3-36
PISTON, CONNECTING ROD, CRANKSHAFT AND
CRANKCASE
a
b
SCF3590
a
P
CYLINDER INSPECTION
1. Measure:
9
Cylinder inside diameter
NOTE:
Take side to side
a
and front to back
b
mea-
surements at each of the three locations A, B,
C (total of six measurements), and then find
the average of the measurements.
Out of specification
→
Replace.
2. Measure:
9
Cylinder warpage
NOTE:
Measure the warpage on the contact surface
of the cylinder head at six points using a
straight edge and thickness gauge.
Out of specification
→
Replace.
PISTON AND PISTON PIN INSPECTION
1. Measure:
9
Piston skirt diameter
P
a
= 10 mm (0.4 in) from the piston bottom
edge
Out of specification
→
Replace.
ENG
Maximum wear = Maximum A, B, C.
Cylinder taper =
Maximum A – Minimum C.
Cylinder inside diameter:
66.00 ~ 66.02 mm
(2.5984 ~ 2.5990 in)
Cylinder inside diameter wear
limit:
66.020 mm (2.5990 in)
Cylinder taper limit:
0.05 mm (0.002 in)
Warpage limit:
0.05 mm (0.002 in)
Piston skirt diameter:
66.0 mm (2.598 in)
Wear limit:
65.9 mm (2.594 in)
7CF7E0-03 05.7.3 15:14 Page 36
