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Bus Discussion => Bus Topics ( click here for quick start! ) => Topic started by: 5B Steve on November 25, 2011, 06:16:43 PM

Title: OIL LEAK BETWEEN HEAD AND COMPRESSOR
Post by: 5B Steve on November 25, 2011, 06:16:43 PM

  I noticed that I have a steady drip coming in front of the head behind the compressor on the right side looking

  from the rear. I used a can of break clean and sprayed the area off. Took some rags and wiped everything that I

  could get my fingers in between. First thing I noticed was, what appears to be a hole on the face of the head

about the size of the tip of your for finger. Feels like the size of the weep hole on the water pump. On the other

end looks like there are 2-3 holes with Allen screws in there. I hope I'm  describing this right. Now the question

is, without seeing, is there an Allen screw that has backed out or is it a hole in the head?  Motor is a 8V-92N

In my MCI-5B.


Steve 5B.....  Thanks!
Title: Re: OIL LEAK BETWEEN HEAD AND COMPRESSOR
Post by: Jriddle on November 25, 2011, 06:29:11 PM
Not sure for you but I had leak in compressor gasket in same area just needed to build new gasket to get mine to stop.


John
Title: Re: OIL LEAK BETWEEN HEAD AND COMPRESSOR
Post by: 5B Steve on November 25, 2011, 06:43:19 PM

  John, was the gasget on the back side of the compressor?


   Steve 5B.....
Title: Re: OIL LEAK BETWEEN HEAD AND COMPRESSOR
Post by: Jriddle on November 25, 2011, 06:52:21 PM
Between back of engine and the compressor yes. It was making a mess all over back of bus.

John
Title: Re: OIL LEAK BETWEEN HEAD AND COMPRESSOR
Post by: 5B Steve on November 25, 2011, 06:58:24 PM
Quote from: 5B Steve on November 25, 2011, 06:43:19 PM

  John, was the gasget on the back side of the compressor?


   Steve 5B.....

  Misspelled the word GASKET, hit the letter g instead of the k.
Title: Re: OIL LEAK BETWEEN HEAD AND COMPRESSOR
Post by: Jriddle on November 25, 2011, 06:58:38 PM
I didn't unhook the cooling lines from my compressor. I just took off enough to pull it out a bit and built a new gasket with a ball peen hammer and then reinstalled compressor.

John
Title: Re: OIL LEAK BETWEEN HEAD AND COMPRESSOR
Post by: Busted Knuckle on November 26, 2011, 09:08:42 AM
Steve first off try tightening the compressor bolts! On more than one occasion I have found this to be a source of a leak and once tightened all was good for many many miles!
;D  BK  ;D

Oh and yes it's possible you've lost a plug. I've seen that as well! (but not as often as a loose compressor!)
Title: Re: OIL LEAK BETWEEN HEAD AND COMPRESSOR
Post by: 5B Steve on November 26, 2011, 03:50:28 PM
Quote from: Busted Knuckle on November 26, 2011, 09:08:42 AM
Steve first off try tightening the compressor bolts! On more than one occasion I have found this to be a source of a leak and once tightened all was good for many many miles!
;D  BK  ;D

Oh and yes it's possible you've lost a plug. I've seen that as well! (but not as often as a loose compressor!)


Bk, thanks for the info, I'll try that. What is the object of having plugs there anyway?

  Steve 5B......
Title: Re: OIL LEAK BETWEEN HEAD AND COMPRESSOR
Post by: luvrbus on November 26, 2011, 08:04:34 PM
Those plugs are there for when you mate 2- 8v92 together and it becomes a 16v92

good luck
Title: Re: OIL LEAK BETWEEN HEAD AND COMPRESSOR
Post by: artvonne on November 26, 2011, 10:45:02 PM
Quote from: luvrbus on November 26, 2011, 08:04:34 PM
Those plugs are there for when you mate 2- 8v92 together and it becomes a 16v92

good luck

  You know, with a lil doghouse out the back and some dolly wheels, that old 5B could really haul with a 16V92. Just sayin.
Title: Re: OIL LEAK BETWEEN HEAD AND COMPRESSOR
Post by: artvonne on November 26, 2011, 10:49:11 PM
Quote from: Busted Knuckle on November 26, 2011, 09:08:42 AM
Steve first off try tightening the compressor bolts! On more than one occasion I have found this to be a source of a leak and once tightened all was good for many many miles!

  Boy if that aint the truth, ive had quite a few myself. The worst was a 94 F350, the diesel was dripping everywhere, everything was soaked with oil. Valve covers, front cover, oil pan, it was all loose. Spent a couple hours or so tightening bolts and screws, there were a LOT loose, never dripped a drop in the 6 years I owned it.
Title: Re: OIL LEAK BETWEEN HEAD AND COMPRESSOR
Post by: 5B Steve on November 27, 2011, 05:55:17 AM
Quote from: luvrbus on November 26, 2011, 08:04:34 PM
Those plugs are there for when you mate 2- 8v92 together and it becomes a 16v92

good luck

  Would it be possible one of those plugs could have vibrated loose if it isn't the compressor gasket?


  Steve 5B.....
Title: Re: OIL LEAK BETWEEN HEAD AND COMPRESSOR
Post by: Busted Knuckle on November 27, 2011, 07:34:40 AM
Quote from: 5B Steve
  Would it be possible one of those plugs could have vibrated loose if it isn't the compressor gasket?
  Steve 5B.....

Yes it's possible and has happened, but from my experience the bolt on accessories bolt loosen more often than those plugs.
;D  BK  ;D