TM 5-3825-229-14&P
6-12. CRANKSHAFT AND MAIN BEARINGS (cont)
c.
Installation (cont).
(4)
Install bearing caps in position over respective journals. Caps must be installed with numbers
on caps toward camshaft side of crankscase. If necessary, push crankshaft towardfront of
engine to bring rear bearing surfaces in alignment.
(5)
Install washers (2) and screws (1) to secure bearing caps to crankcase.
CAUTION
Do not over torque bearing screws. Overtightening of the screws may distort the bearing caps and draw the bearings too
tight against the crankshaft journals. This can result in premature bearing failure.
(6)
Tighten screws (1) to a torque of 90 Ib-ft (123 Nm) (wet).
(7)
Attach a dial indicator to crankcase. Push the crankshaft in one direction to take up end play. Set dial
indicator to zero and pull crankshaft in the opposite direction. End play should be a minimum of 0.004 in.
(0.100 mm). Maximum end play should be 0.015 in. (0.38 mm).
(8)
If end play does not conform to specifications replace flanged rear bearings (6 and 10).
(9)
Install pistons and connecting rods. (para. 6-1 1).
(10)
Install crankshaft front and rear oil seals (paras. 6-9 and 6-10).
(11)
Install gear train and backplate (para. 6-8).
(12)
Install oil pump and oil pan (paras. 5-11 and 5-12).
(13)
Install flywheel and flywheel housing (paras. 5-9 and 5-10).
(14)
install crankshaft pulley (para. 5-8).
(15)
Install cylinder head (para. 5-7).
6-34
