(800) 853-2651
SHOP NOW

IH766 hydraulics

Z

za766

Member
I started my 766 diesel Saturday morning while it was still very cool out and did not have any steering and when put into gear it just sat there. I then shutoff and checked the hydraulic fluid level and it registered at the full line. Having heard before to overfill the hydraulics I added a couple of gallons of hytran and started the tractor and let fast idle for a few minutes and regained both the steering and the gears engaged. Am I on the verge of needing a major hydraulic pump job or is this something I can attempt to work on myself. Is it ok and how much can you overfill the hydraulics to compensate for a problem. I am of average mechanical ability but have never attempted to tackle anything hydraulic before. Please let me know what you think is my next steps. Thanks very much for any help.
 
My first thing i would do is change the filter . IF the oil looks milky then i would drain the system and install new Hy Tran . When ya get the filter out tear it apart and take a real close look at it . As far as the over fill it will not hurt a thing . As to the hyd pumps in your tractor i don't have a clue as to them being good bad or ugly . And with out having someone that has a FLOW RATER do the whole test of the main hitch pump and the MCV pump we are all guessing . So i am not going to tell you to run out and buy both pumps . As to why it did this well mybe it was the fliter being plugged a bit maybe the o/ring between the range transmission and the speed transmission is hard and not sealing well maybe the mcv pump is just getting weak . As for changing out the pumps yourself ya it is not hard but there are somethings that you would need to know BEFORE ya start and not till after you are done. So here is where having atleast and I T Manual comes into play.
 
Before you go crazy I'd check the seal on the Hyd filter. If any air is getting in the system won't work. New Hyd filter next and change the big O-Ring with a new one and make sure your don't pinch it when you install it.

Beyone this you'll need a manual on how to test the system.
 
You must log in or register to reply here.

Similar threads

J
Bleeding Hydraulics on a John Deere 2640
2
Replies
21
Views
955
JohnGough
J
D
Farmall 666 Hydraulic Pump
Replies
14
Views
624
dm2237
D
R
1970 ford 8000 fluids
Replies
2
Views
395
showcrop
showcrop
T
1962 Fordson/Ford 2000 super dexta hydraulics question.
Replies
3
Views
281
Majorman
Majorman
B
John Deere 2640 Steering/Hydraulics
Replies
5
Views
374
Tx Jim
Tx Jim
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