TM 9-6115-664-13&P
5-11. OIL PUMP MAINTENANCE
This task covers removal, inspection, and installation
INITIAL SETUP
Tools:
Equipment Condition:
Shop Equipment, Automotive Maintenance
Camshaft Removed (Para. 5-12)
and Repair (Item 4, App. B)
Parts/Materials:
Lubricating Oil (Item 10, App. E)
A.
REMOVAL.
Remove oil pump (1, Figure 5-5) from engine
block by removing screws (2) and washers (3).
Ensure locking plate (4) is retained with pump.
B.
INSPECTION.
1.
Inspect pump gear on front side and internal gears
on reverse side by rotating the gear by hand.
Observe for broken teeth or excessive wear on the
teeth. Check for binding. Replace the pump if
gear is damaged or binding.
2.
Inspect
crankshaft
gear
teeth
for
damage.
Remove and replace the crankshaft (Para. 5-15) if
required.
Figure 5-5. Oil Pump
C.
INSTALLATION.
1.
Dip oil pump (1) in lubricating oil. Install oil pump and locking plate (4), making sure that the protruding part of the
pump shaft is received by the index bore. If properly installed, the pump will lie flat against the rear wall of control
housing without a gap.
2.
Secure oil pump (1) and locking plate (4) using screws (2) and washers (3). Torque screws to 7.5 to 8.5 ft-lbs (10 to
12 Nm). Check gear backlash between the oil pump and crankshaft gear wheel. There must be rotary play in the
tooth contact engagement.
3.
Install camshaft (Para. 5-12).
5-34
