Vehicles after change point in 1982
REPLACING SHAFT SEAL FOR
FINAL DRIVE INPUT FLANGE
Remove final drive - see 33 10 010.
Mount final drive on Special Tool 33 1 010.
Drain oil. Take off case cover.
Installation:
Replace gasket. Tightening torque*.
Add oil. Oil volume*.
See Service Information of Group 00 for
approved oil.


33 10 010
* See Specifications

Remove lockplate.

Press off drive flanges with a tire iron.

Punch mark both bearing caps.
Remove both bearing caps.
Important!
Don´t mix up bearing caps and spacers.
If necessary, tie spacers on bearing caps with
pieces of wire.
Installation:
Tightening torque*.


* See Specifications

Differential case bearings and backlash are
adjusted with shims (1).
Check O-ring (2), replacing if necessary.

Remove differential assembly.
Important!
Don´t bend pulse spider!

Measure friction torque with torque meter
00 2 000 and note value.
Important!
The measured frictiion torque value + friction
torque of new shaft seal (20 Ncm/1.7 in.lbs.)
must be reached when assemblind, but not
exceeded.

Hold input flange with Special Tool 23 0 020
and unscrew collar nut.
Installation!
Tightening torque*.


* See Specifications

Pull off input flange with Special Tool
33 1 150.

Pull out shaft seal with Special Tool 00 5 010
and thrust piece.

Dip shaft seal in final drive gear lube and drive
in seal flush with Special Tool 33 1 270 or
33 1 190.

Press new input flange on to input shaft with
Special Tool 23 1 300, and adapter 33 1 341,
od not tighten.
The bushing does not have to be replaced when
replacing the input flange.

Tighten input flange with the collar nut in
steps, measuring the friction torque between
steps.

Adjust drive pinion bearing to friction torque
value measured prior to disassembling and add
20 Ncm (2 in.lbs.) for new shaft seal.
Example:
Measured torque................. 160 Ncm (14 in.lbs.)
New shaft sea...................l + 20 Ncm (2 in.lbs.)
_____________________________________
Pinion bearing adjusted to... 180 Ncm (16 in.lbs.)

If fircition torque value (see example) is exceeded,
replace bushing (2) and repeat measuring
procedures.
This requires removing and installing drive
pinion - see 33 12 551.
Installation:
Drive in new lockplate with Special Tools
33 4 050 and 00 5 500.


33 12 551

Installation:
Install complete differential again, checking for
correct installation of bearing caps.
Tighten bearing caps uniformly.
If applicable, check backlash and tooth contact
pattern.
See 33 12 551 for additional information.


33 12 551