11.52
Checking/adjusting valve clear-
ances
e Caution:
Never unscrew the spark plugs before measuring
valve clearances. Particles of oily soot could be-
come lodged behind an exhaust valve head and fal-
sify the measurement.
•
Remove left side section of fairing.
•
Remove the cylinder head cover.
•
Remove cover for Hall-effect transmitter.
•
Turn the engine only at the crankshaft (direction
of rotation: anti-clockwise).
•
Measure valve clearance with feeler gauge.
•
Max. engine temperature 35 °C.
•
Determine size of replacement tappets by com-
paring desired and actual measurements.
Valve clearances:
Inlet.....................0.15…0.20 mm (0.006…0.008 in)
Exhaust ...............0.25…0.30 mm (0.010…0.012 in)
Adjusting valve clearances
•
The camshaft must be removed before the buck-
et tappets can be renewed.
•
Set cylinder 1 (timing end) to top dead centre on
the ignition stroke.
•
The adjusting device for the camshafts,
BMW No. 11 3 700, must enter the slots at the
end of the shafts.
•
Remove the screw plug in the timing case cover.
•
Hold the chain tensioner and timing chain with
eccentric tensioner, BMW No. 11 2 640.
•
Pull back tensioning pin (1) and screw in eccen-
tric (2) by 3…4 turns.
•
Push the tensioning pin forward above the timing
chain.
•
Turn the eccentric slightly to the right to locate
the timing chain and chain tensioner.
•
Secure the eccentric with locknut (3).
•
Remove the chain sprockets.
•
Remove the camshafts.
•
Renew the bucket tappets as necessary.
•
Assemble in the reverse order of work.
11 3 700
LT110800
1
2
3
LT110800
To Next Page
Loading...
Need help?
General
