CONVERTING A/C SYSTEM 12 TO 134A
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=18344
Printed Date: 06 Feb 2025 at 9:47pm
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Topic: CONVERTING A/C SYSTEM 12 TO 134A
Posted By: SIMPLICITY
Subject: CONVERTING A/C SYSTEM 12 TO 134A
Date Posted: 16 Sep 2010 at 8:43pm
HELLO
I NEED TO CONVERT A LATE MODEL BLACK BELLY 7060 A/C SYSTEM 12 TO 134A. . WOULD ANYONE KNOW WHAT IS NEEDED?, WHERE THE THE PARTS CAN BE PURCHASED? AND ANY PARTS #'S WOULD HELPFUL. THANKS
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Replies:
Posted By: jb from md
Date Posted: 16 Sep 2010 at 8:51pm
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i dont have part numbers but when we did my 8050 we used a retro fit kit this gives you the o rings,fittings and oil. i suggest taking the compresser off and draining the oil, replace with new oil, get some ac flush to flush out the system this gets rid of old oil and residue in the lines, condenser and evaporator. also replace the dryer and add new oil to that. we have found that when converting to 134 we use about 80% of the r12 capacity we do this alot at the garage i work at and have always had good luck.. its not that bad to do .. hope this helps you ....Jb
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Posted By: Roddo
Date Posted: 16 Sep 2010 at 8:53pm
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If it is still r12, make sure you get conversion oil. The r12 oil and the 134a oil dont like each other.
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Posted By: Eugene
Date Posted: 17 Sep 2010 at 5:48pm
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There can be a problem using the old hoses from the R12 system. The hoses need to be barrier hose. This is because R134a contains Chlorine and will gradually disolve the hose. You will probably get years out of it, but it will eventually make the hose porous. When this happens its impossible to find the leak.
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