TM-9-2815-237-34 HMMWV Engine Direct Support & General Support Maintenance Manual Download
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TM 9-2815-237-34 2-120 Change 2 2-32. FUEL INJECTION PUMP REPAIR (Cont’d) CAUTION Tightly wound coils on idle spring must be installed facing throttle block, or injection pump may malfunction. 75. Install idle spring (1) on pushrod (2). NOTE • Perform step 76 for pre-1990 6.2L engines. • Perform steps 77 through 79 for 6.5L engines and 6.2L engines 1990 and above. 76. With throttle shaft (8) in wide open position, install min-max governor (4) on notch of throttle shaft (8). Rotate throttle shaft (8) to low idle position and lower min-max governor (4) into housing (5). 77. Insert inner governor spring (9) into pushrod (2). 78. With throttle shaft (8) in wide open position, install min-max governor (4) on notch of throttle shaft (8) and position tang (12) of thrust spring (11) in groove on throttle block (3). Rotate throttle shaft (8) to low idle position and lower min-max governor (4) into housing (5). 79. Hook tang (10) of thrust spring (11) in groove (13) of housing (5). CAUTION Guide stud must be installed between metering valve arm and spring. Incorrect installation may cause injection pump to malfunction. NOTE • Perform steps 80 and 81 for vehicles with 6.5L and 1990 and above 6.2L engines. • Perform step 82 for vehicles with pre-1990 6.2L engines. 80. Install nut (17) and seal (16) on guide stud (7). Install guide stud (7) in housing (5) between metering valve arm (15) and spring (14) and into min-max governor (4). Tighten guide stud (7) to 80-90 lb-in. (9-10 N•m) using 1/4-in. hex head driver. 81. Install cap (18) on guide stud (7). 82. Install guide stud (7) and washer (6) in housing (5) between metering valve arm (15) and spring (14) and into min-max governor (4). Tighten guide stud (7) to 80-90 lb-in. (9-10 N•m) using 1/4-in. hex head driver.