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11.23
Removing valves
•
Screw support plate, BMW No. 11 1 749, for the
valve spring clamping tool on to the rear of the
cylinder head.
•
Attach valve spring clamping tool,
BMW No. 11 1 740.
•
Use pressure cage (1), BMW No. 11 1 748.
•
Place the cylinder head flat on a wooden board
and clamp the valve spring.
•
Pull valve collets (1) out with a magnetic screw-
driver.
•
Release valve spring (3) and remove the various
components.
•
Upper spring plate (2), lower spring plate (4).
•
Pull out the valve stem seal with pliers,
BMWNo.111250.
Remachining valve seat
D = valve diameter
B = valve seat width
•
When remachining, the correct width of the valve
seat must always be maintained.
L Note:
Machine the valve seat with turning tool,
BMW No. 11 0 500.
•
If the valve seat has been remachined, a new
valve must be installed.
LT110280
11 1 749
1
LT110290
11 1 740
2
1
3
4
LT110300
LT110310