Air lines can sustain damage near their connections on the trailer side when a vehicle jackknifes or pulls away, Phillips says in its monthly technical bulletin. Even if the vehicle is equipped with a spring guard, tubing can be stressed, leaving coiled air lines inoperable.
However, according to Phillips, if damage occurs to the lead close to the fitting, a temporary repair to the air line can be made if enough length is available with a composite push-to-connect fitting with an O-ring and a nylon air tube cutter. Phillips stresses this is a temporary solution in an emergency situation.
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