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compressor oil leak?

pkgmc on Sat August 23, 2008 1:28 AM User is offline

Year: 1999
Make: GMC
Model: Sierra
Engine Size: 5.3
Refrigerant Type: 134

I've got a 99 GMC Sierra and I noticed the other day oil leaking from the front of the compressor/clutch. The compressor is not making any noise and the air conditioning works just fine. I thought maybe this oil was coming from somewhere else but after looking closer I'm convinced its coming from the clutch area. Oil has lightly covered other parts 360 degrees around the clutch. I'll try and take a picture and post it in the morning.

Is this a typical failure mode for this compressor?
Any way to fix or am I looking at a complete compressor replacement?

Thanks!

TRB on Sat August 23, 2008 10:21 AM User is offlineView users profile

Sounds like the shaft seal is bad. They can be replaced with the proper tools.

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pkgmc on Sat August 23, 2008 10:41 AM User is offline

Here's a picture. Seal leak?

TRB on Sat August 23, 2008 10:57 AM User is offlineView users profile

I edited you image, size was a little large. Very good chance its a shaft seal leak by the image. I would use an electronic leak detector and confirm this is you issue.

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When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: ACKits.com

pkgmc on Sat August 23, 2008 11:03 AM User is offline

Thanks. Will try the leak detector. If the shaft seal is leaking would it be better to replace the seal or get a new compressor? The truck is 10 years old and has 75,000 miles on it. I understand there are other compressor manufacturers that make a much better product and if I have to remove the compressor anyway......

One other question. I've also read that changing a compressor due to a leak does not require a system flush. Is that correct? Just trying to figure out what all needs to be done.

Thanks!

TRB on Sat August 23, 2008 11:51 AM User is offlineView users profile

Personally if you don't have the correct tools I would suggest a new compressor.

I show two models for this vehicle.

COMP. TYPE=10S17F; CLUTCH TYPE=4 Gr.; w/Factory AC

COMP. TYPE=H6-SW; CLUTCH TYPE=4 Gr.; w/Factory AC

Let me know which one you have and I can check on it for you.

-------------------------

When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: ACKits.com

GM Tech on Sat August 23, 2008 12:53 PM User is offline

Yours is low mount- right? Since it is a 5.3L--- also that was a mixed bag yr ear for compressors-- I do know that the DelphiOEM pump has the double lip seal shaft seal-- is you r compressor a nippondenso unit? see if you can read the label. i

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The number one A/C diagnostic tool there is- is to know how much refrigerant is in the system- this can only be done by recovering and weighing the refrigerant!!
Just a thought.... 65% of A/C failures in my 3200 car diagnostic database (GM vehicles) are due to loss of refrigerant due to a leak......

pkgmc on Sat August 23, 2008 1:28 PM User is offline

Here's a few numbers I found on the compressor:
1136610
120881300
Delphi (Harrison) 6610

Its mounted low and looks like quite a project to get it out. Here's some pics of the looking up from underneath the truck.


TRB on Sat August 23, 2008 2:00 PM User is offlineView users profile

I edited your images again. Feel free to post images but please try and limit the size to 800 pixels. Readers with dial up connections will be able to view the page in a timely manner with smaller images.

Plug and Switch location I saying that is the,

Compressor Type H6-SW Clutch Type 4 Gr. Coil Clocking 0.0833 Coil Connector Blue Pin Clutch Diameter 4.33` Number Of Grooves 4-poly

Should be our item number
20-10869

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chris142 on Sat August 23, 2008 2:34 PM User is offline

Quote
Originally posted by: pkgmc




Its mounted low and looks like quite a project to get it out. Here's some pics of the looking up from underneath the truck.



It comes right out the top between the mount, exhaust manifold and heater hoses. Pull the belt off, lines and the bolts. One bolt wont come out when in the truck. Once loose and working from the top pull the rear up and twist it untill you get the right angle of the angle and it will pull right out.

Goes back in the same. Make sure you put the one bolt back into the compressor before you slide it back home.

pkgmc on Sat August 23, 2008 2:45 PM User is offline

Thanks for the info and sorry about the pic size. I thought I had reduced it but I guess not nearly enough.

About replacement - should I replace any other parts at the same time? System is working fine at the moment but I doubt I have much time left.

TRB on Sat August 23, 2008 3:13 PM User is offlineView users profile

Images not really an issue, just a suggestion on the size. I would replace the accumulator also if it were my vehicle or a customers vehicle.

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When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: ACKits.com

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