(800) 853-2651
SHOP NOW

John Deere 8630 problem

B

BMAN

Member
I'm having low clutch lube pressure in my 8630. Mechanic isn't finding anything yet. What should we be looking for as a cause?
 
Does it show low in both Hi and Low position??, I'm sure you changed the clutch filter the one in the hinge, the sump screen in the bottom could be plugged, the clutch oil pump could be failing, and of course the HI/low could be failing ,,these are primary reasons...
 
The hi/low was replaced last fall. Did everything on your list except the clutch oil pump. Is that the pump in the transmission also called the secondary pump?
 
That pump is in the hinge area hiding in front of the filter "head".

The one in the back is simply for tranny lube.
 
The clutch oil pump is behind the hinge oil filter, it's a tandem pump, one part sucks oil out of the clutch housing the other develops the clutch operating pressure, they are gear pumps..
a187959.jpg

a187961.jpg
 
Tim, how much oil comes spilling out when you remove the screen plug? Somebody else wound up doing it the last time it was needed but it should be checked again after changing the hydraulic pump last year.
 
If all is going right there should be only a couple quarts in the clutch housing screen, the one up under the front,, the nasty one... the 2 rear screens will drain the transmission...
 
(quoted from post at 08:18:23 05/09/18)
(quoted from post at 06:12:51 05/09/1

on a John Deere 8430
Click to expand...

Under the cab, below the clutch pedal, is the "clutch regulating valve".

There's three ports with hex plugs in them, main clutch pressure is checked at the port labeled "CLUTCH".

You can see the port at the lower right in the first photo.

You need a O-ring type hydraulic fitting that matches the port to connect a gauge. (I can't remember the size, offhand.)







vxzu3p.jpg


1yn6h1.jpg
Click to expand...
 
You must log in or register to reply here.

Similar threads

H
2555 brakes
Replies
13
Views
634
WTW
W
T
John deere sickle mower
Replies
4
Views
577
ajhbike
A
paulsamwel
4230 running/testing with cab removed
Replies
4
Views
358
paulsamwel
paulsamwel
D
Looking for Flywheel - 1943 John Deere H, Hand Start
Replies
9
Views
575
dan_41jdh
D
D
2010 Power steering
Replies
17
Views
487
Daniel in PA
D
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