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acp 50 finding TDC

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Construction and other equipment
Forum Description: everything else with orange (or yellow) paint
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=7615
Printed Date: 28 Jul 2025 at 2:13pm
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Topic: acp 50 finding TDC

Posted By: walshmetal
Subject: acp 50 finding TDC
Date Posted: 04 Feb 2010 at 6:46am

I have a A C ACP 50 diesel forklift. I am replacing the injection pump and injectors but need to know how to find TDC. Any help would be appreciated.

Replies:

Posted By: dadsdozerhd5b
Date Posted: 04 Feb 2010 at 6:39pm

there is timing marks somewhere either on the harmonic balancer or the flywheel. find them and mark 0 with a bright marker/soapstone. the timing marks will line up with a pointer or v in the housing next to it and have degree marks along with it so you can set the timing correctly. remove the valve cover, turn engine over and watch the rockers. after exhaust and intake valves both move, rotate crank to 0 timing mark. that is tdc compression stroke. be sure to rotate it in the direction that the engine turns. there may be a better trick but that is sure fire. hope this helps.

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HD5B, HD5G, (2) FARMALL A's, CUB. DO IT RIGHT THE FIRST TIME, IGNORE THE LAUGHTER. FLANNEL IS ALWAYS IN STYLE.