TM 5-3805-254-20-1
ORGANIZATIONL TROUBLESHOOTING - CONTINUED
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 2.
Check output air hose (4) from treadle valve (5) to front brake limiting and quick release valve (6)
as follows: using 7/8-inch open-end wrench, loosen output air hose fitting (7) six turns, have
assistant press down brake pedal (8), listen for hissing noise, release brake pedal (8).
a.If hissing noise is not heard, replace treadle valve (5) (page 2-1052).
b.If hissing noise is heard, tighten out hose fitting (7) using 7/8-inch open-end wrench
and go to step 3.
Step 3. Check front brake limiting and quick release valve (6) for air pressure as follows: using 7/8-inch
open-end wrench loosen output air hose fitting (9) six turns, have assistant press down brake
pedal (8), listen for hissing noise, release brake pedal (8).
a.If hissing noise is not heard, replace front brake limiting and quick release valve (6),
notify Direct Support Maintenance.
b.If hissing noise is heard, tighten output hose fitting (9), using 7/8-inch open-end
wrench, and go to step 4.
TA243908
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