ENGINE
M6040, M7040, WSM
1-S68
Replacing Idle Gear Bushing
(When removing)
1. Using an idle gear bushing replacing tool, press out the used
bushing. (See page G-44.)
(When installing)
1. Clean a new idle gear bushing and idle gear bore, and apply
engine oil to them.
2. If the measurement exceeds the allowable limit, replace the idle
gear bushing.
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Camshaft Side Clearance
1. Set a dial indicator with its tip on the camshaft.
2. Measure the side clearance by moving the cam gear to the front
and rear.
3. If the measurement exceeds the allowable limit, replace the
camshaft bearing.
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Camshaft Alignment
1. Support the camshaft (1) with V block on the surface plate and
set a dial indicator with its tip on the intermediate journal at right
angle.
2. Rotate the camshaft on the V blocks and get the misalignment
(half of the measurement value).
3. If the misalignment exceeds the allowable limit, replace the
camshaft.
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Cam Height
1. Measure the height of the cam at its highest point with an
outside micrometer.
2. If the measurement is less than the allowable limit, replace the
camshaft.
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(A) When Removing (B) When Installing
Side clearance of
camshaft
Allowable limit
0.10 mm
0.0039 in.
(1) Cam Gear (A) Side Clearance of Camshaft
Camshaft alignment Allowable limit
0.01 mm
0.00039 in.
(1) Camshaft
Intake and exhaust cam
height
Factory
specifica-
tion
Intake
valve
37.50 mm
1.4764 in.
Exhaust
valve
37.90 mm
1.4921 in.
Allowable
limit
Intake
valve
37.00 mm
1.4567 in.
Exhaust
valve
37.40 mm
1.4724 in.
(1) Camshaft (2) Cam
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