Motorcycle BMW R1150RT. Manual - part 50

23.24

23 31 

Shimming selector shaft

e

 Attention:

If the housing or the complete selector shaft is re-
placed, the selector shaft must be measured and 
shimmed.

•

Measure distance “A” from shouldered bushing 
to cover mating face.

•

Measure distance “B” from shouldered bushing 
to housing mating face.

•

Measure distance “C” from the shoulder on the 
selector shaft to the back of the sleeve.

•

Calculate endplay as follows:

A + B = D

D - C = E

E - thickness of spacer = endplay.

Endplay:
Selector shaft

........................... 0.1…0.3 mm (0.0039…0.0118 in)

R21230110

A

R21230180

B

KR230220

C

23.25

23 00 043 

Assembling gearbox

23 21 

Installing input, output and inter-

mediate shafts

•

Insert marked selector fork (1) into intermediate 
shaft (2).

•

Align input, output and intermediate shafts so 
that their gear teeth mesh and the selector fork is 
in the position illustrated.

L

 

Note:

This is necessary only if the shaft sealing ring is in-
stalled.

•

Push assembly sleeve, BMW No. 23 4 712, on 
to the input shaft splines.

•

Heat the bearing points in the cover
to 100…120 °C (212... 248 °F).

e

 Attention:

Check that the gearbox shafts are correctly seated.

•

Insert the input, output and intermediate shafts 
together.

•

Install the 1st/3rd and 2nd/4th shift forks.

R21230120

h

100…120

w

23 4 712

C230070

1

2

23.26

23 31 

Installing selector shaft

•

Place a spacer of correct thickness on the hous-
ing.

•

Install selector shaft (1), making sure that 
spring (2) is correctly positioned.

23 31 

Installing selector drum

•

Place a spacing washer of the correct thickness 
and the input-side thrust washer on selector 
drum (6) and secure with a small amount of 
grease.

•

Swing locking lever (8) toward the input shaft and 
install the selector drum.

•

Swing locking lever (8) towards selector drum (6), 
pull back guide plate (7) and engage it in the se-
lector drum.

•

Place shift forks (5, 10) in the guide tracks.

•

Install selector shafts (3).

•

Install torsion spring (9).

•

Install locking pin (11).

•

Place thrust washer (4) on the selector drum.

R21230130

2

1

R21230040

3

5

3

4

10

7

8

6

11

9

23.27

23 11  

Installing gearbox housing

•

Install the dowel pins in cover and in housing, but 
do not drive the pins fully home.

•

Install breather tube (1) in housing cover.

e

 Attention:

Clean and degrease the sealing faces.
The sealing compound sets within 30 minutes; with-
in this time, place the housing in position and tighten 
the securing screws.

•

Apply Loctite 574 sealing compound to the mat-
ing face of the cover.

•

Place assembly sleeve, BMW No. 23 4 732, on 
the output shaft.

•

Place slip-over sleeve, BMW No. 23 4 612, on 
the selector shaft.

•

Heat the bearing seats in the housing 
to 80…100 °C (176…212 °F) and place the hous-
ing on the cover.

R21230140

1

23 4 732

23 4 612

R21230030

h

80 …100

w