Automotive Air Conditioning Information Forum (Archives)
FS10 compressor replace shaft seal or replace the compressor
kell490 on 
Sun June 02, 2013 2:27 PM 
Year: 1991
Make: Ford
Model: Bronco
Engine Size: 5.8L
Refrigerant Type: R12
Ambient Temp: 108
Country of Origin: United States
My brother has owned this 91 bronco for years he said back in the 90's the R12 leaked out and he never fixed it didn't live in Phoenix then but he does now he really wants it working 
. 5 years ago he had to pull the heads due to a burnt valve during repair he kinked the evaporator line right where the orifice tube is installed. When we tried to bend it straight it cracked. Against my judgement we JB-welded the crack pulled a vac for 1 hours it held 30 inches charged with R12, and it ran cold for a few weeks then he was driving it and the JB weld let lose he heard the sound of $100 of R12 escaping. Now he has replaced the evaporator, and I wanted to replace the shaft seal on the Fx-15 or FS-10 compressor not sure which one he has. I got the seal kit but now I see I need some $50 tools to do it my question is what do you guys suggest we do here at this point I have already purchased 4 more cans of R12 so we will use R12 again, but I don't want it to leak out or the compressor goes south in a month or two. When it was running for the 2 weeks the compressor seemed okay it didn't make any noise, but I do see a lot of dirt on the bottom side of the compressor possibly indicating mineral oil leaking. The compressor on his bronco is mounted high up not low so that dirt is suspect to me of a leak possible what caused the leak 15 years ago. Should we just replace the compressor with a new one, or should we go with this original one? I plan on flushing, and of course pull a vacuum for 3 hours before charging. I could pull the 3 hour vac and see if it holds 30inches and hope the compressor never fails I have heard the FX-15 was known for black death. I know the way my brother thinks he will won't want to spend the money on a new compressor, but I don't want to blow more money on R12. If we had a 134 system be a different story, but R-12 works so well in this system when its working well blows really cold. 
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WyrTwister on Sun June 02, 2013 2:42 PM
Never worked on a Ford compressor . I do know many ( but not all ) of the special purpose tools needed for a GM compressor can be " borrowed " from the local auto parts stores .
I just replaced the seal on a GM R4 compressor , Saturday . On a GM V5 , a couple of weeks ago .
Have you fixed the issue with the broken line ? I would think that would be first on the list .
Do some searching on youtube for videos on how to replace the seal on the compressor .
Do you know the brand and model number of the compressor ?
God bless
Wyr
kell490 on Sun June 02, 2013 3:51 PM
The broken line was part of the evaporator which has been replaced. We plan on flushing the system and replacing the remainder o-rings with new ones. I don't know much about these FS10/FX-15 compressors what I have read the FX-15 was prone to failure. I checked the local autopart stores none have the seal tool kit only the O-tube removal tool, and clutch removal tools. It's probably not worth attempting to do the seal without the proper tools using some sort of improvised tool. I could run it down tomorrow to AMA I'm only about 10 miles from them have them take a look at the compressor.
Edited: Sun June 02, 2013 at 3:53 PM by kell490
TRB on Sun June 02, 2013 5:13 PM
FS-10 is not worth trying to repair in my opinion.
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kell490 on Sun June 02, 2013 6:40 PM
Should I just buy a new FS10 or re-manufactured FS10? Is it possible to test if the system is sealed by holding a vacuum? Like 30inches for 1 hour?
mk378 on Sun June 02, 2013 6:43 PM
Springlocks and shaft seals may hold vacuum but not pressure. You should test both ways before committing to charge with R-12.
TRB on Sun June 02, 2013 7:38 PM
New only on FS10.
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kell490 on Sun June 02, 2013 9:24 PM
QuoteOriginally posted by: mk378
Springlocks and shaft seals may hold vacuum but not pressure. You should test both ways before committing to charge with R-12.
I would not know what to pressure test it with 134A would not work right in this system it seemed to hold R12 for a few weeks until that evap let go.
I found a tool rental place near me in North Phoenix that might have the shaft seal tool set for rent if there prices are reasonable is there any gotchas with the shaft seal on the FS10? Could I make it worse?
WyrTwister on Mon June 03, 2013 7:20 AM
I had to buy the seal removal tool for the GM compressor . No local store had one to rent . Long story .
Do not try to field engineer a seal removal tool . Bad idea ! :-(
Freight and all , the tool cost about $ 25 - $30 . With it , seal removal was not difficult at all .
One of the youtube videos showed re-sealing a Denso compressor . He said some older ones , seal removed from front , like the GB's I did . Think he said the newer ones , you removed the end housing from the compressor and knocked the seal out from the back . Then replaced the gaskets on the compressor body , where you took the compressor apart .
God bless
Wyr
TRB on Mon June 03, 2013 11:48 AM
New compressor runs $155.00. FS10 are not that great of a compressor to begin with. Hate to put a lot of effort in a compressor that have a short life.
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kell490 on Tue June 04, 2013 12:40 AM
Where can I get one for $155 I see re-manufactured ones for that?
TRB on Tue June 04, 2013 10:14 AM
Arizona Mobile Air.
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