| Tweet |
Custom Search
|
|
|
||
 TM 55-1905-220-14-7
3-171.1. PISTON - MAINTENANCE INSTRUCTIONS (Cont).
LOCATION
ITEM
ACTION
REMARKS
REASSEMBLY ( Cont )
Refer to the Table for
piston diameter speci-
fications.
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 -f i re ..................
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 diameter of
4.2495 to 4.2511 inch ( 10.7937-10.7978 cm).
Piston-to-liner clearance, with new parts, will
vary with the particular piston diameter. A
maximum clearance of .012 inch (0.030 cm)
is allowed with used parts.
3-2887
|
||
|
||
