User's Manual

42
Date of Origin – 02/01/08
Air leaks at spring brake chambers, reservoir fittings, drain valves, drop hoses, and connections
can cause the air system to perform less efficiently and the compressor to cycle too frequently
and may eventually result in dragging brakes.
If you suspect air system problems in either service brakes or spring brakes, don’t hesitate –
service the brake system immediately;
Trouble shooting the air brake system:
• Use the “soap bubble” test at all connections throughout the air system to detect
external leaks
• Threaded connections at the ECU
• Threaded connections at the pressure protection valve
• Any and all push-in fittings
• Check for exhaust leaks at all valves to detect internal leaks.
• Check the actuator and spring brake push rod for proper movement in operational modes.
NOTE: Never splice air brake hoses within the air brake system. This action will void part or all of
the trailer warranty.