TM 9-2320-260-20
I
8-25. AIR COMPRESSOR GOVERNOR MAINTENANCE (Contd)
c. Check and Adjustment
1. Start engine (TM 9-2320-260-10) and allow air pressure to build until air gage (3) has a steady
reading.
2. Check if air gage (3) reading shows pressure does not reach normal operating pressure, or if
pressure fails to stop building at 120 psi (827 kPa).
3. If air gage reading is correct, stop engine. End of task.
NOTE
Assistant will help with steps 4 and 5.
4. If air gage reading is too low:
a. Loosen jamnut (5).
b. Turn adapter (4) clockwise until air gage (3) reads 85-120 psi (583-827 kPa).
c. Check air gage (3). If air pressure is still low, check for leaks and repeat step b until air pressure
reading is correct.
d. Tighten jamnut (5).
5. If air gage reading is too high:
a. Stop engine.
b. Remove cap (2), open air supply valve (1), and bleed air from system until air gage (3) reads
100 psi (690 kPa).
c. Close air supply valve (1) and install cap (2).
d. Loosen jamnut (5) and turn adapter (4) 1/4-turn counterclockwise.
e. Repeat steps 1 through 3. If governor (6) fails to stop air pressure build up, repeat step 5,
a through d.
6. If air governor (6) fails to maintain air pressure at normal operating level, replace air governor (6)
(task a).
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