ENGINE 3-35
CYLINDER
CYLINDER DISTORTION
Check the gasketed surface of the cylinder for distortion with a
straightedge and thickness gauge, taking a clearance reading at
several places as indicated. If the largest reading at any position
of the straightedge exceeds the limit, replace the cylinder.
Cylinder distortion
Service Limit: 0.05 mm (0.002 in)
09900-20803: Thickness gauge
CYLINDER BORE
Inspect the cylinder wall for any scratches, nicks or other dam-
age. Measure the cylinder bore diameter at six places.
Cylinder bore
Service Limit: 66.090 mm (2.6020 in)
09900-20508: Cylinder gauge set
PISTON
PISTON DIAMETER
Using a micrometer, measure the piston outside diameter at the
place shown in Fig. If the measurement is less than the limit,
replace the piston.
Piston diameter
Service Limit: 65.880 mm (2.5937 in)
09900-20203: Micrometer (50 – 75 mm)
PISTON-TO-CYLINDER CLEARANCE
As a result of the aforesaid measurement, if the piston-to-cylin-
der clearance exceeds the following limit, overhaul the cylinder
and use an oversize piston, or replace both cylinder and piston.
Piston-to-cylinder clearance
Service Limit: 0.12 mm (0.0047 in)
Piston oversize: 0.5
18 mm (0.71 in)
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