Cleaning and Inspection. - TM-10-3930-621-340078

TM 10-3930-621-34

c. Cleaning and Inspection.

(3) Backlash between pump gears should not

(11) Clean all parts with cleaning compound,

exceed 0.020 of an inch.

solvent (Spec.

P-S-661).

Dry thoroughly with

d. Installation.

compressed air.

(1) Install pump to flange of engine block with

two bolts (1, fig. 3-13). Drive gear must be properly

Note. The principal wearing parts of the oil

meshed with camshaft gear.

pump are the gears. If dirt or sludge have been allowed

Caution: If pump is not seated correctly, it is

to accumulate in the lubricating system, the oil pump'

possible to break the retaining lugs In the casting

gear wear may be rather pronounced in a comparatively

body when tightening bolts (1). Check pump position

short time. When the oil has been kept clean and oil

carefully before tightening.

filter has been properly serviced, the wear on these parts

(2) Install oil pan (para 3-40).

will be very slow.

(3) Check to see if drain plug (9, fig. 3-12) is

secure and add oil as specified.

(2) Both the spiral drive gear on the pump drive

shaft and the mating gear on the camshaft, should be

checked for proper contact and evidence of the

excessive wear, pitting or chipping.

3-20