TM 9-2320-269-10
TROUBLESHOOTING TABLE - CONTINUED
ANTI-LOCK BRAKE SYSTEM - CONTINUED
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Cycling of anti-lock system, or air control valves.
CAUTION
There are no monitor warning light signals when these malfunctions are occurring. Cycling of the anti-lock
system is the result of false information being sent to the anti-lock computer module. This cycling of the air
valves occurs while the truck Is in motion.
If you experience rapid loss of air pressure or if a greater distance is required to stop the truck,
notify organizational maintenance.
AIR BRAKES - TRAILER
Service brakes will not release - truck and trailer towing.
Step 1.
Check air hose couplings, trailer to truck. They may be improperly connected.
a. Make sure air service and emergency air hose couplings are properly connected and seated.
b.
Open drain cock (1) on trailer air reservoir (2), to release the air pressure.
c.
If service brakes still will not release, notify organizational maintenance.
TA 222688
3-25