Replacing Bearings of All Transmission Shafts

Replacing Bearings of All Transmission Shafts

-Transmission Removed-






Remove transmission case front section 23 11 014.

A) input shaft, layshaft in case front section:
Input shaft:
Drive out grooved ball bearing in direction of clutch housing.






Adjust axial play of input shaft.
Case front section attached.
Input shaft must be on synchromesh ring.
Measure distance (A) from guide sleeve
sealing surface to input shaft.






Measure distance (B) from guide sleeve
sealing surface to circlip bearing surface.







Measure distance (C) from bearing outer race to circlip.

Note: Circlip must be pressed tight in groove for measuring

Example:
A 25.3mm (0.996")
- B 10.1mm (0.398")
---------------------------
15.2mm (0.598")
- C 14.0mm (0.551")
---------------------------
1.2mm (0.047")

Axial play required 1.1 to 1.3 mm (0.043 to 0.051")
Different size circlips are available from parts.






Layshaft:
Destroy roller cage of bearing.
Remove cage with rollers.







Pull out bearing outer race (1) with Special Tools 00 8 550
(without supports) and 33 1 356.







Heat case front section in area of roller bearing to about 80°C (175°F)
with a hot air blower
Drive in roller bearing with Special Tool 23 2 220.







B) Output shaft, layshaft in case rear section
Remove input and output shaft assembly 23 21 504
Output shaft:
Remove Special Tool 23 2 170
Pull off leaf spring (1).







Unscrew bolts.
Take off clamps (2 and 3).

Installation

Install clamps with curved surface facing
the bearing outer race.
Tighten torque







Lift out radial oil seal
Drive out grooved ball bearing with
Special Tools 23 1 120 and 00 5 500.







Heat rear case section in area of the
grooved ball bearing to about 80°C (175° F)
with a hot air blower.
Install grooved ball bearing.
If applicable, drive in bearing to fit tight
with Special Tool 24 1 100.






Drive in radial oil seal with Special Tool 23 2 160.
Lubricate sealing lip with oil.







Layshaft:
Destroy roller cage of the bearing.
Remove cage with rollers.







Pull out bearing outer race (1) with Special Tools 00 8 550 and a support

Note:Use a piece flat iron or something similar between the support and sealing surface, to avoid damaging the sealing surface.







Heat rear case section in area of the roller bearing to about 80°C
(175°F) with a hot air blower.
Driver in roller bearing with Special Tool 23 2 220.