TM 5-4320-302-14
6-18. CRANKSHAFT ASSEMBLY (CONT)
Location/Item
Action
Remarks
INSTALLATION/
REPLACEMENT
CAUTION
Equipment damage could occur if bearing caps or bearings
are not returned to their original positions. Follow match-
marks made during disassembly.
NOTE
When a new or reground crankshaft is installed, ALL new
main, center, and big-end (upper and lower) bearings must
also be installed.
21. Bearing
Make sure upper and lower bearing brackets are
bracket, main
correctly matched. Coat main bearing supports
bearing sup-
with MIL-L-2104 lubricating oil, and install
ports, pin,
correctly matched main bearing supports, clamp-
clamping
ing bushes, and pin bushes, and into bearing bracket.
counterweights
Make sure main bear-
ing support with oil
groove is installed
in upper bearing
bracket. Position
upper and lower
bearing brackets
on crankshaft
making sure noz-
zle points toward
gear end of crank-
shaft. Install cheese
head screws and
counterweights.
Tighten screws
alternately and
evenly to 22.13 ft lb
(30 N.m) torque with
socket wrench. Using
an angular torque
gage, tighten screws
two additional 30
degree increments.
6-153
