Garden Tractors - AC 720 TLB. Anything to watch for

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AC 720 TLB. Anything to watch for

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Garden Tractors
Forum Description: A great place to discuss the Simplicity and Allis Chalmers Garden Models
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=206530
Printed Date: 18 Jul 2025 at 4:10am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: AC 720 TLB. Anything to watch for

Posted By: Heliarc
Subject: AC 720 TLB. Anything to watch for
Date Posted: 01 May 2025 at 2:22pm

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Bringing home an Allis 720 with loader and backhoe. It hasn't run in over a decade. I know there will be plenty to do, hoses, probably repacking cylinders, rebuilding valves and who knows what else. I'm going to pull the plugs, oil the cylinders and turn the engine by hand a few times before I even try for the starter. Remove cooling shrouds and clean all the junk out. Generally take it real easy on everything as I'm bringing it around. I figured maybe engage the PTO clutches and rotate the engine by hand and see how that feels. Hydrostatic transmission and I'm not familiar with them really. I'm going to get all the manuals I can but if there's something I should be wary of as I go I'd sure like to know. I don't want to mess up.

Replies:

Posted By: Gary
Date Posted: 01 May 2025 at 4:11pm

Hopefully they drained the gas tank and carb.

A Gas/Ethanol mix will create a massive amount of rust.

I leaned that the hard way on a brand new 11 HP Engine.

G

Posted By: Heliarc
Date Posted: 02 May 2025 at 6:30am

If that's the worst of it I'll be lucky. I know there's one burst hydraulic hose and the rest are probably ready to go.

Posted By: orangeman
Date Posted: 02 May 2025 at 8:37am

Broken Rear Axles and Bent Cylinder Rods, say nothing about rotted hydraulic hoses on a fifty year old machine. These are a sub frame add on backhoe -loader component machine and not designed from the ground up to be a loader backhoe. Wish you luck on this one.

There's a reason it hasn't run in 10 years, look carefully!

Posted By: Heliarc
Date Posted: 08 May 2025 at 3:25pm

Hoses for sure. They're all kinds of mummified. There might be one or two I can keep as spares but I'm going to do all of them.

The story I got is a guy bought it new and ran it a long time then he died. A grandchild ran it a little while, blew a hose and then it sat for 12 years until it ended up with the PO and then a few months later I bought it.

I'm sure there's plenty more hiding and I'll find it as I bring it around but it doesn't look like it got thrashed on too badly, just neglected.