Cleaning. - TM-55-1930-208-240200

TM 55-1930-208-24

Cleaning.

(1) Wash all parts in clean fuel oil (item 9, Appendix C).

(2) Wipe off excess oil and dry.

d. Inspection.

(1) Inspect gear cavity in the pump body and the drive shaft bushings. If the driven gear bushings are worn,

replace the bushings.

(2) Inspect all gear teeth for scoring or signs of wear. Replace a bad gear.

(3) Inspect pressure relief valve and its seat in the pump body for signs of wear. Replace a bad relief valve.

e. Repair. Repair of the oil pump is limited to replacing defective parts.

Reassembly.

(1) Refer to figure 3-98 and press bushing (34) into pump body (33). Install pin (30) into idler gear support (29).

(2) Install idler gear support (29) on pump body (33) and secure with bolt (28). Tighten bolt to 45-50 lb-ft (61-68

(3) Apply a light coat of engine oil on shaft (32). Insert woodruff key (31) in the keyways. Using an arbor press

drive gear (4) on shaft.

(4) Install the drive gear and shaft assembly into pump body (33) and slide the driven gear (5) onto the shaft.

(5) Place drive shaft (32) on the bed of an arbor press and insert woodruff key (31) in keyway of shaft. Position

drive gear (27) on shaft (32), with the extended hub side up away from the pump body.

(6) Insert a .004 inch to .006 inch feeler gage between the driven gear and the pump body. Press the gear on

the shaft, until the clearance between the gear and the body is .004 inch to .006 inch.

(7) Install pin (23) in idler gear support (29). Position idler gear (25) on support, with the flat side of gear facing

the support. Install washer (24), washer (22), and bolt (21). Tighten bolt to 21-26 lb-ft (28-35 Nm) so the bolt

head is over the end of pin (23). Bend tab of washer (22) against on flat of bolt head.

(8) Position a new gasket (20) and cover (19) on pump body and secure with two lockwashers (18) and two

screws (17).

(9) Install relief valve (16), spring (15), two gaskets (14), and two plugs (13). Tighten plugs to 25-35 lb-ft (34-47

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