Opel Frontera UBS. Manual - part 104

DIFFERENTIAL (FRONT)

4A1–2

Front Drive Axle

Diagnosis

Condition

Possible cause

Correction

Oil Leak At Front Axle

Worn or defective oil seal.

Replace the oil seal.

Front axle housing cracked.

Repair or replace.

Oil Leak At Pinion Shaft

Too much gear oil.

Correct the oil level.

Oil seal worn or defective.

Replace the oil seal.

Pinion flange loose or damaged.

Tighten or replace.

Noises In Front Axle Drive Shaft
Joint

Broken or worn drive shaft joints and
bellows (BJ and DOJ).

Replace the drive shaft joints and
bellows.

“Clank” When Accelerating From
“Coast”

Loose drive shaft joint to output shaft
bolts.

Tighten.

Damaged inner drive shaft joint.

Replace.

Shudder or Vibration During
Acceleration

Excessive drive shaft joint angle.

Repair.

Acceleration

Worn or damaged drive shaft joints.

Replace.

Sticking spider assembly (inner drive
shaft joint).

Lubricate or replace.

Sticking joint assembly (outer drive
shaft joint).

Lubricate or replace.

Vibration At Highway Speeds

Out of balance or out of round tires.

Balance or replace.

Front end out of alignment.

Align.

Noises in Front Axle

Insufficient gear oil.

Replenish the gear oil.

Wrong or poor grade gear oil.

Replace the gear oil.

Drive pinion to ring gear backlash
incorrect.

Adjust the backlash.

Worn or chipped ring gear, pinion
gear or side gear.

Replace the ring gear, pinion gear or
side gear.

Pinion shaft bearing worn.

Replace the pinion shaft bearing.

Wheel bearing worn.

Replace the wheel bearing.

Differential bearing loose or worn.

Tighten or replace.

Wanders and Pulls

Wheel bearing preload too tight.

Adjust the wheel bearing preload.

Incorrect front alignment.

Adjust the front alignment.

Steering linkage loose or worn.

Tighten or replace.

Steering gear out of adjustment.

Adjust or replace the steering gear.

Tire worn or improperly inflated.

Adjust the inflation or replace.

Front or rear suspension parts loose
or broken.

Tighten or replace.

Front Wheel Shimmy

Wheel bearing worn or improperly
adjusted.

Adjust or replace.

Incorrect front alignment.

Adjust the front alignment.

Worn ball joint or bush.

Replace the ball joint or bush.

Steering linkage loose or worn.

Tighten or replace.

Steering gear out of adjustment.

Tighten or replace.

Tire worn or improperly inflated.

Replace or adjust the inflation.

Shock absorber worn.

Replace the shock absorber.

4A1–3

DIFFERENTIAL (FRONT)

Pinion Shaft Oil Seal

Pinion Shaft Oil Seal and Associated Parts

415RW015

Legend

(1) Flange Nut
(2) Flange

(3) Oil Seal
(4) Outer Bearing
(5) Collapsible Spacer

Removal

1. Raise the vehicle and support it at the frame.

The hoist must remain under the front axle housing.

2. Drain the front axle oil by loosening the drain plug(1).

412RS001

DIFFERENTIAL (FRONT)

4A1–4

3. Remove the front propeller shaft. Refer to Front

Propeller Shaft in this section.

4. Remove flange nut by using pinion flange holder

5–8840–2157–0.

425RW045

5. Remove flange.
6. Remove oil seal.
7. Remove outer bearing by using remover

5–8840–2323–0.

415RW022

8. Remove collapsible spacer.

Inspection and Repair

Make necessary correction or parts replacement if wear,
damage, corrosion or any other abnormal conditions are
found through inspection.
Check the following parts:

1. Seal surface of the pinion.
2. Cage bore for burns.

Installation

1. Install collapsible spacer. Discard the used

collapsible spacer and install a new one.

2. Install outer bearing.

NOTE: Do not drive in, but just temporarily set in the outer
bearing by hand, which should be indirectly pressed in
finally by tightening the flange nut.

3. Install oil seal, use oil seal installer 9–8522–1275–0 to

install a new oil seal that has been soaked in axle
lubricant.

415RW021

4. Install flange.
5. Install flange nut, refer to Differential Assembly  for

flange nut reassembly in this section.

NOTE: Discard the used nut and install a new one.

4A1–5

DIFFERENTIAL (FRONT)

Front Drive Axle Assembly

Front Drive Axle Assembly and Associated Parts

412RW001

Legend

(1) Mounting Bolt and Nut
(2) Washer and Spacer
(3) Breather Hose (with Shift on the Fly)
(4) Shift Switch Connector (with Shift on the Fly)
(5) Protector (with Shift on the Fly)

(6) Front Axle Case Assembly and Front Drive

Shaft Assembly (LH side)

(7) Hub Assembly (Disc, Back Plate and Knuckle)
(8) Front Drive Shaft Assembly (RH side)
(9) Propeller Shaft (With TOD)

(10) Propeller Shaft

(11) Bolt

Removal

1. Jack up the vehicle and support it using jack stands.
2. Remove the tire and wheel.