‘15 prostar won’t build air

Discussion in 'Trucks [ Eighteen Wheelers ]' started by mg1224, Mar 16, 2019.

  1. Heavyd

    Heavyd Road Train Member

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    The unloader mechanism can start to carbon up inside the compressor head itself and get stuck. Give it a few raps with a hammer and it might free up and start working again.
     
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  3. fast1buzz

    fast1buzz Light Load Member

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    Feb 6, 2019
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    I'm glad you found your problem. Sound like you have it under control. The unloader valve in the compressor head wouldn't be bad to do if one had the facilities.
     
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