TRACTOR PARTS Allis Chalmers Case & David Brown Farmall & International Ferguson Ford & New Holland John Deere Massey Ferguson Massey Harris Minneapolis Moline Oliver & Cockshutt Kubota / Yanmar

TRACTOR MANUALS

Allis Chalmers	Case	Farmall IH	Ford 8N,9N,2N	Ford
Ferguson	John Deere	Massey Ferguson	Minn. Moline	Oliver

Tractor Talk Discussion Forum

5488 IHC-Converting R12 to R134A

Welcome Guest, Log in or Register

Author

rtucker

04-19-2008 07:59:56

Report to Moderator

Forgot to mention that I have already changed the receiver dryer, expansion valve, 2 out of the 3 hoses, blown out remaining components (pice by piece), replaced the low pressure switch, charged system, added 4 oz. oil. Do I need to replace low pressure switch, if not, is this compatable with R134? I have no leaks in the system.

[Log in to Reply] [No Email]

Bob

04-19-2008 08:04:39

Report to Moderator

Re: 5488 IHC-Converting R12 to R134A in reply to rtucker, 04-19-2008 07:59:56

What kind of oil did you use?

[Log in to Reply] [No Email]

rtucker

04-19-2008 08:09:34

Report to Moderator

Re: 5488 IHC-Converting R12 to R134A in reply to Bob, 04-19-2008 08:04:39

I used Ester Oil.

[Log in to Reply] [No Email]

rtucker

04-19-2008 08:20:30

Report to Moderator

Re: 5488 IHC-Converting R12 to R134A in reply to rtucker, 04-19-2008 08:09:34

I am trying to find out what the proper charge for this system is or any other info. 3.8 lb.? I have gotten different responses from various dealers.

[Log in to Reply] [No Email]

Peteh

04-20-2008 20:52:09

Report to Moderator

Re: 5488 IHC-Converting R12 to R134A in reply to rtucker, 04-19-2008 08:20:30

The AP Air site calls for 3.5 lbs of 134A. (See link below)

AP Air

[Log in to Reply] [No Email]

rtucker

04-21-2008 16:42:33

Report to Moderator

Re: 5488 IHC-Converting R12 to R134A in reply to Peteh, 04-20-2008 20:52:09

Thank you. Very helpful. Nobody could tell me what was in this unit.

[Log in to Reply] [No Email]

Bob

04-19-2008 12:32:46

Report to Moderator

Re: 5488 IHC-Converting R12 to R134A in reply to rtucker, 04-19-2008 08:20:30

About 80% of the amount of R-12 that was originally "spec'ed". (Sorry, I don't know that figure!)

As you add refrigerant, the system will start to cool.

The large (suction) line leaving the evaporator will be at ambient temp. As you add R-134, the line will eventually start to cool. When this happens, you are getting close to the correct charge. If you continue to add refrigerant, eventually, the suction line will be cool and have condensation all the way to the compressor.

Charge it beyond the condensation getting CLOSE to the compressor, and you risk liquid getting into the compressor and breaking things.

I tend to UNDERCHARGE these sytems a bit, as the compressor is already working harder than originally, since R-134 runs a higher "head pressure" for a given condensor temperature.

I feel that a systeem cooling at perhaps 90% of capacity is better than trying for 100%-plus, and blowing a line or a compressor.

[Log in to Reply] [No Email]

rtucker

04-21-2008 16:40:56

Report to Moderator

Re: 5488 IHC-Converting R12 to R134A in reply to Bob, 04-19-2008 12:32:46

Thank You.

[Log in to Reply] [No Email]

[Options] [Printer Friendly] [Posting Help] [Return to Forum] [Log in to Reply]

TRACTOR PARTS	TRACTOR MANUALS

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home | Forums

Copyright © 1997-2023 Yesterday's Tractor Co.
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy