Pressure Testing Old Tractor Cooling Systems
Printed From: Unofficial Allis
Category: Other Topics
Forum Name: Shops, Barns, Varmints, and Trucks
Forum Description: anything you want to talk about except politics
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=212282
Printed Date: 19 Sep 2026 at 12:38pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Pressure Testing Old Tractor Cooling Systems
Posted By: wjohn
Subject: Pressure Testing Old Tractor Cooling Systems
Date Posted: 19 Sep 2026 at 9:30am
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What's everyone's favorite way/tool to pressure test radiators and such on our old AC tractors? I almost picked up a radiator pressure testing kit from Harbor Freight the other day but it didn't look like any of the cap adaptors would work. ------------- 1939 B, 1940 B, 1941 WC, 1951 WD, 1952 CA, 1956 WD-45 |
Replies:
Posted By: ACinSC
Date Posted: 19 Sep 2026 at 9:34am
| I used one from AutoZone on my D 15. Had to put up a deposit but got it back when I returned the tester. Good luck |
Posted By: 55allis
Date Posted: 19 Sep 2026 at 9:35am
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An air compressor and a leather or rubber glove. Just be careful not to over pressure it. ------------- 1955 AC WD45 diesel with D262 repower, 1949 AC WD, 1963 A-C D17 series 3, several Allis garden tractors 
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Posted By: plummerscarin
Date Posted: 19 Sep 2026 at 10:33am
| I "borrowed" a test kit from O'Reilly. Paid the deposit, (full retail price) and never returned it. Of all the test caps in the kit, the only one I've been able to use is the rubber expansion cap. I've used it so many times over the years I don't miss the "deposit". |