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  1.  I have a 1989 Mack Superliner R/W713 dump truck that wont build pressure. I changed my compressor and governor. air coming out my compressor outlet strong but weak coming out my primary tank. i can put my finger over the hoses for the brake line and its weak. any suggestions.


    1. Swishy



      Gudday M8

      the 'F'  model tilt tray I have had much the same problem

      the main hose/pipe from compressor to 1st tank had coked up

      the oil bypassing the rings in the compressor would burn 

      n coke up the hose...we just draged sum wire with a ruff end threw the pipe

      to allow air to go to 1st tank



    2. theakerstwo


      Use a spray bottle with soapy water in it and start at the compressor discharge line spraying it.Many air compressors have been changed when it was a soft hose leaking.Remenber if there is no pressure there to start with its hard to hear a air leak.It would be nice if you could connect shop air to the comp discharge line and see were the air goes.Dont air a tank up but use the comp line.

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