TM-9-2815-237-34 HMMWV Engine Direct Support & General Support Maintenance Manual Download
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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.