(800) 853-2651
SHOP NOW

1086 TA / Clutch

B

Bemhoff

Member
79 1086 new clutch/recent TA. Clutch has 100 hrs on it, TA maybe 250 hrs. Here is my issue, disking the other day I got out of the tractor noticed a different sound than normal that sounded like it was comming from the area just infront of the auxillary fuel tank. The noise was not loud at all, just sounded maybe a little different like gears turning . When I got back in the tractor and went to put it in gear I noticed the clutch pedal seemed a little harder to push in and seemed like it was pulsing aginst my foot. If finished disking the field and drove about 300 yards in 2nd gear high range TA ahead. I pulled out on to the road, dropped the idle down to about 800 RPM to shift in to 3rd gear. I left out the clutch and started increasing the throttle. After about 25 feet of travel the tractor jumped like I shifted the the TA from low to high. Can anyone tell me what this might be leading to.
 
Sounds like low hydraulic pressure. Is your TA dump valve light burnt out? It should be coming on when you depress the clutch or the hydraulic pressure drops.
Chuck
 
Yep it comes on. I was thinking the same on the pressure. I will admit that I don't know a lot about the tractor ie. what the MCV pump supplies and stuff like that. This is the first time any of this happened and I am the kind of person that likes to fix little issues before they become big ones. This all happened around idle to 900 rpm so I would assume if the pump was getting weak it would not be building the correct pressure. I would assume that there is a pressure regulating valve in the system and it could be sticking. None of that would explain the the slight gear running noise that I was hearing. Thanks for your response.
 
The gear noise you may be hearing could be coming from your hydraullic pump. It could have possibly sheared off the key that holds the gear on and it's just spinning under the locking nut.
 
Kevin, thanks for your reply. What all does the pump supply fluid to? I had shifted the TA a few times after I first heard the noise and had no issues and also depressed the clutch several times and it seemed fine. All of this was at higher 1800 RPM. Does the MCV pump supply fluid to the TA and also have something to do with the clutch? Don't know a lot about these bigger tractors. Have a 766 and this 1086, both bought in the last 4 years. We just do small time hobby farming, maybe put 100 hrs on each machine a year so I have little trouble shooting experience on them. Again, Thanks
 
It supplies the ta the brakes and power steering. It shouldn't have anything to do with the clutch. Your best bet would be to make sure all of your settings for the clutch and ta are set properly and next put a set of pressure gauges on the mcv to see what's going on.
 
Do the 86 series have a hydraulic assist clutch? If he has pump pressure issues that could make the clutch pedal jumpy with the low pressure.
 
Allen, thanks for pointing that out. I never thought about that but it is a possibility because when I pulled out of the field the tractor would have been in a twist for a bit. That really wouldn't have anything to do with the slight noise I was hearing from the tractor earlier. I will keep the cables and cab mounts in mind. Thanks again.
 
Thanks Kevin. That is the first place I am going to start, I need to make sure that everything is set properly and missadjustment is not creating the symptom. I have read a bunch of other threads and there seems to be a whole bunch of things that can go wrong in the MCV circuits.
 
That "double clutch feel" almost always is an adjustment issue. Especially so, since you've just replaced the clutch and T/A.

Trouble is, those darned 86s use cables to reach the machinery from inside the cab. :>)

Allan
 
You must log in or register to reply here.

Similar threads

G
656 clutch TA
Replies
7
Views
381
gaughan30
G
B
Explain the TA on a Farmall to me
Replies
11
Views
942
Mike(NEOhio)
M
J
806 mcv /steering/ta clutch not right
Replies
7
Views
449
the tractor vet
T
D
Farmall 400TA issue
Replies
17
Views
1K
the tractor vet
T
J
4630 hydraulic/ transmission issues
2 3
Replies
47
Views
2K
tim s
T
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