TRACTOR PARTS Allis Chalmers Case & David Brown Farmall & International Ferguson Ford & New Holland John Deere Massey Ferguson Massey Harris Minneapolis Moline Oliver & Cockshutt Kubota / Yanmar

TRACTOR MANUALS

Allis Chalmers	Case	Farmall IH	Ford 8N,9N,2N	Ford
Ferguson	John Deere	Massey Ferguson	Minn. Moline	Oliver

Massey Harris & Massey Ferguson Tractors Discussion Forum

Proper way to disengage spinning PTO. on 135

Welcome Guest, Log in or Register

Author

06-22-2006 19:23:23

Report to Moderator

I use my brush cutter quite a bit with my Massey 135 and was told to wait until the cutter stops spinning before disengaging the PTO lever. Apparently taking the PTO out of gear while it is still spinning at or near 540 speed is very hard on the PTO clutch.Is there any truth to this?

[Log in to Reply] [No Email]

Big Dean

06-23-2006 09:25:06

Report to Moderator

Re: Proper way to disengage spinning PTO. on 135 in reply to 02, 06-22-2006 19:23:23

At the Massey Ferguson service training class we were told to idle the engine down to low idle speed with manual pto push the clutch pedal completely down to release the pto clutch and shift it in to neutral. With the Independent pto when the engine is at low idle disengage it. To engage it the engine should be at or close to low idle speed . Then after it is engaged raise the RPMs to pto speed.

[Log in to Reply] [No Email]

DavidP, South Wales

06-23-2006 05:26:52

Report to Moderator

Re: Proper way to disengage spinning PTO. on 135 in reply to 02, 06-22-2006 19:23:23

Hello,
Disengaging the PTO can be difficult with a non-independant system. You will find it easier if you open the throttle slightly and then dhut down. In that few seconds or so the implement will be 'driving' the tractor and you will be able to disengage easily. It might take a bit of practice.

[Log in to Reply] [No Email]

Don-Wi

06-22-2006 23:09:51

Report to Moderator

Re: Proper way to disengage spinning PTO. on 135 in reply to 02, 06-22-2006 19:23:23

By your description it's gotta be a 2 stage clutch, which all that I know of are just that. I see no problem disengaging a 2 stage pto while holding in the clutch. Were it our 285 that is hyraulic, yeah you gotta idle it down before you disengage it, atleat if it's a brush hog or a forage blower without a ORC in the drive line.

We've had the PTO clutch replaced twice in it. Once was after having to run the blower for a few years, it just took it out having to stop that inertia, even from an idle. Now the 1600 Oliver is back in it's place on the blower, no prblems with that one.

Donovan from Wisconsin

[Log in to Reply] [No Email]

Yep

06-22-2006 20:06:59

Report to Moderator

Re: Proper way to disengage spinning PTO. on 135 in reply to 02, 06-22-2006 19:23:23

Hi 2

If your tractor is equipped with independent PTO
(hydraulic clutch driven) it is preferable to slow down the engine at idle before disengageing the PTO lever to avoid premature wear on the PTO brake..since the brake is not intended to stop machine inertia. PTO brake is there to keep the
PTO shaft from turning when wou hook/unhook pto driven implements.

My 2�

Yep

If equipped with dual clutch (standard gear driven) PTO I do'nt see any problem disengageing the PTO lever while mower is still spinning

[Log in to Reply] [No Email]

Gerald J.

06-23-2006 08:20:03

Report to Moderator

Re: Proper way to disengage spinning PTO. on 135 in reply to Yep, 06-22-2006 20:06:59

I see major problems disengaging the dual clutch PTO while spinning. The shifter simply slides a gear along a splined shaft. There is no synchronizer, no overload clutch. It has THREE positions, engine drive, neutral, and ground drive. Sliding it too far engages ground drive with NO clutch, life of the gear teeth is sure to be compromised by shifting when the PTO is spinning.

The safe way is to stop the tractor and the PTO by pushing the clutch pedal all the way, wait for all to stop, then shift the PTO out of gear making sure its not in the other gear.

Gerald J.

[Log in to Reply] [No Email]

Old Rake

06-23-2006 17:51:07

Report to Moderator

Re: Proper way to disengage spinning PTO. on 135 in reply to Gerald J., 06-23-2006 08:20:03

Gerald

I suggest you check your tractor operator's manual
PTO ground drive has nothing to do with the clutch
in the situations stated the tractor is not moving
the ground drive is directly driven by the tractor
power train if tractor is stopped ground drive may
be engaged any time.

About your statement on synchronizer nothing to do either... on my heavy trucks which transmissions are not synchronized should I avoid to shift main transmission in 5th because the reverse gear is the nearest position on the shifter.

Old Rake

[Log in to Reply] [No Email]

John (UK)

06-24-2006 12:46:28

Report to Moderator

Re: Proper way to disengage spinning PTO. on 135 in reply to Old Rake, 06-23-2006 17:51:07

if the tractor is stopped but the PTO is spinning you can"t engage ground drive it will grind because the PTO shaft is turning but the drive pinion into the axle isn"t. But how many use ground drive anyway, not many now.
Regarding changing gear, MF advise you not to change gear on the move, before you jump up and down about that, you will agree that without some expertise in changing on the move it could cause a lot of damage in the wrong hands. Most people change on the move, it does take some practice to do it though without crashing the box.

[Log in to Reply] [No Email]

Gerald J.

06-24-2006 08:51:30

Report to Moderator

Re: Proper way to disengage spinning PTO. on 135 in reply to Old Rake, 06-23-2006 17:51:07

Precisely. If the tractor isn't moving, the ground drive gear isn't moving, so shoving the PTO shifter past neutral while its spinning grinds the sliding PTO gear against the stationary ground drive gear removing metal from both and potentially twisting the PTO shaft when there's no overrunning clutch on the mower. And unless that faulty operating procedure happens, there's no need for the overrunning clutch on the mower with the MF-135.

Point is, its not made for shifting while turning, though it may take a little nudging with the clutch to line up the gear teeth so they will slide into gear.

Gerald J.

[Log in to Reply] [No Email]

Yep

06-23-2006 11:06:14

Report to Moderator

Re: Proper way to disengage spinning PTO. on 135 in reply to Gerald J., 06-23-2006 08:20:03

Our MF-135 has more than 9,800 hours now
Our MF-50 has more than 8,000 hours now
No clutch replacement..just preventive maintenance good operating habits and regular oil changes in engine and drive train.

And beleive me they worked hard with PTO driven
machinery. Last winter we removed hydraulic cover
on both to change hydraulic piston rings. We took
the occasion to make a general inspection of the
drive train and PTO components all gears and bearings were ok. The only PTO repair in all these years was changing one time PTO oil seal on both tractors.

Big Dean is right mentionning that it is "better"
to idle the engine and wait the PTO stops. This is
ok for ideal operating conditions.In real life when you are in the fields using a baler or haybine or other PTO driven machinery often emergency situations occurs you have then to stop immediately to avoid damage or danger.

Many years ago we had two fergusons TEA-20 there was no live PTO on these tractors. We used PTO driven baler...mower...rake..hole digger..blower
no PTO related breakdowns in 45 years of tractoring.

YEP

[Log in to Reply] [No Email]

[Options] [Printer Friendly] [Posting Help] [Return to Forum] [Log in to Reply]

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. [ About Us ]

Home | Forums

Copyright © 1997-2023 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