Farm Equipment - Electric Tach problems

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Electric Tach problems - 7045

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=10591
Printed Date: 22 Jan 2025 at 9:55pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Electric Tach problems - 7045

Posted By: Adam Stratton
Subject: Electric Tach problems - 7045
Date Posted: 04 Apr 2010 at 8:15pm

The tach had been working just fine on my 7045, but we split the tractor to overhaul the engine and put new plates in the PowerDirector. Now, that everything is back together, the tach doesnt work. I was checking connections in the wiring with my dad in the cab watching the needle. I accidentally shorted a wire to the ground, and the tach worked, but only when the wire was shorted. I know I dont want to run it like that, so what does that tell me I need to do to fix it? Thanks in advance.

Replies:

Posted By: monitordoc
Date Posted: 04 Apr 2010 at 9:30pm

ONE OF THE TREE WIRES ON THE TACH IS GROUND. TERMINALS ARE MARKED .

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WD,D17-S4,180,D21