11.29
Installing valve and valve stem seal
L Note:
If a valve was removed, the valve stem seal must be
renewed.
•
Oil the stem when installing the valve.
•
Shrink a short length of tube (arrow) on to the end
of the valve stem.
•
Install the valve stem seal with a 5 mm (0.20 in)
dia. drift, BMW No. 11 5 602.
e Caution:
Remove the shrunk-on tube.
•
Fit lower spring plate, valve spring and upper
spring plate.
•
Compress the valve springs with the valve spring
clamp, BMW No. 11 5 690.
L Note:
Insert the taper valve collets using grease (to simpli-
fy assembly).
e Caution:
Ensure that valve collets are correctly seated in the
valve stem grooves.
•
Relieve tension on valve springs.
•
Check valves for leakage (blow-by).
11 5 690
RS110160
11 5 602
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