TM 9-6115-604-34
NAVFAC P-8-633-34
END GAP
RING
WEAR LIMIT
NEW MIN.
NEW MAX.*
LOCATION
INCH (mm)
INCH (mm)
INCH (mm)
TOP
0.052 (1.32)
0.025 (0.64)
0.040 (1.02)
INTERMEDIATE
0.052 (1.32)
0.025 (0.64)
0.040(1.02)
OIL CONTROL
0.042 (1.07)
0.01 5 (0.38)
0.030 (0.76)
*WHEN INSTALLING NEW PISTON RINGS IN USED CYLINDER LINERS, ADD 0.003 INCH (0.08mm) TO NEW MAX
END GAP FOR EACH 0.001 INCH (0.03 mm) OF CYLINDER LINER WEAR.
Figure 9-30. Piston Ring End Gap
CAUTION
To avoid breakage or failure of new piston rings, check each piston ring end gap before Installing
them on the piston. Do not file or stone the end gap on chrome plated rings If the end gap Is
below minimum specifications, select fit a new ring.
(a)
Check the end gap (Figure 9-30) of new piston rings in accordance with step (1 4)(d), above. If necessary,
select fit new rings to achieve the proper end gap.
9-55
