TM 5-4310-371-14
WARNING
Disconnect compressor unit from main power supply before servicing, replacing
or repairing parts of equipment, to avoid personal injury.
WARNING
Release air pressure from air receiver and compressor pump before inspection,
performing procedures or disassembly of equipment, to avoid personal injury.
a. To remove safety valve, turn valve at base counter clockwise (figure 5-10, item 1) until free.
b. To test, connect safety valve to a test unit. Valve must allow air to escape at 200 PSI (1380 KPa) to be properly
working.
c. To install, turn safety valve at base clockwise and tighten (figure 5-10, item 1), into mounting tee (figure 5-10, item
2) atop of air receiver (figure 5-10, item 3).
5-9. CHECK VALVE TESTING AND REPAIR
WARNING
Disconnect compressor unit from main power supply before servicing, replacing
or repairing parts of equipment, to avoid personal injury.
WARNING
Release air pressure from air receiver and compressor pump before inspection,
performing procedures, or disassembly of equipment to avoid personal injury.
a. To test check valve, remove valve and connect to test unit to see if valve (figure 5-11) is closing off after air
passes through it or if air is backing through valve under pressure.
b. Disassembly
(1) Remove cap (figure 5-11, item 1) by turning it counter clockwise off of body (figure 5-11, item 7).
(2) Remove gasket (figure 5-11, item 2) from inside body (figure 5-11, item 7).
(3) Remove spring (figure 5-11, item 3) from inside body (figure 5-11, item 7).
(4) Remove disc (figure 5-11, item 4) from inside body (figure 5-11, item 7).
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