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Trailer Emergency/Supply System Troubleshooting


Measure the pressure at the spring side of the brake chamber. Is there at least 70 psi when the supply line is full?
.
Yes
No


Caution!!!
 Only qualified and competent personel should attempt to service braking systems. Block wheels before servicing trailer air brake system. Drain reservoirs before removing air lines, hose, valves or servicing valves. Consult brake chamber manufacturer's safety recommendations before working on brake chambers.



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