BMW AG Motorcycle (K1100LT, K1100RS). Manual - part 21

21.13

Removing and installing clutch con-
trol rod

•

Remove rear wheel.

•

Remove exhaust system.

•

Remove clutch thrust bearing.

•

Remove clutch control rod (1) by pulling to the 
rear.

•

Install in the reverse order of removal.

LT210110

1

21.14

Removing and installing clutch 
release lever

•

Remove exhaust system.

•

Detach clutch cable at clutch release lever.

•

Remove retaining ring (4) and washer (3) on 
right-hand side.

•

Remove mounting pin (1) by pulling out to left.

•

Remove clutch release lever (2).

•

Install in the reverse order of removal.

L

 Note:

Check clutch clearance and adjust if necessary.

X 

Tightening torques:

Exhaust to cylinder head

.............................. 21 Nm

Exhaust holder to footrest plate

.................... 33 Nm

Exhaust retaining bracket to gearbox 

.......... 41 Nm

Front silencer

............................................... 12 Nm

LT210120

1

3

4

2

21.15

Troubleshooting

Clutch slips.

no

Check clutch clearance.
Is clutch clearance incorrect?

ja

Adjust clutch clearance. Replace clutch disc if 
necessary. 

no

Check clutch lining.
Is clutch lining oiled?

yes

Replace thrust ring on transmission input shaft. 

no

Renew clutch disc.

Is clutch lining worn?

yes

Renew clutch disc.

Clutch slips.

no

Check clutch adjustment.
Is clutch adjustment incorrect?

yes

Perform basic setting.

no

Check clutch disc.
Is clutch disc damaged/worn?

yes

Renew clutch disc.

Clutch does not release. 

no

Check clutch cable.
Is clutch cable broken?

yes

Renew clutch cable.

no

Check clutch control rod.
Is clutch control rod blocked? 

yes

Clutch thrust bearing damaged.
Renew clutch thrust bearing. 

21.16

Clutch operation difficult.
Clutch too harsh?

no

Check output shaft lubrication. 
Is output shaft not lubricated?

yes

Lubricate with Optimoly MP 3.

23.1

Contents

Page

23

Technical Data

............................................................................................................................... 3

Removing transmission (gearbox) 

......................................................................................5

Preparatory work

 .............................................................................................................................5

Removing starter

 .............................................................................................................................6

Removing bearing mount with main stand

 ..........................................................................7

Removing transmission (gearbox)

 ...........................................................................................8

Disassembling transmission (gearbox) 

............................................................................9

Removing transmission cover.

 ..................................................................................................9

Disassembling/assembling transmission cover

 ..............................................................10

Removing and installing bearing shell ................................................................................................10
Removing and installing shaft sealing ring on input shaft ...................................................................10
Removing and installing locking lever  ................................................................................................10

Removing gear selector drum

 .................................................................................................11

Removing gearshift forks

 ...........................................................................................................11

Removing transmission shafts

 ................................................................................................12

Removing pawl

 ...............................................................................................................................12

Removing selector shaft

 ............................................................................................................13

Removing segment

 ......................................................................................................................13

Removing and installing shaft sealing ring on input shaft

 ...........................................13

Removing and installing shaft sealing ring for gear selector drum

 .........................14

Removing and installing bearing shell for taper roller bearing on input shaft

 ....14

Removing and installing ball bearing on intermediate shaft

 ......................................14

Disassembling and assembling input shaft

 .......................................................................15

Disassembling input shaft  .................................................................................................................15
Assembling input shaft  ......................................................................................................................15

23 Gearbox

23.2

Contents

Page

Disassembling and assembling output shaft

 ....................................................................17

Removing ball bearing .......................................................................................................................17
Removing spur gears  ........................................................................................................................18
Installing spur gears  ..........................................................................................................................19

Installing transmission shafts

 ...................................................................................................20

Installing gearshift forks

 .............................................................................................................20

Measuring distances between transmission shafts

 .......................................................21

Measuring bearing distance of shafts  ................................................................................................21
Measuring transmission cover  ...........................................................................................................22

Installing transmission cover

 ....................................................................................................24

Installing transmission (gearbox) 

.......................................................................................25

Installing bearing mount with main stand

 ...........................................................................26

Installing starter

 .............................................................................................................................27

Re-assembling motorcycle ................................................................................................................28

23.3

23

Technical Data

K 1100 LT

K 1100 RS

Type of gearshift

5-speed transmission with dog-clutch engage-
ment and integrated damper for all gears

Type of gearshift

With adjustable gearshift pedal and gear selector 
drum with overshoot protection

Transmission ratio
1st gear
2nd gear
3rd gear
4th gear
5th gear

4.50
2.96
2.30
1.88
1.61

Oil grade

above

 5° C

below

 5° C

all year round

Brand-name hypoid gear oil, API class GL 5

SAE 90
SAE 80
SAE 80 W 90

Capacity

l (Imp.pt) 0.8 (1.408)

Axial clearance, 
intermediate shaft

mm (in) 0.05 ...0.15 (0.0019685...0.0059055)

Axial clearance, 
output shaft

mm (in) 0.05 ...0.15 (0.0019685...0.0059055)

Preload, input shaft

Preload

mm (in) = 

Coefficient friction Nm

0.03 (0.00118) =  0.19  ±  0.02
0.055 (0.00217)=  0.34  ±  0.02
0.08 (0.00315) = 10.50  ±  0.02 

23.4