TM 5-4320-300-14
6-11. CRANKSHAFT AND FLYWHEEL (CONT)
Location/Item
Action
Remarks
INSTALLATION/INSPECTION
38. Oil plugs and
Install.
Woodruff key
39. Crankshaft
Slide crankshaft gear over
timing gear
end of crankshaft with
timing marks on outer rim
of gear facing out and
keyway in gear in aline-
ment with Woodruff key
in crankshaft. Aline the
proper timing mark on
crankshaft gear with cor-
responding mark on idler
gear. Drive the gear up
against shoulder on
crankshaft.
40. Backlash be-
Check backlash. It should be 0.003 to 0.005
tween crank-
inch (0.0762 to 0.127 mm) with new gears,
shaft gear and
or a maximum of 0.007 inch (0.1778 mm)
idler gear
with used gears.
CAUTION
Equipment damage may occur if a used oil pump drive gear is reinstalled. Install new gear to
ensure oil pump functions at full capacity.
41. Oil pump
Lubricate inside of replacement oil pump drive
drive gear
with MIL-L-2104 oil. Slide gear straight on
crankshaft with chamfered edge of gear toward
butt end of crankshaft and drive gear into
place. Gear is correctly positioned when for-
ward face of gear is 2.680 inches (68.07 mm)
from front end of crankshaft.
42. Slip torque
Check the slip torque (press fit) of oil pump
check
drive gear on crankshaft. Gear should not slip
on crankshaft at a torque of 100 ft lb
(136 N•m). If gear slips, replace it.
6-105
