(800) 853-2651
SHOP NOW

IH 784 hydraulics question

S

scott2013

Member
I got my 784 ready today and took it for a work out. It runs and pulls great but the hydraulics have an issue. Once it got hot the lift seemed to vibrate when I picked up the harrow. The entire tractor vibrated. The vibration lessened the longer I ran it but it didn't go away. I changed the filter last week and I could've done something wrong there but it appeared fairly simple. I'm going to run it another hour or so to see if it clears. Any suggestions on what might cause this?

Thanks,

Scott
33756.jpg
33757.jpg
 
Was it lifting it up properly, not lagging
or anything as it was being raised. Not sure
but it sounds like it didnt have enough
pressure built up
 
(quoted from post at 05:41:01 03/10/16) Was it lifting it up properly, not lagging
or anything as it was being raised. Not sure
but it sounds like it didnt have enough
pressure built up
Click to expand...
Chattering check valve? It lifts quick and holds.

Scott
 
Hi Scott, is it sucking air from around the filter? Is there plenty of HyTran in the transmission. Check HyTran level with
transmission warm and tractor at fast idle at about 1500 RPM. Level should be above hash marks on transmission dipstick.
Overfilling by 5 gal is always recommended.
JimB
 
I. Just changed the filter and fluid. I put in about 10 gallons and I have another 2.5 gallon jug that I'll put tomorrow. I will report back the results.

Thanks,

Scott
 
5 gallons extra appears to have done the trick. I had read about this but thought its for hydro only.
Thanks,
Scott
 
Scott, the trans/diff has multiple chambers and there is a small transfer pump that is supposed to keep the hydraulic oil level in
all chambers so the main hydraulic pump doesn't suck air. So over filling fixes that problem.
BTW nice looking 784.

JimB
 
You must log in or register to reply here.

Similar threads

T
641 Workmaster hydro rebuild question
Replies
3
Views
153
twayne88
T
U
IH 454 Hydraulic Issues
Replies
9
Views
718
UpNorthInTheWoods
U
1
JD B Shakes At Mid to High Throttle
Replies
12
Views
963
wore out
wore out
L
1966 John Deere 2510 jittery Hydraulics
Replies
15
Views
794
Harry in Ky
H
B
Help me understand power beyond/auxiliary hydraulics
Replies
9
Views
481
BigJeeps
B
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