3-18 ENGINE
ENGINE COMPONENTS INSPECTION AND SERVICE
CYLINDER HEAD COVER
#
DISASSEMBLY
• Remove the inspection caps
1.
• Remove the rocker arm shaft bolts
2.
• Remove the rocker arm shafts
3.
• Remove the rocker arms
4 and wave washers
5.
CYLINDER HEAD COVER DISTORTION
After removing sealant from the fitting surface of the cylinder
head cover, place the cylinder head cover on a surface plate
and check for distortion with a thickness gauge. Check points
are shown in Fig.
$ Cylinder head cover distortion
Service Limit: 0.05 mm (0.002 in)
& 09900-20803: Thickness gauge
If the distortion exceeds the limit, replace the cylinder head
cover.
ROCKER ARM SHAFT O.D.
Measure the diameter of the rocker arm shafts.
$ Rocker arm shaft O.D.
Standard (IN. & EX.):
11.977 – 11.995 mm (0.4715 – 0.4722 in)
& 09900-20205: Micrometer (0 – 25 mm)
Identify the position of each removed part. Organize
the parts in their respective groups (i.e., intake or
exhaust) so that they can be installed in their original
locations.
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