Welcome! Please use the navigational links to explore our website.
PartsASAP LogoCompany Logo Auction Link (800) 853-2651

Shop Now

   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver

Crawlers, Dozers, Loaders & Backhoes Discussion Forum

JD 350b

Welcome Guest, Log in or Register
Author 
sht725

06-04-2006 07:02:24




Report to Moderator

Looking for a forward clutch spider for the reverser on my 350B. Parts book says about all 350 series will work. Mine is missing a few teeth. Teeth are broken off and I do not have clue what caused it . Bearings all appear to be good. None of the other gears show any damage. Thanks




[Log in to Reply]   [No Email]
Alaska Jim

06-05-2006 03:04:41




Report to Moderator
 Re: JD 350b in reply to sht725, 06-04-2006 07:02:24  
I had a leak a few years ago from the hole in the bottom of the reverser housing between the reverser and the engine on my 1984 JD350C dozer. After reading information from this forum, my plan of attack started with pulling the engine. What I found was the hydraulic reverser pump seal AT29365 had failed due to a failed engine pilot bearing JD9449. Other damage included a worn shaft end on the reverser spider T37439. Besides the obvious repairs of the seal, pilot bearing, and spider, information from this forum helped me to decide to upgrade from the problem torsional isolator w/ springs AT29086 to the much improved rubber torsional isolator AT77319. This upgrade also required changing the flywheel from AT27834 to RE15923. I was able to change the reverser spider by removing the reverser front cover and leaving the reverser installed in the machine. The cost of parts from John Deere for this job was somewhere around $3000. Even though this is alot of money, I'm glad my dozer now has this upgrade. I'll be even more glad the next time I head into the backcountry. I'd like to thank everyone on this forum for the expert advice that I got dealing with an obviously poorly designed JD350 torsional isolator. Without this advice, I would have spent hard earned money merely replacing a poorly designed torsional isolator instead of upgrading to the stronger rubber design.

[Log in to Reply]  [No Email]
jdemaris

06-04-2006 07:58:00




Report to Moderator
 Re: JD 350b in reply to sht725, 06-04-2006 07:02:24  
The gear teeth are for reverse - so if they are damaged it's likely there are problems with the reverse countershaft gears and perhaps their bearings.
In regard to the front spider and interchanging - look closely - you cannot just rely on the machine it comes from - or is going into. Deere updated it several times - including for repair parts. In 1010s and early 350s - there is no pilot bearing in the flywheel - a brass bushing is used instead. So . . . the stub on the end of the spider is different. Also, the bearing sizes were changed on both sides of the front spider. With the inside bearing that mates with the output shaft - as I recall - it was upgraded with a larger diameter bearing - but the output shaft remained the same - it gets a larger bearing cone installed onto it but the mounting diameter stays the ID. Also, 1010s and early 350s used a spring-dampened clutch disk whereas later 350s used a special isolater assembly - so the splines differ (I think). I don't do this stuff everyday anymore - so sometimes forget a few details. We had to repair many older 350s with trashed front spiders and they got upgraded.

[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:


TRACTOR PARTS TRACTOR MANUALS
We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home  |  Forums


Copyright © 1997-2023 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy