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A6 Compressor Shaft Seal?

jamyers on Wed August 27, 2014 1:52 PM User is offlineView users profile

Year: 1971
Make: Buick
Model: LeSabre
Engine Size: 455
Refrigerant Type: 134a

Several (8 or 9??) years ago, I installed a new ackits.com A6 Compressor, converted to R134a, re-calibrated the POA valve, etc. Unfortunately, then the car sat for 5 years (long story), but I got it running again back in April.

Once I got the engine running again, it appeared that the A/C system had lost a good bit of it's R134a while sitting (it showed 20psi sitting there, and took right at 24 oz of refrigerant to get the pressures / temps back up to where my old notes showed best performance.

Now, after a couple of months of being operated about once every other week, the a/c system has lost refrigerant again, and there is a fair amount of oil that's been slung out of the compressor front seal, making a mess of my nice clean engine compartment.

So I'm assuming that the most likely culprit is that front seal, but which seal is the best one to get - and do I need to remove the old one before getting a new one because of shaft sizes, etc?

Any guidance would be appreciated.

James

Edited: Wed August 27, 2014 at 1:56 PM by jamyers

jamyers on Wed August 27, 2014 1:57 PM User is offlineView users profile

Whoops, my apologies for posting in the wrong forum. Can't find the delete button or I'd repost...

TRB on Wed August 27, 2014 2:03 PM User is offlineView users profile

MT2105 - Small Shaft


MT2230 Large Shaft

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jamyers on Wed August 27, 2014 7:19 PM User is offlineView users profile

Is there any way to tell which one I need without taking everything apart first?

wptski on Thu August 28, 2014 7:23 PM User is offline

Quote
Originally posted by: jamyers
Is there any way to tell which one I need without taking everything apart first?
You have to measure the shaft size so you have to pull the clutch plate off at least. I'm not sure about the A6 but the HR I rebuilt had a step in the shaft so the diameter the seal rides on was larger but only where the seal was. Not sure if vernier calipers would reach down that far. I did the gaskets as well so mine was all apart and no problem then.

Here's a link to replacing a seal: Shaft Seal

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