TM 5-4310-358-14
Table 5-1. Troubleshooting (Con't)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 3. Check for defective pressure
a. Shut off outside power source.
switch. If adjustment as outlined in
Step 2 above does not help, repair
b. Tag and disconnect all electrical leads
or replace the pressure switch.
c. Unscrew switch assembly from air
receiver.
WARNING
Dry cleaning solvent P-D-680, used to clean parts is potentially dangerous to
personnel and property. Use in a well ventilated area as the fumes are dangerous
if inhaled. Do not use near open flame or excessive heat. Flash point of solvent is
100F. - 138 F. (38 C. - 59 C.).
d. Use compressed air and remove all dust
and dirt from pressure switch components,
then wipe with a cloth dampened in an
approved cleaning solvent.
e. Using figure 5-6 as a guide,
disassemble the pressure switch assembly.
1. Cover enclosure
6. Bar top
11.
Toggle
2. Diaphragm
7. Contact board assembly
12.
Lever
3. Spring, conical
8. Spring, equalizer
13.
Plate, diaphragm
4. Screw, pressure adjusting
9. Spring, main
14.
Frame assembly
5. Screw and Nut. differential adjusting
10. Spring, main
15.
Enclosure
Figure 5-6. Pressure switch assembly.
5-12
