Renewing front and rear oil seals for intermediate shaft — AUDI

Special tools and workshop equipment required

Thrust piece 3331

Thrust piece 3334

Removing

Gearbox removed

Remove torque converter.

Secure gearbox to repair stand
=> Page
37-49
.
Drain ATF => Page
37-55
.
Drain gear oil in front final drive => page
39-2
.
Remove centre bolt -arrow- for right flange shaft by screwing two bolts into flange shaft and bracing with a suitable lever.
Pull out right flange shaft.

Loosen securing bolts -arrow- for differential cover using diagonal sequence and remove bolts.
Remove differential cover.

Note:

When removing differential cover, secure differential to prevent it from falling out.

Take out differential with inner races for taper roller bearings. Leave the outer races in place.

Notes:

When removing, ensure that taper roller bearing outer race and shim behind bearing race do not drop out.
The shim has a measured thickness, and must not be exchanged with a shim of different thickness.

Remove torque converter oil seal => Page
32-3
.
Bring gearbox into a vertical position with torque converter bellhousing facing up.
Unscrew bolts for torque converter bellhousing.

Note:

Loosen inaccessible bolts using Hazet tool 3432 (or other suitable commercial tool).

Lever off torque converter bellhousing over input shaft and put down on a clean surface.

Lever out oil seal for final drive with a screwdriver.

Note:

Take care not to damage the peened securing point for the slotted nut behind the seal.

Unbolt protective tube -arrow-.
Push out intermediate shaft.

Note:

If there is visible scoring on the intermediate shaft, renew the intermediate shaft together with oil seals.

Lever out oil seal for transfer gearing with a screwdriver.

Note:

Do not damage seating surfaces for oil seal.

Installing

Install in reverse sequence; note the following points:

Drive in oil seal onto stop with thrust piece 3334.

Drive in oil seal onto stop with thrust piece 3331.

Renew gasket for torque converter bellhousing.

Renew square-section rings on input shaft (apply Vaseline when fitting).

Note:

Use only Vaseline; other types of grease will cause malfunctions in the hydraulic gearbox actuators.

Stick shim for axial bearing -1- on stator shaft (on inside of torque converter bellhousing) with Vaseline.
Fit axial bearing -1- in flared washer.
Position of washer: flared side towards axial bearing.

Guide torque converter bellhousing over input shaft (keep housing straight - 2nd mechanic required).

Caution
If the torque converter bellhousing is not kept straight when installing, this will shear off the square-section rings. If this happens, the gearbox will still transmit power in selector lever position "N".
If necessary, turn the drive pinion shaft slightly in both directions until the torque converter bellhousing is fully seated.
Insert differential into gearbox housing.

Install differential cover with new O-ring and tighten securing bolts -arrow- in diagonal sequence.
Install torque converter oil seal
=> Page
32-4
.
Install right-hand flange shaft with oil seal
=>Page
39-16
.
Top up ATF => Page
37-55
.
Fill front final drive of automatic gearbox with gear oil and check oil level => page
39-2
.

Tightening torque

Component · Nm
Protective tube to gearbox housing · 8
Torque converter bellhousing to gearbox housing · / 45
Differential cover to gearbox housing · / M8 · / 25