Front Final Drive, Differential (0A3A Transmission)

Differential

Special tools, testers and auxiliary items required

• Drift (VW 295)

• Pressure plate (VW 401)

• Pressure plate (VW 402)

• Punch (VW 408 A)

• Punch (VW 411)

• Punch (VW 412)

• Thrust pad (VW 447 H)

• Thrust shell for drive pinion bearing (VW 470)

• Sleeve (30 - 14)

• Press tube (30 - 23)

• Sleeve (40 - 103)

• Thrust piece (2050)

• Taper roller bearing puller (VAG 1582)

• Attachment (VAG 1582/1)

• Internal extractor (Kukko 21/8)

• Support (Kukko 22/2)

Pulling outer race for right tapered roller bearing out of transmission housing





A Support, e.g. ( Kukko 22/2)
B Internal puller 56 to 70 mm, e.g. (Kukko 21/8)

- After removing, check shims for damage.

Right tapered roller bearing outer race, driving into transmission housing





Tapered roller bearing inner races, removing





- Before installing puller, set thrust pad (VW 447 H) onto differential housing.

• Removing differential left and right tapered roller bearing inner race is identical.

Pressing off left and right tapered roller bearing inner race





• Left and right tapered roller bearing inner races are pressed off with the same tools.

CAUTION!
Wear protective gloves!

- Heat inner race to approximately 100 °C, fit in position and press in.

Left tapered roller bearing outer race, removing from final drive cover





A Support, e.g. ( Kukko 22/2)
B Internal puller 56 to 70 mm, e.g. (Kukko 21/8)

- After removing, check shims for damage.

Left tapered roller bearing outer race, pressing into final drive cover





Driving ring gear from housing





Heat ring gear to approximately 100 °C and install





- When installing ring gear, guide with centering pins - A - (self-made).

CAUTION!
Wear protective gloves!

- Before installing new screws, allow to cool off somewhat. Then tighten to specification.

Differential planetary gear axle, removing





Spring pin is sheared off when pressing out.

- Drive remaining spring pin parts out of differential housing and differential planetary gear axle.

Differential planetary gears, installing





- Insert thrust washer union with transmission fluid.

- Insert large differential planetary gears.

- Install small differential bevel gears at 180 degrees from their final position and rotate into place - arrow -.

- Align holes of thrust washer union, small planetary gears and differential housing.

- Drive axle for differential bevel gears into final position and secure.