Farm Equipment - Tach drive location on XT III

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Tach drive location on XT III

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=43501
Printed Date: 05 Sep 2025 at 2:57pm
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Topic: Tach drive location on XT III

Posted By: Leon B MO
Subject: Tach drive location on XT III
Date Posted: 09 Jan 2012 at 7:06pm

The tach drive on our 72 Series 3 xt is on the back of alt., I was suprised to find the tach cable going straight into the block on the 69. It seems like the small gears on the back of the alt are always stripping out, neither 200's or the 72 xt tach work. When did they go from driving the tach from the block to the back of the alt.

Leon B MO

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Uncle always said "Fill the back of the shovel and the front will take care of itself".

Replies:

Posted By: stray
Date Posted: 09 Jan 2012 at 7:49pm

Leon, My 69 190XT is ran off of the alternator SN 24328. So if yours is also a 69 then it had to be in 1969

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1969 190XT series 3

Posted By: nevans
Date Posted: 09 Jan 2012 at 7:51pm

Leon I think it changed in 1970with the black face tac Niel

Posted By: Leon B MO
Date Posted: 09 Jan 2012 at 8:18pm

My serial # is 24749, and yes it has the older style tach.

Thanks

Leon B MO

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Uncle always said "Fill the back of the shovel and the front will take care of itself".

Posted By: MACK
Date Posted: 09 Jan 2012 at 10:03pm

Alot of balancers on 7010 and 7020 moved back wearing a hole in front cover. MACK