TM 5-4310-385-13
INSPECTION.
NOTE
Air tank should be under pressure to check drain cock for leaks.
a.
Run compressor until unit kicks off (tank pressure close to 190 psi).
b.
Apply soap solution to drain cock (1 ) and check for leaks. If bubbles appear, first tighten drain cock (1) and then
fitting at tank.
c.
If leaks continue, replace drain cock.
d.
Inspect for corrosion or damage. Replace if defective.
REMOVAL.
WARNING
Disconnect main power and turn compressor unit off before performing
maintenance procedure.
a.
Disconnect main power and turn compressor switch OFF.
WARNING
Air pressure in tank must be discharged before removal of drain cock. Removal
under pressure could cause serious injury.
b.
Open drain cock (1) and completely release tank pressure.
c.
Unscrew drain cock (1) from tank.
NOTE
Drain cock is not repairable. Replace if defective.
INSTALLATION.
a.
Screw drain cock (1) securely into tank.
b.
Connect main power.
c.
Run compressor and check for leaks.
3-50