OPERATOR TROUBLESHOOTING - CONTINUED
TEST OR INSPECTION
3. BRAKES WILL NOT RELEASE.
Step 1. Check connections of air lines (1) to gladhands (2) for proper connection (Emergency-to-Emergency and
If air lines are not connected properly, reconnect.
Step 2. Check for dirty or leaking gladhand connection.
If gladhand is dirty, clean.
If gladhand connection leaks after cleaning, notify organizational maintenance.
Step 3. Inspect hoses, lines, and connectors for leaks.
If leaks are found, notify organizational maintenance.
Step 4. Check semitrailer air reservoir (3) for open draincock (4).
If draincock (4) is open, close it
If draincock is closed and brakes still will not release, notify organizational maintenance.
Step 5. Check for proper venting of pressurized air at relay valve.
If relay valve does not vent, notify organizational maintenance.