13-8
2. INSPECTION
• PISTON SKIRT O.D.
1) Check the piston outer surface for damage (scores,
scratches, etc.). Check the piston for warpage and cracks.
2) Measure and record the piston O.D. at a point 11 mm from
the bottom, and 90˚ to the piston pin bore.
• CYLNDER SLEEVE I.D.
1) Check the inner wall of the cylinder for damage (scores,
scratches, etc.).
2) Measure and record the cylinder I.D. at three levels in both
X and Y axis. Take the maximum reading to determine the
cylinder I.D.
• PISTON-TO-CYLINDER CLEARANCE
11 mm
(0.4 in)
[1]
O.D.
90˚
[5]
NO.1 CYLINDER
[4]
NO.4 CYLINDER
[1]
TOP
[2]
MIDDLE
[3]
BOTTOM
[1]
TOP
[2]
MIDDLE
[3]
BOTTOM
X
Y
STANDARD
SERVICE LIMIT
A
86.98 – 86.99 mm
86.93 mm
(3.4244 – 3.4248 in)
(3.4224 in)
B
86.97 – 86.98 mm
86.92 mm
(3.4240 – 3.4244 in)
(3.4220 in)
STANDARD
SERVICE LIMIT
A or l
87.01 – 87.02 mm
87.07 mm
(3.4256 – 3.4260 in)
(3.4279 in)
B or ll
87.00 – 87.01 mm
87.07 mm
(3.4252 – 3.4256 in)
(3.4279 in)
STANDARD
SERVICE LIMIT
0.02 – 0.04 mm
0.05 mm
(0.001 – 0.002 in)
(0.002 in)
• CYLINDER SLEEVE I.D. GAP BETWEEN TOP AND
BOTTOM
Determine the gap of the cylinder sleeve I.D. between the top
and the bottom measurements.
SERVICE LIMIT
0.05 mm (0.002 in)
