Air conditioner on 7020
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=135525
Printed Date: 07 Nov 2025 at 5:38am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Air conditioner on 7020
Posted By: chuck linn
Subject: Air conditioner on 7020
Date Posted: 26 Feb 2017 at 6:45am
| Which a6 car compressor will fit a 7020 and have the right belt offset |
Replies:
Posted By: Joe(TX)
Date Posted: 26 Feb 2017 at 7:21am
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I have used one off of a Chevy pickup. The only difference is the truck has a slightly smaller pulley. I think it's 5 5/8 on the tractor and 5 on the truck. The offset is the same for single pulley compressors. ------------- 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 |
Posted By: shameless (ne)
Date Posted: 26 Feb 2017 at 10:47am
| mine is off my old Caddy and works just fine |
Posted By: LB0442
Date Posted: 26 Feb 2017 at 10:06pm
Most any A-6 compressor will work. The best thing to do if you get one in the junkyard is to make sure it turns freely by hand. Make sure the clutch looks good and the pulley bearing sounds good. I always drain the old oil out (they have a drain plug on the bottom) and make sure it doesn't have metal in it. Then I put in the newer double lip teflon front seal. It is for an HR-6 compressor, same dimensions. NOTE you must use the seal installer for this seal so the teflon lip doesn't get scratched. Here is the seal and the installer.
 I don't even put in the felt wick because you won't have any oil seepage like the oil ceramic seals had. I've probably done 10 or 12 of them and have a couple of them here that I did 15 years ago and still no leaks. The only thing I use out of the seal kit is the oring and seal.
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