Farm Equipment - Adding 134a

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Adding 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=56889
Printed Date: 06 Sep 2025 at 5:41am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Adding 134a

Posted By: Dave H
Subject: Adding 134a
Date Posted: 15 Sep 2012 at 7:06am

I get the job of adding 134a to the neighbor's equipment. Been doing it kinda by the seat of my pants.

Can someone referr me to a handy dandy chart that gives high/low pressure and outside air temps or whatever.

I got the guages and hook ups just not the reference. thanx

Replies:

Posted By: cornbinder
Date Posted: 15 Sep 2012 at 8:58am

on cars&trucks it can vary from 25-35 psi on the low (fill side) varies though with different manufactures. general rule of thumb is fill to 85% or the r-12 fill capacity.

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