volkswagen Workshop Repair Guides

Volkswagen Golf Workshop Service and Auto Repair Manuals

Adjusting differential > < Removing and installing drive flange oil seal
4 Speed Manual Gearbox 020
Repairing differential
Dismantling and assembling differential
 
U39-0003
Caution
The inner and outer races of the taper roller bearings are matched and must not be interchanged.
  • Bearing housing
  • Shim S2
    • Is always 1mm thick.
  • Outer race
    • ◆ Pulling out => Fig.10
    • ◆ Knocking in =>Fig.11
  • Bearing inner race
    • ◆ Press off =>Fig. 1
    • ◆ To fit, heat to 100° C and press fully home =>Fig. 2
    • ◆ Adjust differential =>page 39-15
    • ◆ Remove shaft for drive flange first. If replaced:
 
U39-0003
  • Shaft for drive flange
    • ◆ Turn slightly when pulling out as thrust washer tends to catch. Press in carefully when installing, do not damage thrust washers.
  • Fit new
    • ◆ 50 Nm
    • ◆ Mod. =>Fig 5 and 6 .
    • ◆ Differential bevel gear shaft secured with extended rivets =>page 39-19
  • Crown wheel is matched to output shaft
    • ◆ Press off =>Fig.3
    • ◆ To fit, heat to 100° C =>Fig.4
    • ◆ If gears are replaced, adjust output shaft =>page 35-20 .
    • ◆ Mod. =>page 39-10
  • Differential housing
    • ◆ If replaced: Adjust differential, page 54 Mod. =>Fig.8
 
U39-0003
  • Bearing inner race
    • ◆ Pull off =>Fig.1
    • ◆ To fit, heat to 100°C and press fully home =>Fig.2
    • ◆ Remove shaft for drive flange first.
    • ◆ If replaced, adjust differential =>page 39-15
  • Outer race
    • ◆ Pulling out =>Fig. 12
    • ◆ Knocking in =>Fig. 13
  • Shim S1
    • ◆ Find thickness =>page 39-15
  • Gearbox housing
  • One-piece thrust washer
    • From 13 12 6
    • ◆ Lubricate with gear oil before installing. Install only in diff. housing with appropriate mark =>Fig.8
 
U39-0003
  • Thrust washers
    • Check for cracks and chipping.
    • From 13 12 6 one-piece thrust washer
  • Differential pinions
    • ◆ Install =>Fig. 7
  • Circlip
    • ◆ Find thickness =>Fig. 9
  • Pinion shaft
    • ◆ Knock out with a drift, do not damage thrust washers when installing.
 
U39-0004

→ Fig.1     Pulling inner race off

  •      A -     Puller such as Kukko 20/1 with 100 mm reach hooks.
 
V39-0645

→ Fig.2     Pressing inner race home

  • ‒ Heat race to 100° first and install
 
U39-0005

→ Fig.3     Pressing crown wheel off

 
V39-0646

→ Fig.4     Heat crown wheel to about 100°C and install

  •      A -     Centering pins (Local manufacture)

Modification

 
V34-0605

From Gearbox 07 08 5.

Crown wheel riveted to differential.

Repair instructions

  • ‒ When renewing differential or crown wheel, drill rivets out with 12 mm drill from the centre punched or countersunk side and knock them out.

→ Fig.5     Drilling rivet heads

Caution
Clean differential before and after drilling. Protect bearings from drill chips.
 
V34-0606
  • ‒ After fitting new parts, secure crown wheel to housing with special bolts, lockplates and nuts - Part No. 171 498 088 (Repair kit).
  • ‒ Use bolts from kit to guide crown wheel.

→ Fig.6     Tighten nuts to 70 Nm

 
V39-0136

→ Fig.7     Installing differential pinions

  • ‒ Insert small pinions and thrust washers, drive shaft in and secure.
  • ‒ Insert large pinions with thrust washers offset 180° and swing in.

Note:

In differential with thrust washer mark =>Fig.8 , lubricate washer with gear oil and install first.

Mod.:

From gearbox 13 12 6

Differential with one-piece thrust washer

 
39-1602

→ Fig.8     Differential housing mark

In housing with this mark, install one-piece plastic thrust washer.

 
U39-0007

→ Fig.9     Find thickness of clirclip -arrow-

  •      1 -     Differential housing
  •      2 -     Differential pinion spindle
  •      3 -     Differential pinion
  •      4 -     Differential gear
  •      5 -     Drive flange shaft
  •      6 -     Circlip
  • ‒ Press shaft against differential pinion spindle.
  • ‒ Press differential gears against housing and press tick circlip into groove. If circlip jams at the sides, install thinner circlips.

Two circlips are available

Part No.

Thickness (mm)

020 409 299

2.0

020 409 299 A

2.3

 
U39-0006

→ Fig.10     Knocking out differential bearing outer race

 
V34-2473

→ Fig.11     Knocking in differential bearing outer race

 
V34-2469

→ Fig.12     Knocking out differential bearing outer race

 
V34-2470

→ Fig.13     Knocking in differential bearing outer race

Adjusting differential > < Removing and installing drive flange oil seal