TM 9-2330-227-14&P
ORGANIZATIONAL TROUBLESHOOTING - CONTINUED
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
10. BRAKES WILL NOT APPLY OR RELEASE - CONTINUED
Check draincock on air reservoir.
Step 3.
If it is open, close (page 2-13).
If it is damaged, replace ( page 4-133).
Check for damaged or leaking air reservoir. Use soap solution, and coat
Step 4.
seams.
If air reservoir is leaking, replace (page 4-131).
Check master cylinder for damage or leaks.
Step 5.
If master cylinder is damaged or leaking, replace
Check fluid level in master cylinder (page 4-12).
Step 6.
If fluid level in master cylinder is low, fill to
proper level (page 4-5).
Check air lines and fittings for breaks, damage, or leaking air pressure.
Step 7.
Use visual checks and soap solution.
a. If fittings are loose, tighten
b. If air lines and fittings are damaged or leaking, replace or
repair (page 4-117).
Check for damaged air filters.
Step 8.
If air filters are damaged, replace (page 4-135).
Have assistant apply and release towing vehicle brakes. Emergency relay
Step 9.
valve should vent air through exhaust port when towing vehicle brakes are
released.
If air is not vented from relay valve when tractor brakes
are released, replace relay valve (page 4-140).
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