MF275 Independent PTO always on

jjgurley · Apr 12, 2021

Judging by the lever, my PTO is an independent style. Sitting in the shop with the engine running, it turns with force at all times. I don't know which lever position is which, although it doesn't seem to matter. Maybe I'm not understanding how it's supposed to work.

old · Apr 12, 2021

I don't know that tractor as such but on many tractors the PTO will spin engaged or disengaged due to the oil causing it to spin but not with any real power. Or in other words if it was hooked up to something the oil driving it would not be strong enough to cause the machine to run

jjgurley · Apr 12, 2021

(quoted from post at 15:50:41 04/12/21) I don't know that tractor as such but on many tractors the PTO will spin engaged or disengaged due to the oil causing it to spin but not with any real power. Or in other words if it was hooked up to something the oil driving it would not be strong enough to cause the machine to run

All I know is that it's turning with enough gusto that I can't stop it with my boot (and without breaking my leg).

jjgurley · Apr 12, 2021

Never mind - I was able to slow it down in the lever forward position, so I think it's just a wonky brake.

Dieseltech · Apr 12, 2021

The lever has LONG travel, and forward is PTO off, which applies the brake. If the brake is bad, or PTO clutch pack discs/plates are burned/warped the PTO will turn with
the lever off. If the clutch pack needs repair, lift cover and trans/diff joint split is needed to get the hydraulic pump, and PTO clutch pack out.

DavidP,South Wales · Apr 13, 2021

Hi, NEVER EVER try to slow or stop a pto shaft with your hand or
foot! Always use a piece of timber wedged against the shaft or
drawbar. If you are reducing speed a little with the lever it may be
that you are passing the detent and reducing the oil flow. If the brake
pad is worn out and you cant stop the pto the liklihood is that the
plates in the clutch pack will be warped and seized together even
when there is no oil pressure to hold them engaged.
DavidP,South Wales

Tom from Buckeye Lake · Apr 18, 2021

The PTO shaft on my 150 with IPTO also turned while disengaged. I removed the right cover and got a small pry bar in the brake puck. It was stuck and released.

The surface area of this disc brake style is only around one square inch. I believe this brake is designed to hold the shaft while disengaged. In my opinion there is no way this brake will stop driven equipment IE: my Brush Cutter.

I installed a over-riding clutch to use while running the cutter.

Just my Opinion

MF275 Independent PTO always on

jjgurley

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old

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jjgurley

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jjgurley

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Dieseltech

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DavidP,South Wales

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Tom from Buckeye Lake

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