2-91
TM 9-2815-237-34
2-32. FUEL INJECTION PUMP REPAIR (Cont’d)
33.
34.
35.
36.
37.
38.
39.
Rotate housing (22) and holding fixture in vise so advance plug (28) faces upward.
Using 5/16-in. hex head driver, remove head locating screw (27) and O-ring (26). Discard
O-ring (26).
Remove spring side plug assembly (24) and O-ring (25) from housing (22). Disard O-ring (25).
Remove servo advance plunger (23) from spring side plug (24).
Using 1/4-in. hex head driver, remove advance plug (28), cam advance pin (30), and O-ring (29) from
housing (22). Discard O-ring (29).
Remove power side advance piston hole plug (35) and O-ring (34). Discard O-ring (34).
Remove servo advance piston assembly (33) from housing (22). Tap piston assembly (33) to remove
spring (31) and valve (32). Tag spring (31) for assembly.
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