Content .. 1 2 3 4 ..

BMW AG Motorcycle (K1100LT, K1100RS). Manual - part 3

00.19

Checking increased starting speed
(choke) and adjusting if necessary

Inspections I, III

Checking increased starting speed

•

Remove the left battery cover.

•

Move the increased starting speed device up to
its limit stop (stage 2).

Caution:

Screw (2) is secured with lacquer and must not be
reset.

Note:

Stop face (1) must make contact with screw (2) and
the wire cable must have zero play; failing this, cable
play must be adjusted.

•

Check stop face (1).

•

Move the increased starting speed device up to
its limit stop (stage 2).

•

Loosen locknut (3).

•

Press the lever with stop face (1) against screw
(2).

•

Turn adjusting screw (4) to obtain zero play in the
cable.

•

Tighten locknut (3).

LT130030

00.20

Checking valve clearance and
adjusting if necessary

Inspections I, III

Caution:

Never unscrew the spark plugs before measuring
the valve clearance. Carbon particles may settle be-
hind an exhaust valve head and falsify the measured
result.

•

[RS] Remove bottom section of fairing .

•

Remove left side section of fairing.

•

Remove cylinder head cover.

•

Remove cover for Hall generator.

•

Only crank engine at the crankshaft (counter-
clockwise!).

•

Measure valve clearance with feeler gauge.

•

Max. engine temperature 35 °C.

•

Determine the replacement tappet by way of
nominal/actual value comparison.

Valve clearance:
Inlet .................0.15 - 0.20 mm (0.0059 - 0.0079 in)
Exhaust ...........0.25 - 0.30 mm (0.0098 - 0.0118 in)

Adjusting valve clearance

•

The camshafts must be removed in order to
change the bucket tappets.

•

Set cylinder No. 1 (timing end) to ignition TDC.

•

The setting device for the camshafts,
BMW No. 11 3 700, must fit in the slots at the
ends of the shafts.

•

Unscrew screw plug in chain case cover.

•

Lock chain tensioner and timing chain in position
with eccentric tensioner, BMW No. 11 2 640.

•

Pull back clamping pin (1), screw in eccentric pin
(2) by 3-4 turns.

•

Push in clamping pin above the timing chain.

•

Fix timing chain and chain tensioner in position
by slightly turning eccentric pin in clockwise di-
rection.

•

Secure eccentric pin with locknut (3).

Removing sprockets

•

Release retaining bolts of sprockets and remove
sprockets.

Removing camshafts

•

Remove chain guide from stud bolt.

•

First remove thrust bearing of camshafts to avoid
misalignment.

•

Remove remaining camshaft bearings and lift out
camshaft.

•

Remove bucket tappets to be changed with relay
pliers BMW No. 61 1 250, or a magnet.

11 3 700

LT000190

11 2 640

LT000200

LT000210

00.21

Note:

Only the bucket tappets replaced during the
1000 km (600 miles) inspection can be re-used.

Installing camshafts

•

The camshafts are marked to ensure they cannot
be confused.

Caution:

Camshaft identification.
Inlet: Groove after the thrust bearing
Exhaust: No groove

•

The camshaft bearing caps are also identified.
Inlet side: Odd numbers
Exhaust side: Even numbers

•

The order is ascending from the front (timing end)
to the rear.

•

Install camshafts with the bearing points slightly
oiled.

•

Evenly tighten bearing cap working from the in-
side towards the outside.

•

Install thrust bearing (timing end) last.

Tightening torque:

Bearing cap................................................... 9 Nm

•

Turn camshafts so that the grooves at the rear
ends are positioned vertically with respect to the
cylinder head.

•

The grooves at the front end must face the inside
towards the crankshaft.

•

Fit setting device, BMW No. 11 3 700, and se-
cure to the bearings of the camshaft.

Installing sprockets

•

Install lower sprocket (1) together with chain and
chain guide (2); the pin on the sprocket must en-
gage in the groove on the camshaft.

•

When installed, the marking (triangle) on the
sprocket must face upward.

•

Then install the upper sprocket (3) with chain.

•

Initially, only tighten sprocket retaining bolts
hand-tight.

Caution:

Remove setting device before finally tightening the
sprockets, otherwise the camshafts will be dam-
aged.

•

Remove eccentric tensioner.

•

Firmly tighten sprockets while holding at the hex-
agon on the camshaft.

Tightening torque:

Sprocket to camshaft .................................. 54 Nm

•

Check valve clearance once again.

11 3 700

LT000190

LT000210

00.22

Installing cylinder head cover

•

Screw fitted bolt, BMW No. 11 1 980, (arrow)
into inner hole at the front.

•

Press centring pin, BMW No. 11 1 990, with
gripper, BMW No. 00 5 500, into locating hole
under the third camshaft bearing.

•

Insert gasket into cylinder head cover.

Note:

Begin installation at the crescents (1).

•

The marks (arrows) on the cover and gasket
must agree at the front and rear.

•

First press in the crescent at the rear (transmis-
sion end).

•

Lightly coat the gasket groove and the crescent
areas in the cover with oil to facilitate installation.

•

Apply a little 3-bond 1209 in the joint area at the
top and bottom chain case cover - cylinder head
(surfaces free of grease).

•

Fit cylinder head cover with gasket over the cen-
tring tools onto the cylinder head.

•

Screw in all retaining bolts such that they are still
not under preload.

•

Firmly tighten retaining bolts crosswise working
from the inside towards the outside.

•

Remove fitted bolt and centring pin, screw in last
retaining bolt and firmly tighten.

Tightening torque:

Cylinder head cover to cylinder head ............ 9 Nm

11 1 980

LT000230

11 1990

LT000240

00.23

Checking steering bearing play and
adjusting if necessary

Inspection III

•

Place a piece of adhesive tape (arrow) on the fork
bridge above the setting ring (1).

•

Mark current position of setting ring (1) on the
adhesive tape and on the setting ring (2).

•

Slide thrust ring (3), BMW No. 31 4 890, over the
locking tube (4).

•

Lock thrust ring with hexagon nut (5) while hold-
ing the locking tube.

•

Using the hexagon nut, turn back the setting ring
a little then firmly tighten to the specified setting
torque.

Setting torque:
Hexagon nut ............................................... 12 Nm

New bearing:
Pretighten hexagon nut to ............................ 25 Nm
Move steering several times from stop to stop,
loosen hexagon nut and retighten ................ 12 Nm

•

Mark new position of setting ring on adhesive
tape.

•

Loosen hexagon nut and remove thrust ring.

•

Firmly tighten locking tube, firmly tighten hexa-
gon nut.

Note:

The position of the setting ring must no longer
change!

•

The position of the setting ring must no longer
change!

•

Firmly tighten clamping screws.

Tightening torque:

Locking tube ................................................ 65 Nm
Hexagon nut ................................................ 65 Nm
Clamping screws of fork bridge (6) ............... 15 Nm
Clamping block for handlebar ...................... 22 Nm

LT320110

31 4 890

LT320120

00.24

Lubricating guide pins, adjustable
screen

Inspections III, IV

•

Release retaining screw (1) on both sides.

•

Slightly raise plate (2).

•

Spray guide pins (3) with silicone spray.

LT000260

00.25

Checking idle speed, synchronising
and CO value and adjusting if nec-
essary

Inspections I, II, III, IV

Note:

The basic settings (ignition, valve clearance) must
be correct.

Adjusting idle speed

•

Remove knee pad.

•

Remove left side section of fairing.

•

Remove caps (1) at the vacuum connections.

•

Connect hoses of the synchrotester,
BMW No. 13 0 800, in the specified order (note
markings 1 - 4 on tester housing).

•

Connect tester to motocycle’s power socket with
the corresponding adapter lead.

•

Start engine and allow to run for app.10 minutes
if not already warm.

Caution:

Max. idling time at a standstill = 20 minutes.

•

Run the engine at idle speed.

•

Select “bar diagram” display with maximum
resolution.

Note:

If the differences between the individual bars (col-
umns) is very large (more than 2 - 5 mm) switch over
to curve display and compare the individual cylin-
ders with each other; perform defect diagnosis if
necessary.

•

Rectify defects.

Caution:

The throttle butterfly adjusting screws (2) are sealed
with lacquer and must not be turned.

•

Adjust synchronisation at idle speed by turning
the air control screws (3) until the bars/curves are
at the same height, then adjust idle speed.

Idle speed........................................... 950 ± 50 rpm

LT000280

00.26

Adjusting CO value without catalytic converter

Note:

Engine must be at operating temperature (85 °C).
The basic settings (ignition, valve clearance) must
be correct.

•

Insert test probe (arrow) approx. 30 cm into the
silencer.

Caution:

Do not take this measurement in an enclosed
space; risk of asphyxiation.

Note:

If unsuitable air extraction equipment is used, it may
falsify the reading.

•

Run the engine at idle speed.

Caution:

Adjusting screw (2) has no limit stop in both direc-
tions.

•

Turn adjusting screw (2) to vary the CO value.

Note:

Turn in direction (1) for a richer mixture; the CO value
will rise towards its maximum value. Turning further
in direction (1) will not vary the CO value any further.
Turn in direction (3) for a leaner mixture; the CO val-
ue will drop to a minimum. Turning further in direc-
tion (3) causes the engine’s emergency-run
programme to operate and has no influence on the
CO value.

Caution:

If the engine’s emergency-run programme comes
into operation, fault 1111 will be memorised by the
engine control unit.

•

If necessary, perform fault diagnosis, rectify the
fault and cancel the memory entry.

•

Using the BMW synchrotester, adjust idle speed
at the recirculating-air screws.

CO value ..........................................1.5 ±0.5 Vol.%
Idle speed ..........................................950 ± 50 rpm

LT000290

LT000300

Content .. 1 2 3 4 ..