heard also on coasting,
although not as loud.
Adjust or replace.
Pinion and ring gear too tight
(audible when slowing down and
disappears when driving).
Adjust.
Intermittent noise
Warped bevel ring.
Replace.
Loose differential case bolts.
Tighten.
Constant
noise
Flat spot on pinion or ring gear
teeth.
Replace.
Flat spot on bearing.
Replace.
Worn pinion splines.
Replace.
Worn axle shaft dowel holes.
Replace.
Worn hub studs.
Replace.
Bent axle shaft.
Replace.
Noisy
on
turns
Worn differential side gears and
pinions.
Replace.
Worn differential shaft.
Replace.
Worn axle shaft splines.
Replace.
Condition
Possible cause
Correction
Does not lock
Broken clutch plates.
Replace the clutch plates.
Chatters in turns
Lubricant contaminated.
Drain lube when hot. Wipe carrier
clean. Refill with lube specified in
Main Data and Specifications at the
end of this section.
Clutch plates dateriorated.
Replace clutch plates.
Noise (in addition to normal clutch
engagement)
Broken clutch plates.
Replace clutch plates.
Damaged case.
Replace unit.
Broken differential gears.
Replace gears.
DIFFERENTIAL (REAR)
4A2–5
Axle Housing
Axle Housing and Associated Parts
420RW030
EndOFCallout
Removal
1. Raise the vehicle and support it with suitable safety
stands.
The hoist must remain under the rear axle housing.
2. Take out brake fluid. Refer to Hydraulic Brakes in
Brake section.
3. Remove rear wheels and tires. Refer to Wheel
Replacement in Suspension section.
4. Remove propeller shaft. Refer to Rear Propeller
Shaft in this section.
5. Drain the rear axle oil into a proper container.
6. Remove parking brake cable, release the
connection between the cable fixing clip equalizer.
Refer to Parking Brakes in Brake section.
7. Move the clip aside and pull out the breather hose.
8. Disconnect the ABS connectors (1) and remove the
brackets attached to the frame and center link.
350R200005
Legend
(1) Lower Link
(2) Stabilizer
(3) Upper Link
(4) Rear Propeller shaft
(5) Shock Absorber
(6) Lateral Rod
(7) Brake Hose
(8) Coil Spring
(9) Parking Cable
(10) Axle Assembly
4A2–6
DIFFERENTIAL (REAR)
9. Loosen the brake tube flare nut, remove the clip and
take out the brake tube.
350RW020
10. Remove the shock absorber.
11. Remove the stabilizer linkage mounting bolts and
nuts (2) from the frame side.
350R200006
12. Remove the lateral rod fixing bolt and nut from the
frame.
13. Remove the upper link mounting bolt and nut (3)
from the axle housing.
460RW015
14. Remove the lower link fixing bolt and nut (4) from
the axle housing.
460RW016
15. Jack down and remove the coil spring and insulator.
16. Axle housing assembly can be separated from the
vehicle on completion of steps 1 – 15.
17. Remove the brake caliper fixing bolt, loosen the
flare nut, release the clip and take out the brake
caliper together with the flexible hose.
18. Remove brake disc.
19. Remove antilock brake system speed sensor fixing
bolt and the clip and bracket on the axle housing.
20. Remove the brake pipe clip and fixing bolt on the
axle housing and take out the brake pipe.
DIFFERENTIAL (REAR)
4A2–7
Installation
1. Install brake pipe.
2. Connect Antilock brake system (ABS) speed sensor
and harness, refer to 4–Wheel Anti–Lock Brake
System (ABS) in Brake section.
3. Install brake disc.
4. Install brake caliper. Refer to Disk Brakes in Brake
section.
5. Install axle housing assembly.
6. Install coil spring and insulator.
7. Install the lower link fixing bolt and nut to the axle
housing. For the procedures in items 7–11, refer to
Suspension section.
8. Install the upper link bolt and nut to the axle
housing.
9. Install the lateral rod fixing nut and bolt to the frame
side.
10. Install the stabilizer linkage mounting nut and bolt to
the frame side.
11. Install the shock absorber.
12. Install brake tube flare nut, Refer to Disk Brakes in
Brake section.
13. Install ABS connector and bracket.
14. Connect breather hose.
15. Install parking brake cable, Refer to Parking Brakes
in Brake section.
16. Bleed brakes. Refer to Hydraulic Brakes in Brake
section.
Axle Shaft, Oil Seal and Bearing
Axle Shaft and Associated Parts
Disc Brake Model
420RW008
EndOFCallout
Drum Brake Model
420RX001
EndOFCallout
Legend
(1) Axle Shaft
(2) Backing Plate
(3) Oil Seal
(4) Bearing
(5) Axle Housing
(6) Lock Washer
(7) Nut
Legend
(1) Axle Shaft
(2) Backing Plate
(3) Oil Seal
(4) Bearing
(5) Axle Housing
(6) Lock Washer
(7) Nut
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