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Compressor unloader frustration...

Discussion in 'International Forum' started by joe9246, Apr 16, 2012.

  1. Apr 16, 2012 #1
    joe9246

    joe9246 Bobtail Member

    23
    0
    Mar 9, 2010
    detroit, mi
    0
    Alright, my truck is a international 9400i with a Cat C13 acert . I just replaced the compressor unloader (which was sticking) with the replacement kit from Cat. It was easy to do 2 screws and a plate on top of the compressor head. The new one looked just like the old one.
    Now the compressor is taking a long time to build up pressure and it hardly builds any pressure when idling. Any ideas?
     
    joe9246, Apr 16, 2012
    joe9246, Apr 16, 2012
    #1
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  3. Apr 16, 2012 #2
    Heavyd

    Heavyd Road Train Member

    7,754
    6,189
    Feb 4, 2009
    0
    Massive leak. Make sure you didn't miss an oring, or one slipped out of a groove.
     
    Heavyd, Apr 16, 2012
    Heavyd, Apr 16, 2012
    #2
  4. Apr 16, 2012 #3
    QUALITYTRUCK

    QUALITYTRUCK Road Train Member

    1,801
    1,762
    Jun 14, 2009
    romulus,mi
    0
    you only got 30% of the job done.drain all coolant from system.remove head of compressor (4 bolts).the head assembly comes apart like a sandwich of 4 layers if i recall.all parts must be seperated and cleaned.will be full of much sticky carbon build up.make sure you purchase gasket kit first!i usually get bendix kit from detroit diesel.not hard to do.just takes time to clean.good luck.
     
    QUALITYTRUCK, Apr 16, 2012
    QUALITYTRUCK, Apr 16, 2012
    #3
  5. May 12, 2012 #4
    jab8283

    jab8283 Bobtail Member

    38
    16
    Jan 16, 2010
    Indiana, U.S.
    0
    In addition to above suggestion, check for failed air governor or air dryer.
     
    jab8283, May 12, 2012
    jab8283, May 12, 2012
    #4
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