TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 2 Download
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3-44. ENGINE IDLE SPEED ADJUSTMENT This task covers: Engine Idle Speed Adjustment Engine Idle Speed Adjustment 1. Start engine (TM 9-2320-280-10) and bring engine to operating temperature. 2. Note idle speed and disconnect lead 569B (2) from injection pump (4). If change in idle speed is noted, refer to para. 2-22, Fuel System Tests. If no change in idle speed is noted, connect lead 569B (2) to injection pump (4) and proceed to step 3. WARNING Keep hands and arms away from fan blade and drivebelts while engine is running or serious injury may result. 3. Set engine idle speed to 650 rpm (± 25 rpm) for the 6.2L engine or 700 rpm (± 25 rpm) for the 6.5L engine by turning idle speed adjusting screw (1) on throttle shaft lever (3). INITIAL SETUP: Tools General mechanic’s tool kit: automotive (Appendix B, Item 1) Test Equipment STE/ICE-R Manual References TM 9-2320-280-10 Equipment Condition Hood raised and secured (TM 9-2320-280-10). General Safety Instructions Keep hands and arms away from fan blade and drivebelts while engine is running. TM 9-2320-280-20-2 Change 3 3-83 FOLLOW-ON TASK: Lower and secure hood (TM 9-2320-280-10). 1 2 3