TM 5-3895-359-14&P
the pump driving gear from the front end of the
crankshaft as follows:
a. Screw the crankshaft pulley retaining bolt into the
end of the crankshaft.
b. Place the jaws of the puller behind the gear and
locate the point of the puller screw in the center of
the retaining bolt.
c. Turn the puller screw clockwise and draw the gear
from the crankshaft.
4. Remove the Woodruff key from the crankshaft.
Install Oil Pump Driving Gear on Crankshaft
1. Install the Woodruff key in the crankshaft.
Fig. 10 - Measuring the Clearance Between the
Teeth of the Oil Pump Driven Gears.
2. Position the gear (80) so the chamfer on the gear
hub is toward the main bearing cap and start the gear
Install Oil Pump
on the shaft and over the key.
Refer to Fig. 2 and install the oil pump on the main
3. Slide the gear on the crankshaft or use a sleeve if
bearing caps as follows:
required, as illustrated in Fig. 9, and drive the gear
tight against the shoulder on the crankshaft.
1. Hold the pump assembly against the main bearing
caps so the idler gear (56) meshes with the driving
4. Install the oil slinger with the dished side away from
gear on the crankshaft.
the gear as illustrated in Fig. 1 on Page 10-2-66.
2. Insert the four bolts (55) with lock washers through
5. Install the crankshaft front cover as outlined on Page
the mounting feet of the pump and into the bearing
caps (39). Align the pump so that the teeth of
crankshaft gear and the idler gear are parallel; then
tighten the bolts to 35-39 lb-ft and check clearance
between the gear teeth with a feeler gage. Proper
clearance between the crankshaft gear and idler gear
is .005" minimum, .012" maximum (Fig. 10).
NOTE: Always check the clearance between
the crankshaft gear and the oil pump idler gear
with the engine in the upright or running
position.
If shims were used between the pump mounting feet
and the bearing caps and new gears are not installed,
the same shims (cleaned) or the same number of new
(identical) shims should be installed and the number
Fig. 9 - Installing Oil Pump Driving Gear on
then adjusted to obtain the proper clearance between
Crankshaft.
gear teeth. However, if new gears have been installed,
a larger number of shims will be required under the
mounting feet. In either event, the pump must be
tightened on the bearing cap before
10-5-10
