14
(2) Clearance between rocker arm and rocker arm
shaft
a. Measure the rocker arm bore.
b. Measure the clearance between the rocker arm
and rocker arm shaft, and replace if the service
limit is exceeded.
Clearance between rocker arm and rocker arm shaft
(mm)
Standard assembling value Service limit
0.032 – 0.068 0.2
(3) Inspection of rocker arm
Check the valve cap-contact surface for uneven wear
and streaks. Correct the curved surface with an oil
stone or grinder correctly if insignificant.
Reassembly
Reassembly parts reversely to disassembly.
2) Cylinder head ass’y
Disassembly
(1) Compress the valve spring with a valve spring
replacer and remove the valve cotter, retainer, spring
and valve.
(2) Remove the valve guide seal, if required.
Inspection and service
(1) Distortion of cylinder head bottom surface.
Apply a straight edge to the bottom surface of the
cylinder head, and insert a thickness gauge at 6 points
from A to F in the right figure and measure distortion.
If the distortion exceeds the repair value, correct with
surface grinder or the like.
Distortion at cylinder head bottom surface (mm)
Standard assembling value Repair value
Less than 0.05 0.12
011X
013X
1. Valve 4. Valve cotter
2. Spring 5. Valve guide seal
3. Retainer
014X
015X
To Next Page
Loading...
