CHECKING OIL CLEARANCE BETWEEN ROCKER ARM SHAFT AND BUSHING
1.
Measure the rocker arm
1.0.
2.
Measure the rocker arm
0.0.
3.
If the clearance exceeds the allowable limit, replace. See engine specifications.
CHECKING
TOP
CLEARANCE
1.
Remove the nozzle holder.
2.
Lower the piston
in
the cylinder
to
be
measured.
3.
Insert a high-quality fuse from the nozzle holder hole.
Be
careful not to let the fuse touch the
valve surface.
4.
Rotate the engine with your hand.
5.
Take
the fuse out carefully.
6.
Measure the place where the fuse was crushed with vernier calipers.
7.
If the clearance is not within the reference value, adjust by inserting a shim between the
cylinder head and the gasket.
Reference value
0.6
to
0.8
mm
0.0236 to 0.00315 in.
Thickness of gasket
1.05 to
1.15
mm
when tightened
0.0413
to 0.0453 in.
Thickness of gasket shim
0.20 mm
0.0079
in.
111
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