BMW Motorcycle (R1100RT, R1100RS, R850/1100GS, R850/1100R). Manual - part 18

11.92

Adjusting valve clearances

•

Set piston to TDC on the ignition stroke.

•

Measure valve clearance with feeler gauge.

•

Correct valve clearance with adjusting screw and 
lock into position.

Valve clearances with engine cold (max. 35 °C): 
Inlet ......................................... 0.15 mm (0.0059 in)
Exhaust ................................... 0.30 mm (0.0118 in)

X

 Tightening torque:

Locknut .......................................................... 8 Nm

•

Check valve clearance again; it must be possible 
to insert the feeler gauge between valve stem 
and rocker with only slight resistance to move-
ment.

RS110980

11.93

Installing right cylinder head

Adjustment specification

e

 

Caution:

When assembling, always start with the right 
cylinder.

Right cylinder = at TDC on ignition stroke:
marks (arrows) on chainwheel/auxiliary shaft and 
chain sprocket/crankshaft are aligned.

•

Locate ignition-stroke TDC with insert pin, 
BMW No. 11 2 650, at hole in clutch housing 
and en-gine block.

Right cylinder = at TDC on ignition stroke
Locating pin (arrow) on right camshaft sprocket 
points downwards.
Mark (R or arrow) and tip of tooth on right camshaft 
sprocket is precisely aligned with mark X on timing 
gear carrier.

•

Check setting again with timing chain tensioner 
installed.

RS110961

X

RS110150

11.94

Installing left cylinder head

Adjustment specification

e

 

Caution:

When installing, always begin with the right cylin-
der.

Left cylinder = at TDC on ignition stroke:
Marks (arrows) on chainwheel/auxiliary shaft and 
chain sprocket/crankshaft point downwards.

•

Locate ignition-stroke TDC with insert pin, 
BMW  No. 11 2 650, at hole in clutch housing 
and in engine block.

Left cylinder = at TDC on ignition stroke:
Locating pin (arrow) on left camshaft sprocket points 
upwards.
Mark (R or arrow) and tip of tooth at left camshaft 
sprocket is aligned precisely with mark  X on timing 
gear carrier.

•

Check setting again with timing chain tensioner 
installed.

RS110963

X

RS110511

11.95

•

Install the end cover with an O-ring which is in 
good condition.

X

 Tightening torque:

M 6 screw ...................................................... 9 Nm

•

If necessary, reduce end play to a minimum by 
repositioning the bearings.

Rocker end float:
min. ....................................... 0.05 mm (0.00197 in)
max. ........................................ 0.40 mm (0.0157 in)

•

Install cylinder head cover.

e

 Caution:

Ensure that gaskets are properly seated. Gaskets 
and sealing face must be free from oil and grease

X

 Tightening torque:

Cover screw................................................... 8 Nm

•

Tighten air intake stub pipe.

X

 Tightening torque:

M 6 screw ...................................................... 9 Nm

RS110050

RS110100

RS110940

RS110440

11.96

Installing alternator mount cover

•

Place sliding sleeve, BMW No. 11 5 680, on 
crankshaft.

•

Apply 3-Bond 1209 to the sealing face (arrow), 
which must be clean and free from grease. 

•

Install alternator mount cover.

X

 Tightening torque:

M 8 screw .................................................... 20 Nm
M 6 screw ...................................................... 9 Nm

Installing magnetic gate/belt pulley

•

Install Hall-effect trigger plate (1).

•

Lock clutch housing with retaining device, 
BMW No. 11 5 640.

•

[from 1995 model year on] Prevent rotor (2) of 
Hall-effect gate from moving with (for example) 
Loctite instant adhesive at Poly-V belt 
pulley (3).

•

Install the Poly-V belt pulley.

e

 Caution:

Install the belt pulley lock (4) (from model year 1995 
on, rotor location at Hall-effect gate) at the groove/
crankshaft (5).

X

 Tightening torque:

Retaining screw for belt pulley ..................... 50 Nm

•

Install rotary breather pipe (3) with new sealing 
rings.

X

 Tightening torque:

Vent line to alternator mount cover
M 8 screw .................................................... 20 Nm
Banjo screw ................................................. 25 Nm

11 5 680

5

1

4

11 5 640

2

3

6

RS110450

u

11.97

Timing the ignition

•

Prevent clutch housing from moving with TDC 
insert pin, BMW No. 11 2 650.

•

Connect ignition tester, BMW No. 12 3 650, and 
adapter lead, BMW No. 12 3 652, to magnetic 
gate.

•

Turn the Hall-effect gate plate until the telltale 
lamp just goes out.

•

Tighten plate on Hall-effect trigger.

•

Remove the TDC insert pin.

11 2 650

TDC

RS110461

12 3 650

12 3 652

RS110460

11.98

Installing alternator

•

Install alternator.

Adjusting procedure for Poly-V belt:
Installation procedure for Poly-V belt:

•

Place Poly-V belt in position, tension, turn the 
engine over once and relieve belt tension.

Poly-V belt tensioning procedure:

•

Screw up hex nut (1) at adjusting screw (2) lightly 
by hand, (using no tools).

•

Tighten adjusting screw (2) with a torque wrench, 
fully tighten retaining nut (3), slacken adjusting 
screw and tighten screws fully. 

X

 Tightening torque:

Pre-tension Poly-V belt 
with adjusting screw....................................... 8 Nm
Alternatorto alternator support cover............ 20 Nm

•

Install front cover.

1

2

3

RS110480

RS110490

11.99

•

Install oil filter with oil filter wrench, 
BMW No. 11 4 650.

•

Insert and tighten oil drain plug with a new seal.

X

 Tightening torque:

Oil filter (sealing face lightly oiled)  ................ 11 Nm
Oil drain plug................................................ 32 Nm

•

Install spark plugs with spark plug wrench, 
BMW No. 12 3 510.

X

 Tightening torque:

Spark plug.................................................... 20 Nm

Installing engin

•

Work in reverse order to that stated for removal.

11 4 650

RS110950

12 3 510

RS000010