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Slinging oil

mhfd112 on Wed March 19, 2008 6:20 AM User is offline

Year: 1977
Make: Chevy
Model: truck

I put in a new shaft seal and the compressor is slinging oil for sure now. I followed the directions from the link Chick had posted in an earlier post.

Any ideas as to what I may have done wrong?

GM Tech on Wed March 19, 2008 10:02 AM User is offline

A little detail will help.

I assume this is an R-4 - although there were still A-6 compressor applications in 77- There is a chance you used the wrong seal- or more likely, that you damaged the seal when installing it-- did you use a shaft seal protector (commonly callled "dog pecker") tool which covers the thread and keyway of the shaft as you slide the new seal over the tool? Did you lubricate the sealing areas of the seal-- I have done thousands of shaft seal replacements- and have made almost every mistake imagineable- so I know what can go wrong and what it takes to do it right- I am going to assume you used a double lip seal but "cut" the seal upon installation- thus a new seal is in order......let us know....

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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......

mhfd112 on Wed March 19, 2008 6:06 PM User is offline

Sorry for the lack of details.

It is an A6. I did use the dp to protect the seal. I bought the gm seal service kit and double lipped seal from Ackits. I did put a dab of assembly lube on the seal before installation.

Maybe the assembly lube isn't compatable with the rubber seal?

plongson on Fri March 21, 2008 7:26 PM User is offlineView users profile

Leaking seal problems could pretty much be attributed to...

1.) Wrong seal
2.) Right seal damaged during installation (most likely)
3.) Bad shaft (roughed up shaft wiped out new seal)
4.) Bearings shot causing shaft to run-out (wobble)
5.) Seal was old stock, set on shelf too long, rubber not pliable (not likely)

These just off the top of my head...

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Vibration Analyst in Power Generation

TRB on Sat March 22, 2008 5:48 PM User is offlineView users profile

Never touch the face of a seal!!!!!!

I use the backing the seal came in and pour some mineral oil on it. Very carefully not to touch the face of the seal I dip the face in the oil.

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

mhfd112 on Sat March 29, 2008 10:19 AM User is offline

I guess I'll try it again. I just ordered a couple more double lip seals.

The first time I didn't put any lube on the seal protector. Could that have contributed to my poor results?

GM Tech on Sat March 29, 2008 11:23 AM User is offline

sure- you mave have even inverted the seal upon installation- or put it in backwards- the lips protrude toward the compressor- not the clutch- looks to the normal guy to be the wrong way- that it would not slide ove the shaft right- but it does......

-------------------------
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......

mhfd112 on Sat March 29, 2008 5:12 PM User is offline

If I put the seal in backwards the seal remover tool won't remove the seal will it?

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