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 TM 10-3930-638-24&P
4-2. ENGINE MAINTENANCE (cont)
d. Crankshaft and Main Bearings (cont).
REMARKS
ACTION
ITEM
LOCATION
STEP
INSTALLATION (cont)
Flattened plasti gage located on bearing
Measure
e. Plasti gage
17
cap liner or crankshaft journal. Measure
cont)
widest point. Oil clearance shall be
0.0010 to 0.0040 inch. If necessary,
install undersize bearing liners to obtain
this dimension
Located in bore of bearing caps; use
Lubricate
Bearing liner
Connecting
18
No. 30 oil
rod bearing
cap (2)
Use No. 30 oil
Lubricate
Connecting rod
19
Crankshaft
journals
(8)
Position
a. Four connecting
Cylinder
20
rod bearing
block
caps (2)
Install
Tighten to 45-50 pounds foot torque
b. Eight connecting
rod nuts (1)
Position
c. Front main bearing
cap (4)
Install
d. Oil pump
Place dial indicator on camshaft gear. Back
Check back-
e. Crankshaft gear
lash between gear (9) and camshaft gear
lash
(9) and camshaft
shall be 0.0002 to 0.006 inch. If back-
gear
lash exceeds 0.006 inch, replace gears
NOTE
Excessive backlash may also be caused by
worn camshaft bushings.
4-36
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