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CAMSHAFT AND ROCKER ARMS
Rocker arms and rocker arm shafts
1. Inspect:
• Cam lobe contact surface a
• Adjuster surface 1
Wear/pitting/scratches/blue discoloration
→ Replace.
Measurement steps:
• Measure the inside diameter a of the rocker
arm holes.
Out of specification → Replace.
Inside diameter (rocker arm):
10.000 ~ 10.015 mm
(0.3937 ~ 0.3943 in)
<Limit>: 10.03 mm (0.3949 in)
• Measure the outside diameter b of the
rocker arm shafts.
Out of specification → Replace.
Outside diameter (rocker arm shaft):
9.981 ~ 9.991 mm
(0.3930 ~ 0.3933 in)
<Limit>: 9.95 mm (0.3917 in)
ASSEMBLY AND INSTALLATION
1. Apply:
• Molybdenum disulfide oil
(onto the camshaft cam lobe and rocker
arm hole)
• Engine oil
(onto the camshaft bearing)
2. Install:
• Rocker arms
• Camshaft 1
3. Apply:
• Engine oil
(onto the rocker arm shaft)
4. Install:
• Rocker arm shaft
4-22
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