TM 9-2320-269-20-1
ORGANIZATIONAL TROUBLESHOOTING - CONTINUED
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
AIR SYSTEM AND BRAKES - CONTINUED
LOW AIR PRESSURE OR SLOW BUILDUP
WARNING
Drain air from system before removing lines or fittings to avoid personnel injury from compressed air.
CAUTION
Always open draincocks by hand. To avoid equipment damage, never hit with a tool.
Step 1. Inspect air pressure gages (1) and lines (2) for damage and loose parts.
a. If gages (1) are damaged, replace as needed (page 2-477).
b. If lines (2) are broken or loose, replace or tighten as needed using 1/2-inch and 9/16-inch
wrenches.
Step 2. Test pressure gages (1) for proper readings.
a. Turn draincocks (3) open, let air drain, and turn draincocks (3) closed.
b. Install in-line pressure gage between gages (1) and lines (2) using 1/2-inch and 9/16-inch
wrenches.
c. Start engine (TM 9-2320-269-10), and compare gage readings.
d. If pressure gages (1) vary more than 5 psi (34.47 kPa) from test gage, replace gages (1) (page
2-477) as needed.
e. Shut off engine (TM 9-2320-269-10), turn draincocks (3) open, and let air drain.
f. Remove in-line pressure gage and install lines (2) using 1/2-inch and 9/16-inch wrenches, and
turn draincocks (3) closed.
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