Trucking Jobs New Driver Jobs Flatbed Jobs Tanker Jobs Refrigerated Jobs Auto Hauler Jobs
Page 1 of 2 12 LastLast
Results 1 to 10 of 12
  1. #1
    Bobtail Member
    Member Since
    Jan 2011
    Trucker?
    No Answer
    Posts
    27
    Thanks
    3
    Thanked: 3 Times

    Help with Air Compressor on CAT C15

    Hi. I have a Bendix Air Compressor on a CAT C15, that is leaking air from the safety valve on top of the compressor. It is causing the air compressor to run all the time. Any ideas on what it could be? Thanks.


  2. #2
    Road Train Member bubbanbrenda's Avatar
    Member Since
    Feb 2011
    Location
    Middletown,Oh.
    Trucker?
    28 Years
    Posts
    1,224
    Thanks
    304
    Thanked: 511 Times
    Without a picture I'm not sure, but it sounds like a unloader valve. I would replace it first before I bought a complete compressor.

  3. #3
    Medium Load Member
    Member Since
    Feb 2010
    Location
    Tn.
    Trucker?
    42 Years
    Posts
    532
    Thanks
    1,200
    Thanked: 337 Times
    Quote Originally Posted by bubbanbrenda View Post
    Without a picture I'm not sure, but it sounds like a unloader valve. I would replace it first before I bought a complete compressor.
    What he said, they're known for being troublesome.

  4. #4
    Banned or Retired
    Member Since
    Feb 2010
    Location
    Siler City, NC
    Trucker?
    22 Years
    Posts
    347
    Thanks
    49
    Thanked: 85 Times
    Quote Originally Posted by ahmadali04 View Post
    Hi. I have a Bendix Air Compressor on a CAT C15, that is leaking air from the safety valve on top of the compressor. It is causing the air compressor to run all the time. Any ideas on what it could be? Thanks.
    If the pressure is not too high, then the brass safety valve is just leaking....not the governor. Assuming you mean the brass 7/8 socket size valve screwed in the side of the compressor head.

  5. #5
    Heavy Load Member
    Member Since
    Jan 2010
    Location
    hanover pa
    Trucker?
    8 Years
    Posts
    705
    Thanks
    4
    Thanked: 91 Times
    mine did the same thing on the safety valve put a new valve in and problem solved hope thats all you need

  6. #6
    Bobtail Member
    Member Since
    Jan 2011
    Trucker?
    No Answer
    Posts
    27
    Thanks
    3
    Thanked: 3 Times
    Quote Originally Posted by CatPowerC15 View Post
    If the pressure is not too high, then the brass safety valve is just leaking....not the governor. Assuming you mean the brass 7/8 socket size valve screwed in the side of the compressor head.
    I replaced the brass safety valve, and it is still leaking a little bit. It's a lot better than before, where before it was constantly leaking at high pressure. Now, I can hear it just a little bit, with the parking brake on, but it seems to go away when, I release parking and trailer brakes..Is this normal? Thanks.

  7. #7
    Bobtail Member
    Member Since
    Sep 2013
    Trucker?
    33 Years
    Posts
    2
    Thanks
    0
    Thanked 1 Time in 1 Post
    Hey guys , this is helpful , I have the same problem with the unloader valve ? WHERE CAN I PURCHASE ONE . Thank you .. Bob @ chutetrans@yahoo.com

  8. #8
    Medium Load Member
    Member Since
    Feb 2010
    Location
    Tn.
    Trucker?
    42 Years
    Posts
    532
    Thanks
    1,200
    Thanked: 337 Times
    Quote Originally Posted by Bob Chute View Post
    Hey guys , this is helpful , I have the same problem with the unloader valve ? WHERE CAN I PURCHASE ONE . Thank you .. Bob @ chutetrans@yahoo.com
    Most any Pete, KW dealer, or TruckPro, Fleetpride, and maybe Cat(but would probably be more expensive).

  9. #9
    Light Load Member GP1500SC's Avatar
    Member Since
    Sep 2011
    Location
    mo
    Trucker?
    12 Years
    Posts
    92
    Thanks
    16
    Thanked: 27 Times
    Cat has a updated unloader valve it has the oring on the out side of the plunger instead of the inside, I have replaced the old style on a BSX and a MXS so don't when they started coming with the newer design.
    I just ordered them both times and got the newer ones with out asking.

  10. The Following User Says Thank You to GP1500SC For This Useful Post:


  11. #10
    Bobtail Member
    Member Since
    Sep 2013
    Trucker?
    33 Years
    Posts
    2
    Thanks
    0
    Thanked 1 Time in 1 Post
    Puncher , thanks man , I did get one , and low and behold .... ALL FIXED , Thanxs for reply

  12. The Following User Says Thank You to Bob Chute For This Useful Post:


Page 1 of 2 12 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •