ORGANIZATIONAL TROUBLESHOOTING - CONTINUED
TEST OR INSPECTION
FRONT BRAKES DO NOT WORK - CONTINUED.
Safety goggles must be worn when working with air lines to prevent personal injury.
Ensure that vehicle is on level ground and that rear wheels are chocked to prevent vehicle from
moving or severe injury to personnel may result.
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 (CM 5-3805-254-10).
Step 4. 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
b.If hissing noise is heard tighten output hose fitting (3) using 5/8inch open-end
wrench, and go to step 4.