Valve Guides, Inspection
Tools:
9989876 Dial indicator
9999696 Magnetic stand
Cylinder head removed
Refer to removal in
21-1, Cylinder Head, Change
.
1
Remove the valve stem seals from the valve
guides.
2
IMPORTANT!
The cylinder head must not be put down so its
entire weight rests on the valve guides (see illus-
tration).
Put the cylinder head on the bench with the valve
discs facing upwards.
3
Place a new valve in the valve guide with the
valve stem end in the same plane as the edge of
the guide. Use a suitable counterhold under the
valve stem.
4
Place tool 9989876 Dial indicator and tool
9999696 Magnetic stand, so that the dial indicator
tip is touching the valve disc edge.
Move the valve sideways, in the direction of the
exhaust or inlet duct. Read off the value on the
dial gauge.
5
Check all valve guides.
If the measurement values exceed the values
noted in the specifications, the valve guide must
be changed; refer to
Technical Data page 27
.
p0005207
999 9696
998 9876
21-4 Valve Mechanism
188
7748841 06-2010
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