ENGINE
M6060, M7060, WSM
1-S63
Oil Clearance between Idle Gear Shaft and Idle Gear Bushing
1. Measure the idle gear shaft O.D. with an external micrometer.
2. Measure the idle gear bushing I.D. with an internal micrometer.
3. Calculate the oil clearance.
4. If the oil clearance is more than the allowable limit, replace the
bushing.
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Replacement of Idle Gear Bushing
(When removing)
1. Press out the used idle gear bushing with the replacing tool.
(When installing)
1. Clean a new idle gear bushing and idle gear bore, and apply
engine oil to them.
2. Press fit the new bushing with the replacing tool. Make sure that
the bushing end aligns the end of the idle gear.
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Side Clearance of Camshaft
1. Set a dial indicator with its point on the camshaft.
2. Move the cam gear (1) to the front and rear to measure the side
clearance.
3. If the measurement is more than the allowable limit, replace the
camshaft stopper.
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Camshaft Alignment
1. Hold the 2 end journals of camshaft (1) with V blocks on the
surface plate.
2. Set a dial indicator with its point on the middle journal.
3. Turn the camshaft (1) slowly and read the variation on the
indicator. (Half of the measurement)
4. If the measurement is more than the allowable limit, replace the
camshaft (1).
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Oil clearance between
idle gear shaft and idle
gear bushing
Factory specification
0.0250 to 0.106 mm
0.000985 to 0.00417 in.
Allowable limit
0.11 mm
0.0043 in.
Idle gear shaft O.D. Factory specification
46.959 to 46.975 mm
1.8488 to 1.8494 in.
Idle gear bushing I.D. Factory specification
47.000 to 47.065 mm
1.8504 to 1.8529 in.
(A) When Removing (B) When Installing
Side clearance of
camshaft
Allowable limit
0.10 mm
0.0039 in.
(1) Cam Gear
Camshaft alignment Allowable limit
0.01 mm
0.0004 in.
(1) Camshaft
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