TM-3-1040-279-12-P
GENERATOR SET, SMOKE, MECHANICAL: PULSE JET, M157 W/120 GAL FOG OIL TANK AND W/80 GAL FOG OIL TANK
TECHNICAL MANUAL; OPERATOR’S AND ORGANIZATIONAL MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST AND DEPOT MAINTENANCE REPAIR PARTS
MAY 1987
TM-3-1040-279-12-P - Page 235 of 389
TM 3-1040-279-12&P
4-37 CHECK AIR COMPRESSOR PRESSURE SWITCH.
This task covers measuring air pressure in pressure tank.
INITIAL SETUP
Tools
General Mechanic’s Automotive Tool Kit
SC 5180-90-CL-N26
Test Equipment
Air pressure test gage (Fig. G-22, App G)
1.
2.
3.
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11.
Drain air out of pressure tank through control valve (1).
Remove cap (2) on tee (3).
Attach pressure gage (Fig. G-22, App G) to tee.
Set circuit breaker CB1 to ON.
Set POWER switch to ON.
Allow air compressor to run.
Pressure gage should indicate 63 ±3 psig when air compressor stops running. If the reading is not
63 ±3 psig, replace pressure switch.
Set POWER switch to OFF.
Set circuit breaker CB1 to OFF.
Drain air from pressure tank through control valve (1).
Remove pressure gage from tee (3) and install cap (2) on tee (3).
4-167
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