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 TM 55-1905-219-14-5
3-96.1. PISTON - MAINTENANCE INSTRUCTIONS (Cont).
LOCATION
ITEM
ACTION
REMARKS
REASSEMBLY (Cont)
ENGINE PARTS
MINIMUM
MAXIMUM
LIMITS
(Standard Size, New)
(inches)
(cm)
(inches)
(cm)
(inches)
(cm)
Piston:
Height (centerline of
bushing to top) .......................
3.5430
8.9992
3.5480
9.0119
Diameter (above compres-
sion rings) ..............................
4.2225
10.7252
4.2255
10.7328
Diameter (at skirt).........................
4.2428
10.7767
4.2450
10.7823
Clearance--piston skirt-
to-liner ..........................................
.0045
.0114
.0083
.0211
.0120
.0305
Out-of-round.................................
.0005
.0013
Taper ..........................................
.0005
.0013
Compression rings:
Gap (top-fire ring) ........................
.0230
.0584
.0380
.0965
.0600
.1524
Gap (No. 2, 3 and 4).....................
.0180
.0457
.0430
.1092
.0600
.1524
Clearance--ring-to-groove:
No. 1 (top-fire
ring) ......................................
.0040
.0102
.0070
.0178
.0180
.0457
No. 2 ...........................................
.0100
.0254
.0130
.0330
.0220
.0559
No. 3 and 4 ..................................
.0040
.0102
.0070
.0178
.0130
.0330
Oil control rings:
Gap .............................................
.0080
.0203
.0230
.0584
.0430
.1092
Clearance ....................................
.0015
.0038
.0055
.0140
.0080
.0203
2. A new cylinder liner
has an inside diam-
eter of 4.2495 to
4.2511 inch (10.7937
to 10.7978 cm). The
piston-to-liner clear-
ance, with new parts,
will vary with the
particular piston di-
ameter. A maximum
clearance of .012
inch (0.031 cm) is
allowable with used
parts.
3-1653
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