Automotive Air Conditioning Information Forum (Archives)

Provided by

We've updated our forums!
Click here to visit the new forum

Archive Home

Search Auto AC Forum Archives

1987 Chevy R134 conversion

JeepSJ on Tue March 22, 2016 7:01 PM User is offlineView users profile

Year: 1987
Make: Chevy
Model: R30
Engine Size: 454
Country of Origin: United States

Hi all,

Just picked up a new project vehicle - 1987 CC Dually, 454, TH400. Rust-free Arizona vehicle, with only 86K original miles. Bought it from a neighbor, who bought it from another neighbor (original owner) about 2 years ago. A 134 conversion had been started on it, but original owner doesn't live in the area any longer so I can't get any details. The A6 compressor appears to be new, as does the accumulator/receiver-dryer and most of the lines. Adapter fitting have also been installed on the charge ports. Receiver/dryer *may* have been upgraded as it appears to be the same as on one of my later model vehicles.

Here are the questions -
1) Will the A6 do OK with R134, or should I look at converting to a R4 or Sanden type?

2) How can I tell if any oil has been added to the system? And what type?

3) Evap and condenser appear to still be the originals. Should I pull and flush?


TRB on Tue March 22, 2016 8:38 PM User is offlineView users profile

1 With proper oil the A6 will be fine.

2: You won;t really be able to tell. Only way to know is to flush the system and add back the correct oil.

3. I always suggest starting with a clean system.


When considering your next auto A/C purchase, please consider the site that supports you:

JeepSJ on Wed March 23, 2016 1:48 PM User is offlineView users profile

Thanks! Besides checking the oil and flushing the evap and condenser, is there anything else that I should look out for? I've read through some older posts where someone was recommending a Ford "blue" orifice tube?

Edited: Wed March 23, 2016 at 2:13 PM by JeepSJ

mk378 on Wed March 23, 2016 3:25 PM User is offline

If it is at zero pressure now, do a static leak test before taking anything apart.

igor on Wed March 23, 2016 4:23 PM User is offline

a6 will work with r134
a6 uses pag 150 oil with r 134
a6 leaks on front seals...i tried the trick on this'webiste...but it didn t worked for me...i think my front axle is too much used
a6 are not selled new but remanufactured so it can i bought s6 compressor at rockauto
you need a new dryer and a variable orifice tube
you need barrier hoses too...repro or rebuilt
you need a new setting if you have a cycling switch

Back to Automotive Air Conditioning Forum

We've updated our forums!
Click here to visit the new forum

Archive Home

Copyright © 2016 Arizona Mobile Air Inc.