(800) 853-2651
SHOP NOW

JD 420W Transmission

M

mwilke

Member
I recently purchased a 420. I started it and had the transmission in neutral and engaged the clutch. After a few seconds I noticed the tractor wanting to jerk forward as if to try to put itself in gear. There is some "noise" in transmission area. Could I have bearing issues and if so, can the transmission be overhauled without slitting the tractor? I also noticed that the gears to the rear of the shift pattern seem to engage when barely slipped into position.
Thanks in advance.

Mike
 
If you have no prior experience with a Dubuque tractor, I suggest you find one and go through the gear shift options to feel what an OK tranny feels like. Wear on the shifter knobs (at the bottom) is common, and changes how they shift,

Pull the tranny cover and look - worn gears, broken teeth, worn shifters, bent forks, etc. Put a magnet into the bottom of the case and see if you pull up anything.

I'm guessing you also have clutch repair in your future.

For sure, splitting will be necessary - probably at BOTH the clutch and tranny.

You need to search this forum - lots of pics and discussion.
 
To fix the transmisson bearings or any gears you have to completely disassemble the rear of the tractor after you split it. Alot more to fixing it than an model"A" or "B" Good Luck
 

Which 420 and which of various different transmissions?
The parts book is online at the JD web site.
Odds are splitting stands, feeler gauges, a parts washer, micrometer, calipers and a torque wrench are in your tractor's future. Each and Every little bitty drive train part has to be split and disassembled.
 
You must log in or register to reply here.

Similar threads

B
4240 powershift up date.
Replies
0
Views
126
Brokentractor71
B
W
International 2400B industrial tractor
Replies
3
Views
146
RedMVa
R
B
4240 powershift up date.
Replies
6
Views
458
used red MN
U
B
1939 John Deere L transmission bearing
Replies
4
Views
172
BrianMiller
B
C
720 gas transmission
Replies
2
Views
329
rmcky
R
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.

Copyright © 1997-2024 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

Back
Top