OPERATOR TROUBLESHOOTING - CONTINUED
TEST OR INSPECTION
2. BRAKES WILL NOT HOLD OR BRAKES ARE LOCKED
Step 1. Check air pressure gage in towing vehicle for a minimum of 80 psi.
If pressure is sufficient, go to step 2.
If pressure is too low and will not build up, notify organizational maintenance.
Step 2. If towing vehicle is equipped with airline shut off valves (cut-off cocks) at the
gladhands, make sure they are turned on all the way. (Refer to operators manual for
If towing vehicle is not equipped with airline shut off valves, go to step 3.
If airline shut off valves are turned on all the way, go to step 3.
Step 3. Make sure that intervehicular air brake hoses (both service and emergency brake
lines) are properly connected to the towing vehicle.
If hoses are not connected properly, disconnect and reconnect the
If hoses are properly connected, notify organizational maintenance.
Step 4. Check that auxiliary brake controls are operating properly.
If auxiliary brake control valves are operating properly, notify organizational
If auxiliary brake controls are not operating properly, notify organizational
maintenance to replace auxiliary brake controls.
3. PARKING BRAKE WILL NOT HOLD
Check parking brake lever for correct operation.
If parking brake lever is not operating properly, notify organizational
If parking brake needs adjustment, notify organizational maintenance.