1-S63
MX5100, WSM
ENGINE
Oil Clearance of Camshaft Journal
1. Measure the camshaft journal O.D. with an outside micrometer.
2. Measure the cylinder block bore I.D. for camshaft with a cylinder
gauge, and calculate the oil clearance.
3. If the oil clearance exceeds the allowable limit, replace the
camshaft.
W1031662
Oil Clearance between Idle Gear Shaft and Idle Gear Bushing
1. Measure the idle gear shaft O.D. with an outside micrometer.
2. Measure the idle gear bushing I.D. with an inside micrometer,
and calculate the oil clearance.
3. If the oil clearance exceeds the allowable limit, replace the
bushing.
If it still exceeds the allowable limit, replace the idle gear shaft.
W1030933
Replacing Idle Gear Bushing
(When removing)
1. Press out the used idle gear bushing using an idle gear bushing
replacing tool. (See page “SPECIAL TOOLS”.)
(When installing)
1. Clean a new idle gear bushing and idle gear bore, and apply
engine oil to them.
2. Press in a new bushing using an idle gear bushing replacing tool,
until it is flush with the end of the idle gear.
W1031083
Oil clearance of
camshaft journal
Factory spec.
0.050 to 0.091 mm
0.0020 to 0.0035 in.
Allowable limit
0.15 mm
0.0059 in.
Camshaft journal O.D. Factory spec.
39.934 to 39.950 mm
1.5722 to 1.5728 in.
Cylinder block bore I.D. Factory spec.
40.000 to 40.025 mm
1.5748 to 1.5757 in.
Oil clearance between
idle gear shaft and idle
gear bushing
Factory spec.
0.025 to 0.066 mm
0.00099 to 0.0025 in.
Allowable limit
0.10 mm
0.0039 in.
Idle gear shaft O.D. Factory spec.
37.959 to 37.975 mm
1.4945 to 1.4950 in.
Idle gear bushing I.D. Factory spec.
38.000 to 38.025 mm
1.4961 to 1.4970 in.
(A) When Removing (B) When Installing
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