Gathering A/C System Information
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Senior User
Joined: Sep 2014
Posts: 153
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From: Jackson, Wyoming
Gathering A/C System Information
I'm wanting to get the A/C working in my truck. Everything is there and complete minus the belt.
From what I've read we have FS6 compressors. I've pulled mine off as it's free and feels as though it's rebuildable.
I plan to rebuild the compressor myself, I've already bought the Four Seasons compressor gasket/seal kit.
I also plan to purchase an o-ring set, a new evaporator, condenser, schrader valves, caps and convert it over to R134A after thoroughly flushing everything.
I've done this on a couple other vehicles but I don't really know what to expect with this one. Any advice on what to look for, expect, or any input at all is welcome.
From what I've read we have FS6 compressors. I've pulled mine off as it's free and feels as though it's rebuildable.
I plan to rebuild the compressor myself, I've already bought the Four Seasons compressor gasket/seal kit.
I also plan to purchase an o-ring set, a new evaporator, condenser, schrader valves, caps and convert it over to R134A after thoroughly flushing everything.
I've done this on a couple other vehicles but I don't really know what to expect with this one. Any advice on what to look for, expect, or any input at all is welcome.
Mountain Pass
Joined: Oct 2015
Posts: 215
Likes: 4
From: Buffalo,Tx.
You pays your money and you takes your chances.
That is what I did on mine awhile back and it is working great!
Don't forget your drier and orifice valve also.
With all you are doing some new hoses are not that much more and will help reduce
contaminants.
Lot of pro and con on flushing.
Just remember,...clean,..clean....clean!
That is what I did on mine awhile back and it is working great!
Don't forget your drier and orifice valve also.
With all you are doing some new hoses are not that much more and will help reduce
contaminants.
Lot of pro and con on flushing.
Just remember,...clean,..clean....clean!
Elder User
Joined: Dec 2000
Posts: 570
Likes: 1
From: Austin Texas (area)
Why convert to 134? R12 is readily available on ebay, a little pricey to be sure.
There are some good AC flushing fluids available. Flush the evap and conds in both directions.
Anyway, make sure you start with only 80% of the pressures listed for the system when it was R12. Once the system is up/running some 134 can be added in small amounts to get the pressure gauges happy.
Be sure to change every 0-ring to the 'green' type and use Nylog on the 0-rings and threaded fittings. If the hoses are from 1986, I'd change them. 134 is a higher-pressure refrigerant, therefore old hoses could be a problem area. Change the schrader valves to the new plastic/nylon type. Schrader valves are another 'could be' problem area. New orifice tube and accumulator. Pull a vacuum for a long time....I do 12hr....and if no drop proceed.
I had to change my evaporator due to a hole/holes about 15yrs from '81. Not too bad of a job to replace it.
Hope this helps.
Dave
There are some good AC flushing fluids available. Flush the evap and conds in both directions.
Anyway, make sure you start with only 80% of the pressures listed for the system when it was R12. Once the system is up/running some 134 can be added in small amounts to get the pressure gauges happy.
Be sure to change every 0-ring to the 'green' type and use Nylog on the 0-rings and threaded fittings. If the hoses are from 1986, I'd change them. 134 is a higher-pressure refrigerant, therefore old hoses could be a problem area. Change the schrader valves to the new plastic/nylon type. Schrader valves are another 'could be' problem area. New orifice tube and accumulator. Pull a vacuum for a long time....I do 12hr....and if no drop proceed.
I had to change my evaporator due to a hole/holes about 15yrs from '81. Not too bad of a job to replace it.
Hope this helps.
Dave
Thread Starter
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Senior User
Joined: Sep 2014
Posts: 153
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From: Jackson, Wyoming
Thanks Dave. You are very helpful.
Nylog, noted. Didn't know about this stuff.
Seems like I was just about right in what I expected. Doesn't seem like anything too special to get the job done. Thanks again.
Nylog, noted. Didn't know about this stuff.
Seems like I was just about right in what I expected. Doesn't seem like anything too special to get the job done. Thanks again.
Elder User
Joined: Dec 2000
Posts: 570
Likes: 1
From: Austin Texas (area)
Dave
Thread Starter
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Senior User
Joined: Sep 2014
Posts: 153
Likes: 0
From: Jackson, Wyoming
You pays your money and you takes your chances.
That is what I did on mine awhile back and it is working great!
Don't forget your drier and orifice valve also.
With all you are doing some new hoses are not that much more and will help reduce
contaminants.
Lot of pro and con on flushing.
Just remember,...clean,..clean....clean!
That is what I did on mine awhile back and it is working great!
Don't forget your drier and orifice valve also.
With all you are doing some new hoses are not that much more and will help reduce
contaminants.
Lot of pro and con on flushing.
Just remember,...clean,..clean....clean!
I plan on finding new hoses if and when I do this.
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