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5-16
THE ROCKER ARMS AND CAMSHAFT
EAS00206
CHECKING THE ROCKER ARMS AND
ROCKER ARM SHAFTS
The following procedure applies to all of the
rocker arms and rocker arm shafts.
1. Check:
8rocker arm (camshaft touch surface)1
8rocker arm (valve touch surface)2
Damage/wear J Replace.
2. Check:
8rocker arm shaft
Blue discoloration/excessive wear/pitting/
scratches J Replace or check the lubri-
cation system.
3. Check:
8camshaft lobe
Excessive wear J Replace the camshaft.
4. Measure:
8rocker arm inside diameter a
Out of specification J Replace.
Rocker arm inside diameter
10.000 ~ 10.015mm (0.3937 ~
0.3943in)
5. Measure:
8rocker arm shaft outside diameter a
Out of specification J Replace.
Rocker arm shaft outside diameter
9.981 ~ 9.991mm (0.3930 ~
0.3933in)
a
a
6. Calculate:
8rocker-arm-to-rocker-arm-shaft clearance
TIP
Calculate the clearance by subtracting the rocker
arm shaft outside diameter from the rocker arm
inside diameter.
1
2
2
1
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