TM 5-3805-254-20-1
ORGANIZATIONAL TROUBLESHOOTING - CONTINUED
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
62. FRONT BRAKES DO NOT RELEASE.
WARNING
Safety goggles must be worn when working with air lines to prevent personal
injury.
Chock wheels of dump truck (TM 5-3805-254-10).
NOTE
Check AIR PRESSURE gage for air pressure between 90 and 130 psi. If specified
air pressure is not present, start engine and check that air pressure in air system is
between 90 and 130 psi (TM 5-3805-254-10). Shut down engine (TM 5-3805-254-10).
Step 1.
Check front brake limiting control valve (1) for air pressure as follows: push handle (2) in, using
5/8-inch open-end wrench, loosen output hose fitting (3) six turns, and listen for hissing noise.
a. If hissing noise is not heard, replace front brake limiting control valve (1), notify Direct
Support Maintenance.
b. If hissing noise is heard, tighten output hose fitting (3), using 5/8-inch open-end
wrench, and go to step 2.
2-332
