(800) 853-2651
SHOP NOW

620 hydraulic pump and governor

A

alfrehner

Member
I just brought home a 620 that has a little issue with the idle shaft between the governor and the hydraulic pump. I have not been able to get the oil lines out of the
hydraulic pump. Actually I got the smaller one out with pb blaster, but have not been able to get the other out. I am afraid of damaging the line, and was hoping if
someone out there has a suggestion on getting the oil line out. I tried a little heat, but I was afraid of damaging something else so I quit.
The idle shaft is held in place with a pin that has apparently broken and allowed the shaft to spin and wallow the hole out on the governor housing. Anybody know where a
I might be able to find a new governor housing, or a whole governor unit.I live in Utah and have checked some salvage yards but no luck yet out here in the west. Thanks
for your help.
 
You'll probably find that the idler gear is seized to the idler shaft. The idler shaft is drilled for lubrication, but Deere made no oil passage to it. You can easily add an external oil line while you have it apart.
a174592.jpg

a174593.jpg
 
If you can't find a housing then I'd find a friend with a milling machine. Likely that housing can be reclaimed and a bushing made to fit in it.
Keep soaking the line with PB blaster and take a hammer and punch and try and tap only on the heavy metal part of the line in hopes of shocking it loose. Some times a dead blow hammer and or a block of wood and try tapping in a direction to remove the line being as careful as you can not to dent the line..
 
I had the governor case off anyhow, so I blocked it up on the drill press and drilled it from the left side. There's a convenient dimple in the bottom of the blind hole to center your bit.

On getting the hydraulic line loose - would it help to loosen the other end of the line where it attaches at the back of the tractor? It might give you a little more wiggle.

On my 630, the idler gear seized to the shaft and sheared the keeper pin. I noticed it pretty quick and it didn't ruin the governor case, but I had to remove the governor and torch the gear to get it out. Hopefully you'll find that your governor case is not ruined.

The pictures are of a JD 50.
 
You must log in or register to reply here.

Similar threads

4
J D 420 C engine questions (governor)
Replies
5
Views
324
M-MAN
M-MAN
8
John Deere AR Governor Drive Problem
Replies
3
Views
286
8e3k0
8
O
JD 620 Steering catch issue
2
Replies
38
Views
1K
offroad23
O
M
Oil leak at air pump
Replies
2
Views
224
Mike(NEOhio)
M
G
cat 3116 engine mui governor
Replies
10
Views
691
mkuhns
M
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