(800) 853-2651
SHOP NOW

PTO Line/Valve Access MF 85

7

71IH

Member
Dealing with a non functional pto on a MF85. PTO spins in ground drive, but nothing in engine drive. Doesn't matter tractor rpm of idle, or full throttle. Engine pto worked well before the machine was parked a few years ago.

Filters and fluid( was bad shape) have been cleaned/replaced, as well as PS filter and screen. Power steering works "good."

When I move PTO lever from neutral to engine, or ground over to engine I feel no real resistance or click. I suspect that is normal given the hydraulic nature of it.

I realize my next course of action is to probably split the tractor. But is there any possible thing to look into before then. Possibly a cover,or plate I can remove to potentially get into the pto/relief valve and associated lines to clean/inspect before I have to split it? If so, where?

I wouldn't think that the PTO clutch is fried, but I am curious as to if the PTO brake could be stuck on if hydraulic pressure can't get back there to release it?

Thanks
Thanks
 
First install a 300 PSI gauge in the return oil line where the switch is for the red dash light, if I recall pressure should be 175-225. If the clutch pedal dump valve is working pressure will drop to zero with pedal clear down, and pressure rise again with pedal about two inches above the lower stop. NO pressure could be the small line is popped out of the transmission front cover, OR the pressure regulating valve that's located in the cover is stuck open. The 85D I sold my brother has a week PTO now too, it will spin but won't pull a load. Have not had a chance to look at it yet..
 
You must log in or register to reply here.

Similar threads

S
Massey-Harris 35 pull type combine, or Massey 300?
Replies
7
Views
596
Leroy
L
M
John deere 2750 PTO
Replies
9
Views
430
ADB-Ia
ADB-Ia
C
Mf135 clutch and pto problems
Replies
6
Views
528
Ctractor
C
G
John deere 4020 LP Synchro trans PTO handle not functioning
Replies
6
Views
294
Fixingfarmer
Fixingfarmer
R
Ford 7600 PTO and 3 point hitch not working
Replies
6
Views
465
RodinNS
R
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