7020 Air Conditioner Question
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=159973
Printed Date: 14 Apr 2026 at 5:21pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: 7020 Air Conditioner Question
Posted By: Jack(Ky)
Subject: 7020 Air Conditioner Question
Date Posted: 13 Apr 2019 at 4:41pm
Has anyone ever used a thinner AC condenser on their 7000 series. If so does it cool alright.
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'59 D14 '68 170 Diesel '81 7020 40 All Crop
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Replies:
Posted By: fourthgeneration
Date Posted: 13 Apr 2019 at 7:56pm
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I wouldn’t cut down on the condenser size especially on a R134a conversion. Now a parallel flow condenser that you see in modern vehicles will be physically thinner but perform the same or better.
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Posted By: Jack(Ky)
Date Posted: 13 Apr 2019 at 9:43pm
That's what I am looking at buying. It has about the same dimensions except the thickness. Thanks
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'59 D14 '68 170 Diesel '81 7020 40 All Crop
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Posted By: fourthgeneration
Date Posted: 13 Apr 2019 at 11:32pm
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They do catch debris easier so you will have to clean it regularly and we’ll. You could make a screen that slides in front of it.
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Posted By: Joe(TX)
Date Posted: 14 Apr 2019 at 11:03pm
You really need a thicker one if you want it to cool with R134A.
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1970 190XT, 1973 200, 1962 D-19 Diesel, 1979 7010, 1957 WD45, 1950 WD, 1961 D17, Speed Patrol, D14, All crop 66 big bin, 180 diesel, 1970 170 diesel, FP80 forklift. Gleaner A
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Posted By: Michael V (NM)
Date Posted: 14 Apr 2019 at 11:07pm
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my 7060 has the stock condenser, been changed to 134, it cools good..anyways,, I stay cool...
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Posted By: Hurst
Date Posted: 15 Apr 2019 at 7:51am
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You could double them up possibly? Connect the compressor discharge line to the rear condenser inlet, then make a line from the outlet of the rear condenser to the inlet of the front condenser, then that outlet would go to the line going to the expansion valve. You want the front condenser to do the last part of the cooling because it is getting fresh cooler air. Another thing to consider is the construction quality of the aftermarket unit. They will take a pretty good beating in a tractor compared to a car.
Hurst
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1979 Allis Chalmers 7000
5800 Hours
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Posted By: Jack(Ky)
Date Posted: 16 Apr 2019 at 7:21am
I really don't use this tractor all that much so a lighter weight condenser might hold up. I did a little research on it and supposedly the parallel flow condensers cool the freon better than the old design. I can repair the old one and I had rather have if I think I could trust it.
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'59 D14 '68 170 Diesel '81 7020 40 All Crop
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Posted By: Hurst
Date Posted: 16 Apr 2019 at 12:40pm
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My 7000 has had a silver soldered repair in it that was there when I bought it in 2007 and it has never leaked at the condenser. You might look at something like Stay-Brite #8 solder to fix it if you decide to go that route. Keep us posted if go the aftermarket parallel route, I'm sure there are a few people who would be interested in that option if it turns out to work.
Hurst
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1979 Allis Chalmers 7000
5800 Hours
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