TM 5-3810-306-34
Section III. CRANKSHAFT MAINTENANCE
CRANKSHAFT INSTALLATION
TOOLS:
General mechanic's tool kit: automotive (5180-00-177-7033)
Shop equipment general purpose repair, semi-trailer mtd (4930-01-006-3229)
Shop equipment machine shop; fm heavy less power (3470-00-754-0738)
Shop equipment machine shop; fm heavy suppl no. 1 (3470-00-754-0739)
Shop equipment auto-maintenance and repair, fm basic (4910-00-754-0705)
Shop equipment auto-maintenance and repair, fm suppl no. 1
Lifting device (150 lbs capacity)
SUPPLIES: Oil (Item 11, Appendix B)
Lubriplate 105 (Item 4, Appendix C)
EQUIPMENT CONDITIONS:
Engine removed. (Refer to page 4-2.)
Flywheel housing and rear seal cover removed.
(Refer to page 4-29.)
Front gear cover removed. (Refer to page 4-45.)
Oil pan and suction tube removed. (Refer to page 4-57.)
REMOVAL:
CAUTION
1. WITH ENGINE ON MAINTENANCE
STAND,
Do not pry on main bearing caps to
ROTATE ENGINE BOTTOM SIDE UP.
free them from cylinder block.
2. DISCONNECT CONNECTING RODS (10).
c.
Use two hex capscrews (6) to work main cap
loose.
a. Mark each rod cap (1) according to cylinder
number.
d. Remove main bearing caps (5).
b. Remove two nuts (2) from connecting rod bolts
4. REMOVE CRANKSHAFT (9) AND BEARINGS (7),
(3).
(8) AND (11).
c.
Tap bolts (3) with plastic hammer to loosen rod
a. Using suitable lifting device, remove crankshaft
cap (1).
(9) from cylinder block in direct upward motion.
d. Slide each
piston
assembly
away
from
b. Remove and discard main bearings (4) from
crankshaft.
seven bearing caps (5).
3. REMOVE BEARINGS (4) AND CAPS (5).
c.
Remove and discard main bearings (7) and (8)
from cylinder block.
a. Mark each bearing cap to assure that each is
installed in same position at assembly.
d. If necessary, using a 3/16 in. pin punch, drive
piston cooling nozzles (14) from bearing saddles
b. Remove fourteen hex capscrews (6) from seven
in block.
main bearing caps (5).
4-24
