Driveshaft Flange Seal

Driveshaft Flange Seal

Special tools, testers and auxiliary items required

• Engine and transmission jack (VAG1383A) with universal mounting (VAG1359/2)

• Retainer (3028)

• Puller (VW391)

• Slide hammer-complete set (VW771)

• Additional part for VW 771 (VW771/37)

• Mandrel (3026)

• Drive pinion (3143)

• Rear final drive installed

- Observe general repair instructions. Refer to => [ Components ] Rear Final Drive 01R (01AA,01EA,02XA,0A3A,01V,01VA,09LA Transmission).

Removing

- Remove rear section of exhaust system as from clamp(s).

- Check whether there is a factory marking (paint dot) on drive shaft. If you do not find one, mark the position of the Constant Velocity (CV) joint - arrow A - relative to the rear final drive - arrow B - with a colored dot





- Disconnect driveshaft from rear final drive and tie it up to exhaust system brackets. Refer to => [ Driveshaft ] Driveshaft.

- Place engine and transmission jack (VAG1383A ) with universal mounting (1359/2) under final drive and secure final drive.

- Remove bolts - arrows - of left final drive support.





- Carefully lower final drive until flange is freely accessible.

- Color mark the position of the securing nut for the drive pinion.

Calculate dimension " a" and dimension "b"





• Distance of flange to drive pinion =

Dimension a

• Distance of flange to securing nut for the drive pinion =

Dimension b

- Note calculated dimensions

- Count turns when unscrewing the securing nut and make a note of them.

• Illustrations show the final drive removed for the following procedure.

- Install support tool (3028) and remove drive pinion nut.





- Place drip tray underneath to collect oil.

- Detach flange with removal tool (VW391).





A - Install two M8 x 30 bolts into flange.

- Remove sealing ring.





Installing

Installation is carried out in reverse order. Note the following:

- Replace O-ring between drive pinion bearing and flange.





- Lightly oil O-ring before installing.

- Pack space between sealing and dust lips half full with sealing grease (G 052 128 A1).

- Lightly oil outer circumference of seal.

- Drive in seal for drive shaft flange onto stop with drift ( 3026).





- Drive shaft flange onto drive pinion until securing nut can be mounted.





• Use the old nut to reattach the flange to the drive pinion. Otherwise the original installed position will not be relocated.

- Clean drive pinion nut and threads on drive pinion of oil and grease residues. Thinly coat threads with locking fluid (D 000 600).

• The number of turns when reattaching must be the same as during unscrewing.

Perform control measurement - check dimension " a" and dimension "b" onward.





• O-ring - 1 - must be installed when measuring.

• The nut must be returned to exactly the marked position.

• Maximum permissible deviation from original measurements: ± 0.3 mm.

- Lock nut.





- Move final drive back to installation position.

- Install final drive to front mounting bracket - arrows -.





- Top off gear oil in rear final drive and check oil level. Refer to => [ Checking Rear Final Drive Gear Oil Level ] Rear Final Drive 01R (01AA,01EA,02XA,0A3A,01V,01VA,09LA Transmission).

- If there was a factory marking at the driveshaft determine now the radial run out at the flange/driveshaft. Refer to => [ Driveshaft Flange Measuring Radial Run Out and Marking ] Service and Repair. Attach driveshaft in such a way that the color coding at the driveshaft are aligned with new marking at flange.

- If the position of the driveshaft relative to the flange/driveshaft were marked before removal the driveshaft must be reattached at same position. Refer to => [ Driveshaft ] Driveshaft.

Observe installation instructions, refer to => [ Driveshaft Assembly Overview ] Driveshaft Assembly Overview

- Replace seal on driveshaft flange and tighten driveshaft to specifications. Refer to => [ Driveshaft ] Driveshaft.

- Stress free alignment of exhaust system. Refer to =>
Exhaust System Exhaust System

Tightening Specifications