TM 10-4610-229-24
3-74. CRANKSHAFT REPLACEMENT (CONT)
3
Install one flywheel bolt in each end of crankshaft.
4
Connect a suitable lifting device. Weight is 350 lb.
5
Remove bearing cap bolts. Remove bearing caps.
6
Remove crankshaft.
7
Remove crankshaft main bearings from cylinder block and bearing caps.
b. Installation
1
Install one flywheel bolt in each end of crankshaft.
2
Lubricate crankshaft and crankshaft bearings with engine oil (MIL-L-2104).
3
Install crankshaft bearing halves in cylinder block and bearing caps. Make sure bearing tabs are in grooves.
4
Connect a suitable lifting device to crankshaft.
5
Install crankshaft in cylinder block.
6
Place a 0.039 in. solder wire on bearing.
CAUTION
To prevent damage: Make sure main bearing caps are installed so that numbers on side of
cylinder block are the same as on bearing caps. Make sure arrows on bearing caps point to front
of cylinder block.
NOTE
Do not turn crankshaft when solder wire is in position to check clearance.
7
Install bearing caps. Install bearing cap bolts.
8
Starting at end with tab, torque bolts to 180-200 ft lb.
9
Starting at end opposite tab, turn bolts an extra 115-125°.
10
Remove bolts. Remove bearing caps. Remove solder wire from bearing caps.
11
Measure thickness of solder wire. Thickness should be 0.0036-0.0073 in. with new bearings. Maximum
clearance with used bearings is 0.010 in.
3-191
