TM 9-2320-289-34
3-18.
CRANKSHAFT, MAIN BEARINGS, AND FLYWHEEL INSTALLATION (Con’t).
4.
Install rear main seal. (See paragraph 3-34)
CAUTION
Ensure that main bearing caps (2) are fully seated before installing bolts (3
and 4). Failure to follow this caution may result in damage to main bearing
caps.
5.
Coat inner surface of lower main bearing (5) with lubricating oil and install in main bearing cap
(2) as marked. Using soft-faced hammer, tap main bearing cap into place and install with 2
inner bolts (4) and 2 outer bolts (3). Repeat this step for each main bearing cap that was
removed.
NOTE
l Bearing cap #3 bolts should not be tightened to full specifications yet,
l Inner bolts (4) are longer than outer bolts (3),
6.
Tighten inner bolts (4) and outer bolts (3) to 40 Ib. -ft. (54 N.m). Evenly tighten inner bolts
again to 110 Ib. -ft. (149 N.m). Evenly tighten outer bolts again to 100 Ib.-ft. (136 N.m).
7.
Tighten bearing cap #3 inner bolts (4) and outer bolts (3) to 10 Ib. -ft, (14 N.m). Using
soft-faced hammer, tap end of crankshaft (6) rearward, then forward, to line up #3 main
bearing (5) with crankshaft thrust surface. Perform step 6 for bearing cap #3.
8.
Coat surface of connecting rod
bearings with lubricating oil. Push
pistons down to engage connecting
rods on connecting rod journals.
Remove short pieces of 3/8 in. I.D.
hose (7) from threads of connecting
rod (1 O) bolts immediately before
installing connecting rod caps (9).
Install 8 connecting rod caps on
crankshaft (6) journals as marked
with 16 new nuts (8). Evenly tighten
nuts to 45-50 Ib.-ft. (61-68 N.m).
TA50668
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