TM 10-3510-220-24
2-26. AIR COMPRESSOR (CONT)
SERVICE (Cont)
6. Install two air filters (4) on air
compressor (1).
ADJUSTMENT
1.
T u r n o n e l e c t r i c a l p o w e r t o a i r
compressor.
WARNING
This adjustment is performed with
power on.
Follow steps carefully.
Death or serious injury could result.
2.
3.
4.
Loosen captive acorn nut (8) and
remove pressure switch cover (9).
Open bleeder valve (7) on bottom of air
tank (5). Release air until compressor
turns on. Note pressure on pressure
gage (6). Close bleeder valve.
Watch pressure gage (6) on air tank (5)
and note the pressure that the
compressor cuts off.
CAUTION
To avoid damage to equipment do not
e x c e e d m a x i m u m a l l o w a b l e s y s t em
pressure.
NOTE
The pressure switch has a differential of
20 psi (138 kPa) between compressor
cuton and cutoff. Adjustment of nut (10)
changes the cutoff pressure. Tightening
the nut (clockwise) increases cutoff
pressure.
Loosening the nut (counter-
clockwise) reduces cutoff pressure.
5.
6.
7.
Make a one-quarter turn of nut (10) to
increase or decrease cutoff pressure.
Repeat steps 3 thru 5 until the
compressor cut-on/cutoff range is
reached: ON - 60 psi (414 kPa); OFF
80 psi (552 kPa).
Install pressure switch cover (9),
tighten captive acorn nut (8), and turn
off power to compressor.
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