Farm Equipment - 3500 series engine

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3500 series engine

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=143596
Printed Date: 05 Apr 2026 at 12:43am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: 3500 series engine

Posted By: FrankB
Subject: 3500 series engine
Date Posted: 18 Oct 2017 at 6:47pm

Hi folks ,been awhile since my last post.I did get my 7060 power director fixed.The clutch plates were warped like frisbees,I also had .250 machined off of the low range piston & put another friction & spacer in , the tractor has performed flawless all summer thanks to all who gave advice.I now have another question for you folks,my boss has bought another Allis 7060 with a 3500 series engine in it , it's a power shift . It has some issues , I was wondering if anyone knows what the compression psi should be on this engine as I will

run a compression test on it tomorrow.Thanks …Frank

Replies:

Posted By: MACK
Date Posted: 18 Oct 2017 at 9:11pm

Depends on how you check it, running or spinning it with starter. I have never been big on compression testing. Too many things effect compression checks. MACK

Posted By: injpumpEd
Date Posted: 19 Oct 2017 at 6:30am

cranking it with the starter, I'd want to see 300 at least, 350 even better. Running on 5 cylinders it's supposed to be 450 if memory serves me correctly.

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210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!

Posted By: DrAllis
Date Posted: 19 Oct 2017 at 7:07am

All injectors removed and a battery charger connected, you should see 350 psi or a little more on a healthy engine.