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 TM 55-1905-219-14-5
3-58. ELECTRIC POWER GENERATION AND DISTRIBUTION (Cont)
TABLE OF SPECIFICATIONS NEW CLEARANCES AND WEAR LIMITS (Cont).
ENGINE PARTS
MINIMUM
MAXIMUM
LIMITS
(Standard Size, New)
(inches)
(cm)
(inches)
(cm)
(inches)
(cm)
Out-of-round-inside
diameter .......................................
.0020
.0051
.0025
.0064
Taper-inside diameter .........................
.0010
.0025
.0020
.0051
Depth of flange ...................................
.0450
.1143
.0500
.1270
.0500
.1270
Variation in depth between
adjacent liners ..............................
.0020
.0051
.0020
.0051
Insert thickness...................................
.1795
.4559
.1800
.4572
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
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
.0060
.0152
.0100
.0254
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
PISTON PINS (Trunk Pistons)
Length ..........................................
3.6050
9.1570
3.6200
9.1950
Diameter ......................................
1.4996
3.8090
1.5000
3.8100
1.4980
3.8050
Clearance-pin to piston.................
bearing...................................
.0025
.0064
.0034
.0086
.0100
.0254
Clearance-pin to cone. rod
bushing ..................................
.0015
.0038
.0024
.0061
.0100
.0254
3-1042
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