TM 9-2320-280-20-2
3-44. ENGINE IDLE SPEED ADJUSTMENT
This task covers:
Engine Idle Speed Adjustment
INITIAL SETUP:
Tools
Manual References
TM 9-2320-280-10
General mechanic’s tool kit:
automotive (Appendix B, Item 1
Test Equipment
STE/ICE-R
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.
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 569D (2) from injection pump (4). If change in idle sped noted,
refer to para. 2-22, Fuel System Tests. If no change in idle speed is noted, connect lead 569D (2) to
injection pump (4) and proceed to step 3.
W A R N I NG
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 750 rpm (± 25 rpm) for the 6.5L
engine by turning idle speed adjusting screw (1) on throttle shaft lever (3).
FOLLOW-ON TASK: Lower and secure hood (TM 9-2320-280-10).
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