ENGINE
M6040, M7040, WSM
1-S78
Replacing Flywheel Housing Oil Seal
1. Remove the used oil seal.
2. Clean the new flywheel housing oil seal (2) and apply engine oil
to it.
3. Install the new oil seal (2) to the specific position using replacing
tool (1). (See page G-47.)
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Replacing Front Cover Oil Seal
1. Remove the used front cover oil seal.
2. Clean a new front cover oil seal (2) and apply engine oil to it.
3. Install the new oil seal (2) using replacing tool (1). (See page
G-46.)
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(5) Cylinder
Cylinder Wear
1. Measure the I.D. of the cylinder at the six positions (see figure)
with a cylinder gauge to find the maximum and minimum I.D.'s.
2. Get the difference (Maximum wear) between the maximum and
the minimum I.D.'s.
3. If the wear exceeds the allowable limit, bore and hone to the
oversize dimension.
4. Visually check the cylinder wall for scratches. If deep scratches
are found, the cylinder should be bored.
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(1) Flywheel Housing Oil Seal
Replacing Tool
(2) Oil Seal
(3) Flywheel Housing
A: 1.0 mm (0.039 in.)
(1) Front Cover Oil Seal Replacing Tool
(2) Oil Seal
(3) Front Cover
Cylinder Bore I.D
Factory specification
94.000 to 94.022 mm
3.7008 to 3.7017 in.
Allowable limit
94.15 mm
3.7067 in.
(A) Top
(B) Middle
(C) Bottom (Skirt)
(a) Right-angled to piston pin
(b) Piston pin direction
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