Section 03 ENGINE
Sub-Section 05 (TOP END)
03-05-9
1. Measuring perpendicularly (90
°
) to piston pin axis
2. Auxiliary transfer port
A. 16 mm (5/8 in)
Cylinder Out of Round
Using a cylinder bore gauge, measure cylinder di-
ameter at 16 mm (5/8 in) from top of cylinder.
Measure diameter in piston pin axis direction then
perpendicularly (90
°
) to it. If the difference be-
tween readings exceed specification, cylinder
should be rebored and honed or replaced.
1. Measuring in piston pin axis
2. Measuring perpendicularly (90
°
) to piston pin axis
A. 16 mm (5/8 in)
Piston/Cylinder Wall Clearance
PISTON MEASUREMENT
Used Piston
Using a micrometer, measure piston at 25 mm (1 in)
from skirt end perpendicularly (90º) to piston pin.
1. Measuring perpendicularly (90º) to piston pin axis
A. 25 mm (1 in)
Lock the micrometer to the obtained value.
New Piston
To determine the piston dimension, take the mea-
surement on the piston dome.
1. Piston dome
2. Piston measurement
Adjust and lock a micrometer to the specified val-
ue on the piston dome.
A
F01D8AA
1
2
A
F01D8BA
A
1
2
F01D0NA
1
A
F00D0EA
2 1
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