Farm Equipment - d 15 gear jumper

Print Page | Close Window

d 15 gear jumper

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=42397
Printed Date: 30 Aug 2025 at 9:07am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: d 15 gear jumper

Posted By: cobra
Subject: d 15 gear jumper
Date Posted: 20 Dec 2011 at 5:49am

every now and then my d15 series II gas engine will pop out of a forward gear.I think it is mostly second gear but am not sure as i have not used it a great deal. thankfully no snow yet but it will come. thanks

Replies:

Posted By: B26240
Date Posted: 20 Dec 2011 at 7:19am

Thats a common issue for these collar shift trans. There are some"fixes" you can try like making sure fork isn't bent or maybe moving detent grove on shift rail . Likely a real fix will involve replacement of worn parts (complete disassembly) and a thick checkbook !!

Posted By: cobra
Date Posted: 21 Dec 2011 at 8:05am

ive seen a guy use a bungie cord to hold his tractor in gear.is this acceptable and when u say expensive to fix is it mostly parts or time or both as well as difficult. thanks

Posted By: DonDittmar
Date Posted: 21 Dec 2011 at 8:20am

cobra wrote:

ive seen a guy use a bungie cord to hold his tractor in gear.is this acceptable and when u say expensive to fix is it mostly parts or time or both as well as difficult. thanks

This only works for a short time. Uncle did this on his series I D15 and it worked for a year.....Now 2 guys can stand on the gear shift and the minute you let the foot clutch out it pops out of 3rd.

We can blow smoke up each others skirt all day about shift forks and detents and shaft end play and all the other fixes. Only way to fix a D series jumping out of gear is to rip the trans apart and replace worn out expensive parts. Not hard to do, just time consuming and pricey

-------------
Experience is a fancy name for past mistakes. "Great moments are born from great opportunity"

1968 D15D,1962 D19D
Also 1965 Cub Loboy and 1958 JD 720 Diesel Pony Start

Posted By: cobra
Date Posted: 28 Dec 2011 at 5:54am

thanks herb. ill try this happy new year

Posted By: CTuckerNWIL
Date Posted: 28 Dec 2011 at 6:31am

Every time that pops out of gear, it does more damage to the splines. It is possible the gear splines are OK if the collar was replaced now. Proper engagement is also helpful in saving the splines.

-------------
http://www.ae-ta.com" rel="nofollow - http://www.ae-ta.com
Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF