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Detent Spring upgrade for 5015 gearshift

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Garden Tractors
Forum Description: A great place to discuss the Simplicity and Allis Chalmers Garden Models
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=139175
Printed Date: 23 Feb 2025 at 7:53pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com


Topic: Detent Spring upgrade for 5015 gearshift
Posted By: Reindeer
Subject: Detent Spring upgrade for 5015 gearshift
Date Posted: 07 Jun 2017 at 3:41pm
My 5015 has had a difficult life prior to my picking it up.  So far  rebuilt the starter, replaced the alternator, reconnected a lot of wiring, etc.   
But it runs and mows over ground that the newer machines would blush at.

The one thing that was giving me fits was that it would occasionally jump out of gear usually headed downhill into the pond!

Somewhere on the forum I found mention of increasing the detent spring pressure with stronger springs.  Sounds too easy, was my first thought, but I got out my caliper, and measured the springs that were under the two capscrews  right behind the gearshift.

The closest I could find for size and greater strength were these from Mcmaster Carr.  Today I put in the new ones and there is no more loose feeling in the gear shift!   The shifter moves fine, but when engaged it takes a good tug to get it out, and the first trials have been successful.  

The Mcmaster Carr number is 9595K35 which is a .375" by 1" die spring.  They are hard to compress when installing.  I had to grind off about a millimeter on one of them to get the compression capscrew started, but seem to work well.



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Replies:
Posted By: Reindeer
Date Posted: 01 Jul 2017 at 8:02pm
Have used the tractor several times in different situations and no further issue with gear jumping.  Beer
 


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