TM 9-6115-664-13&P
5-15. CYLINDER, PISTON, AND CRANKSHAFT MAINTENANCE
15.
Inspect surface of cylinder liner bore for scoring.
Replace cylinder if bore is scored.
16.
Inspect outside surface of piston walls for scoring.
Replace piston if scored.
17.
Measure cylinder dimensions L, M, N, O, and P.
Replace cylinder if any dimension is beyond limit.
a.
Dimension L = 108.990 to 108.995 mm (4.2942
to 4.2944 in.)
b.
Dimension M = 95.004 to 95.016 mm (3.7431 to
3.7436 in.)
c.
Dimension N = 115.850 to 115.940 mm (4.5645
to 4.5680 in.)
d.
Dimension O = 161.500 to 162.500 mm (6.3631
to 6.4025 in.)
e.
Dimension P = 103.793 to 103.880 mm (4.0894
to 4.0929 in.)
18.
Measure piston dimensions Q, R. Replace piston
if any dimension is beyond limit.
a.
Dimension Q = 95.113 to 95.127 mm (3.7474 to
3.7480 in.)
b.
Dimension R = 78.650 to 79.350 mm (3.0988 to
3.1264 in.)
19.
Inspect internal bore of piston (marked S on
figure) for scoring. Inspect external lip (marked T)
for damage. Replace piston is damaged in any
way.
20.
Using a feeler gage, measure the clearance
between wall of piston groove and top piston ring
(compression). Replace ring set (see REPAIR) if
clearance is greater than 0.037 mm (0.0015 in.).
Figure 5-9. Cylinder, Piston, and Crankshaft
(Sheet 4 of 5)
5-48
