Help with Air Compressor on CAT C15

Discussion in 'Trucks [ Eighteen Wheelers ]' started by ahmadali04, Feb 28, 2013.

  1. beltrans

    beltrans Medium Load Member

    441
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    Nov 26, 2008
    spokane wa
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    It can be leaking safety valve.... But I replaced a few to find out later that check valve on my AD-9 air dryer was defective not allowing air to flow from the air dryer to a wet tank...
     
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  3. cumminsISB

    cumminsISB Light Load Member

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    Feb 5, 2011
    D'Lo, Ms
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    do you remember the part number? Mine is also leaking.
     
  4. mariomacias

    mariomacias Bobtail Member

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    Sep 4, 2016
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    The check valve on my c15 cat was spiting air out of it so I replaced it and it work for about an haur and it stated spiting air out of it and wont build up air is it just another bad check valve
     
  5. mariomacias

    mariomacias Bobtail Member

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    0
    Sep 4, 2016
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    I have a c15 cat its spiting air out the top of the copresor so I replaced it and it worked for about an hour and it started to spit air out of it could it just be another bad check valve
     
  6. WrenchWrenchWrench

    WrenchWrenchWrench Light Load Member

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    Jan 3, 2016
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    Do you mean the unloader valve that's held in the head with two screws or the brass safety valve that pops off at high pressure?
     
  7. mariomacias

    mariomacias Bobtail Member

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    Sep 4, 2016
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    Safety valve that pops off at high pressure
     
  8. mariomacias

    mariomacias Bobtail Member

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    0
    Sep 4, 2016
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    Safety valve that pops off at high pressure
     
  9. WrenchWrenchWrench

    WrenchWrenchWrench Light Load Member

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    Jan 3, 2016
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    Is your truck building to much air pressure? It shouldnt pop off if your governor and unloader valve are working correctly and cutting out your air compressor. And make sure the valve is rated for the right pressure, it should be printed on the side.
     
  10. mariomacias

    mariomacias Bobtail Member

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    Sep 4, 2016
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    Well thankyou verry much I'm going to go check that out right now thanks again
     
  11. beltrans

    beltrans Medium Load Member

    441
    101
    Nov 26, 2008
    spokane wa
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    What type of an air dryer do you have on your truck?
     
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