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Red Emergency Supply Line Hose

Red Emergency Supply Line Hose

 

$37.99

20244
+ −
EMERGENCY  AIR  LINES.—  The  emergency line has two purposes. First, it supplies air to the trailer air  tanks.  Second,  the  emergency  line  controls  the emergency  brakes  on  the  combination  vehicle.  Loss  of air pressure in the emergency line causes the trailer emergency  brakes  to  activate.  The  pressure  loss  could be caused by a trailer breaking loose and tearing apart the emergency air hose. The loss could also be the result of a hose, metal tubing, or other parts breaking and causing an air leak. When the emergency line loses pressure,  it  also  causes  the  tractor  protection  valve  to close, causing the air supply knob to pop out.

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