Air compressor unloads too quick

Discussion in 'International Forum' started by joejffrs, Dec 15, 2020.

  1. joejffrs

    joejffrs Light Load Member

    Jul 24, 2018
    San Diego
    Have a 2013 Maxxforce 11. Only when cold and after air builds and purges, air pressure drops 5-10 psi on secondary tank after a minute or so and the compressor starts building again. Once coolant is above 170 all is normal. Replaced governor with a spare I had with no change. Thinking unloader problem but have found conflicting info on Bendix site as to where the unloader is. Is it on the top of the compressor or a separate component? Read about a service kit also. Thanks for any help.
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