TM 5-3895-382-24
(4)
Diameter of the rod ...................14.00 mm (0.550 inch)
Dimensions for the center of diameter
(5)........................................................... 33 mm (1.3 inch)
(6)........................................................... 21 mm (.8 inch)
Crankshaft
SMCS Code: 1201
Illustration 42
Crankshaft and main bearing journals
NOTE:
If a crankshaft that was not originally induction
hardened
has
been
remachined,
then
the
crankshaft must be rehardened. Use one of the
process that follow for 20 hours in order to
reharden the crankshaft: nitrocarburizing process
and nitriding process.
(1)
Connecting rod bearing
(2)
Top and bottom thrust washer thickness
Standard .................................................... 2.26 to 2.31 mm
(.089 to .091 inch)
Oversize ..................................................... 2.45 to 2.50 mm
(.096 to .098 inch)
(3)
Main bearing clearance
All bearings ...........................................0.057 to 0.117 mm
(.0022 to .0046 inch)
Bearing width
Center bearing ..............................36.32 to 36.70 mm
(1.430 to 1.445 inch)
All other bearings .........................31.62 to 31.88 mm
(1.245 to 1.255 inch)
Thickness of the bearing at the center
All bearings ...................................2.083 to 2.086 mm
(.0820 to .0821 inch)
(4)
Crankshaft gear
(5)
End play of the crankshaft ...................... 0.05 to 0.38 mm
(.002 to .015 inch)
Maximum permissible end play.........................................0.51 mm
(0.020 inch)
(6)
Width of the connecting rod
journal ....................................................40.35 to 40.42 mm
(1.589 to 1.591 inch)
Connecting rod journal diameter of
flange .............................................................133.27 to 133.37 mm
(5.247 to 5.251 inch)
Depth of recess for connecting rod
bearing ...............................................................20.22 to 20.98 mm
(.796 to .826 inch)
Bore of recess for connecting rod
bearing ...............................................................46.96 to 46.99 mm
(1.849 to 1.850 inch)
Measure the connecting rod journals on the crankshaft. See
the following chart for the dimensions.
Table 5
Connecting Rod Bearing Journal
If the bearing journal has
63.43 mm (2.497 inch)
been ground beyond this
size, then regrind the
bearing journals to the
next undersize journal.
Original Size Journal
63.47 to 63.49 mm
(2.499 to 2.500 inch)
Undersize Journal
63.22 to 63.24 mm
0.25 mm (0.010 inch)
(2.489 to 2.490 inch)
Undersize Journal
62.96 to 62.98 mm
0.51 mm (0.020 inch)
(2.479 to 2.480 inch)
Undersize Journal
62.71 to 62.73 mm
0.76 mm (0.030 inch)
(2.469 to 2.470 inch)
Connecting rod bearings are available for remachined journals
with the following undersize dimensions:
Undersize..............................................................0.25 (.010)
Undersize .............................................................0.51 (.020)
Undersize .............................................................0.76 (.030)
(7)
Dimensions of main journals which are the standard,
original size
Width of front journal ...........................36.93 to 37.69 mm
(1.454 to 1.484 inch)
5-29
