8070 Tach Problems
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=56780
Printed Date: 06 Sep 2025 at 5:41am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: 8070 Tach Problems
Posted By: ScottinSWIL
Subject: 8070 Tach Problems
Date Posted: 13 Sep 2012 at 1:16am
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The tach on my 8070 has been a little suspect the last year or two now as far as working sometimes and at other times it will just quit. When the tach is showing rpm's the hr meter will always work also. There will always be a noticable wiggle of the needle when you turn on the key, but then more times then not now it will not work. I am ready to install a new tach this winter. but was just going to check here first if the symptoms I describe could be possibly something else. Thanks
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Replies:
Posted By: MI8050
Date Posted: 13 Sep 2012 at 4:45am
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This is common, seem to recall guys saying it is the sender, not the tach. Mine acted up for quite awhile just like that, it has been good all this year though, go figure.
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Posted By: Henry se/k!
Date Posted: 13 Sep 2012 at 7:00am
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If you need a new tac, jerry at 785 448 3968 has a nos that he would sell at a discount. I found this out after I got one fron the holdup artist agco!
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Posted By: Dave in il
Date Posted: 13 Sep 2012 at 7:18am
There was a post last year about an aftermarket sending unit but I can't find it. If someone could repost that I'd appreciate it as my tach is doing the same thing.
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AGCO My Allis Gleaner Company
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Posted By: Brad in WA
Date Posted: 13 Sep 2012 at 3:46pm
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The aftermarket sender is an Isspro R8932. It's available from Instrument Sales and Service for $50.89. 800-333-7976
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Posted By: DougG
Date Posted: 13 Sep 2012 at 5:50pm
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Is there a way to test if its the tach or sender ??
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