ARMY TM 9-2805-259-14
AIR FORCE TO 38G2-89-54
NAVY NAVFAC P-8-615-14E
Measurements
Item
Minimum
Maximum
CONNECTING RODS
Connecting rod bearing clearance
0.0004
0.0029
(0.0010)
(0.0074)
0.0140
Slide clearance
0.0060
(0.0152)
(0.0356)
1.4984
1.5004
Connecting rod bearing id
(3.8060)
(3.8100)
1.6240
1.6250
Connecting rod bearing od
(4.1200)
(4.1300)
Piston pin:
2.4850
Length
2.5000
(6.3100)
(6.3500)
Diameter
0.8591
0.8593
(2.1800)
(2.1826)
Piston pin clearance in bearing
0.0001
0.0006
(0.0003)
(0.0015)
PISTON:
Piston pin hole dia
0.8591
0.8594
(2.1800)
(2.1829)
Piston pin bushing od
0.9165
0.9185
(2.3279)
(2.3330)
Piston pin bushing id
0.8594
0.8597
(2.1714)
(2.1836)
Skirt od (A size)
2.9962
2.9972
(7.6103)
(7.6128)
NOTE: (B, C, and D size, .0005 larger)
Piston to cylinder clearance
0.0018
0.0033
(0.0046)
(0.0084)
Piston ring groove
Depth Top
2.6620
2.6520
(6.7361)
(6.7615)
2.6300
Second
2.6410
(6.6802)
(6.7081
Third
2.6310
2.6410
(6.6927)
(6.7081
6-20
