BMW Motorcycle (R1100RT, R1100RS, R850/1100GS, R850/1100R). Manual - part 34

33.1

Contents

Page

33

Technical Data

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

Rear wheel drive-sectioned drawing 

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

Removing, dismantling, reassembling and installing rear wheel drive 

..........9

Removing rear wheel drive 

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

Removing input bevel pinion 

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

Disassembling input bevel pinion 

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

Removing needle roller bearing for input bevel pinion  .......................................................................12
Installing needle roller bearing for input bevel pinion  .........................................................................12

Assembling input bevel pinion 

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

Installing input bevel pinion 

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

Removing and installing taper roller bearing in rear wheel drive 

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

Removing crown wheel 

..............................................................................................................16

Installing crown wheel 

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

Checking/adjusting backlash 

..................................................................................................18

Checking tooth contact pattern 

.............................................................................................19

Shimming housing cover 

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

Installing housing cover 

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

Installing splined element 

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

Installing rear wheel drive 

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

Removing, dismantling, reassembling and installing rear swinging arm 

....23

Removing rear swinging arm 

...................................................................................................23

Removing and installing taper roller bearing 

....................................................................23

Removing and installing flexible gaiter 

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

Removing drive shaft 

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

Checking universal joint for wear .......................................................................................................24

Installing drive shaft 

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

Installing rear swinging arm 

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

Removing and installing suspension strut 

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

33 Rear wheel drive

33.2

33.3

33

Technical Data

R 1100 RS

Rear wheel drive

Gear tooth pattern

Klingelnberg-Palloid spiral bevel

Gear ratios

up to 1993 model year
3.09 : 1

Number of teeth

34 : 11

from 1994 model year 
on
2.81 : 1

Number of teeth

31 : 11

Backlash

mm (in)

0.07...0.16 
(0.00276...0.0063)

Taper roller bearing preload

mm (in)

0.05...0.1 
(0.00197...0.03937)

Oil grades

Brand-name hypoid gear oil, SAE 90 GL 5

Filling capacity

Initial filling

l(Imp. pints)

0.25 (0.44)

Oil changes

l(Imp. pints)

0.23 (0.405)

Drive shaft

Layout

Two-piece drive shaft with integral torsional vibra-
tion damper enclosed in single swinging arm 
(BMW PARALEVER), universal joints at both 
ends, sliding joint at rear wheel drive end.

Swinging arm

Swinging arm length

mm (in)

355 (13.976)

Rear suspension

Suspension strut

Suspension strut with 
single-tube, gas-filled 
shock absorber, contin-
uously variable re-
bound-stage damping, 
seven spring preload 
settings.

Suspension travel

mm (in)

135 (5.315)

33.4

Technical Data

R 1100 RT

Rear wheel drive

Gear tooth pattern

Klingelnberg-Palloid spiral bevel

Gear ratios

Number of teeth

Number of teeth

2.91 : 1

32 : 11

Backlash

mm (in)

0.07...0.16 
(0.00276...0.0063)

Taper roller bearing preload

mm (in)

0.05...0.1 
(0.00197...0.03937)

Oil grades

Brand-name hypoid gear oil, SAE 90 GL 5

Filling capacity

Initial filling

l (Imp. pints)

0.25 (0.44)

Oil changes

l (Imp. pints)

0.23 (0.405)

Drive shaft

Layout

Two-piece drive shaft with integral torsional vibra-
tion damper enclosed in single swinging arm 
(BMW PARALEVER), universal joints at both 
ends, sliding joint at rear wheel drive end.

Swinging arm

Swinging arm length

mm (in)

355 (13.976)

Rear suspension

Suspension strut

Suspension strut with 
single-tube gas-filled 
shock absorber, contin-
uously variable re-
bound-stage damping 
and continuous hydrau-
lic spring preload.

Suspension travel

mm (in)

135 (5.315)

33.5

Technical Data

R 850 GS

R 1100 GS

Rear wheel drive

Gear tooth pattern

Klingelnberg-Palloid spiral bevel

Gear ratios

3.36 : 1

3.00 : 1

Number of teeth 37 : 11

33 : 11

Backlash

mm (in) 0.07...0.16 

(0.00276...0.0063)

0.07...0.16 
(0.00276...0.0063)

Taper roller bearing preload

mm (in) 0.05...0.1 

(0.00197...0.03937)

0.05...0.1 
(0.00197...0.03937)

Oil grades

Brand-name hypoid gear oil, SAE 90 GL 5

Filling capacity

Initial filling

Initial filling

l (Imp. pints) 0.25 (0.44)

0.25 (0.44)

Oil changes

Oil changes

l (Imp. pints) 0.23 (0.405)

0.23 (0.405)

Drive shaft

Layout

Two-piece drive shaft with integral torsional vibra-
tion damper enclosed in single swinging arm 
(BMW PARALEVER), universal joints at both 
ends, sliding joint at rear wheel drive end.

Swinging arm

Swinging arm length

mm (in) 355 (13.976)

355 (13.976)

Rear suspension

Suspension strut

Suspension strut with 
single-tube gas-filled 
shock absorber, contin-
uously variable re-
bound-stage damping 
and continuous hydrau-
lic spring preload.

Suspension strut with 
single-tube gas-filled 
shock absorber, contin-
uously variable re-
bound-stage damping 
and continuous hydrau-
lic spring preload.

Suspension travel

mm (in) 200 (7.874)

200 (7.874)

33.6

Technical Data

R 850 R

R 1100 R

Rear wheel drive

Gear tooth pattern

Klingelnberg-Palloid spiral bevel

Gear ratios

3.36 : 1

3.00 : 1

Number of teeth 37 : 11

33 : 11

Backlash

mm (in) 0.07...0.16 

(0.00276...0.0063)

0.07...0.16 
(0.00276...0.0063)

Taper roller bearing preload

mm (in) 0.05...0.1 

(0.00197...0.03937)

0.05...0.1 
(0.00197...0.03937)

Oil grades

Brand-name hypoid gear oil, SAE 90 GL 5

Filling capacity

Initial filling

Initial filling

l (Imp. pints) 0.25 (0.44)

0.25 (0.44)

Oil changes

Oil changes

l (Imp. pints) 0.23 (0.405)

0.23 (0.405)

Drive shaft

Layout

Two-piece drive shaft with integral torsional vibra-
tion damper enclosed in single swinging arm 
(BMW PARALEVER), universal joints at both 
ends, sliding joint at rear wheel drive end.

Swinging arm

Swinging arm length

mm (in) 355 (13.976)

355 (13.976)

Rear suspension

Suspension strut

Suspension strut with 
single-tube gas-filled 
shock absorber, contin-
uously variable re-
bound-stage damping 
and seven-position ad-
justable spring preload.

Suspension strut with 
single-tube gas-filled 
shock absorber, contin-
uously variable re-
bound-stage damping 
and seven-position ad-
justable spring preload.

Suspension travel

mm (in) 135 (5.315)

135 (5.315)

33.7

Rear wheel drive-sectioned drawing

RS339011

33.8