Table 2-2. Unit Troubleshooting (Continued)
TEST OR INSPECTION
31. AIR COMPRESSOR DOES NOT OPERATE. (Cont)
Check for internal failure of air compressor. Listen for unusual noise or overheating.
If compressor operates but does not produce sufficient air volume or pressure,
replace air compressor. Refer to paragraph 2-26.
If air compressor is serviceable and problem persists, notify your supervisor.
32. AIR PRESSURE IS TOO LOW (BELOW 60 PSI [414 kPal) OR TOO HIGH (ABOVE 60
PSI [552 kPa]).
Check for air leaks at fittings, lines, and tank.
If leaks are found, repair air leaks. Refer to paragraph 2-27.
If leaks are not found, proceed to next step.
Check for clogged air compressor filters.
If filters are dirty, clean or replace air filters. Refer to paragraph 2-26.
If filters are serviceable, proceed to next step.
Check for improperly adjusted pressure switch. Test run compressor: on at 60 psi
(414 kPa); off at 80 psi (552 kPa).
If pressure is incorrect, adjust pressure switch. Refer to paragraph 2-26.
If pressure is correct, proceed to next step.
Check for broken pressure switch. Temporarily substitute a known good switch for
the suspect switch.
If switch is defective, replace pressure switch. Refer to paragraph 2-26.
If switch is serviceable and problem persists, notify your supervisor.