MF 575 pto confusion :-D

would love to see whats in there as ive never heard of or seen one and the only two options shown in the french and english parts book are single speed ground speed or two speed ipto
Our 550 has the removable shaft
Im going to whip left axle off an have a look in to see what goes on inside
20170724_112508.jpg
 

Ger575

Member
Location
Mayo
All adjusted and pto clutch plate appears stuck. Will just have to try using lift raising and lowering heavy-ish load with clutch pedal depressed. Eventually it might relent and come unstuck, if not, then it looks like I've got at least ONE project for the winter lol.

Stuck clutch plate appears to be one of the few jobs one cannot sort out with a vice grips and a club hammer :-D

Still can't feel second stage on pedal.

Release bearing is about 1/8" from the clutch fingers, all play taken out of linkage. Pedal immediately moves the clutch release arm, approx 1 inch of pedal movement till the release bearing touches the clutch fingers.

I guess I can hook up something like a heavy rotovator, get pto engaged then increase engine revs with the clutch in. The torque of the engine might then free up the pto plate. At the same time I can be lowering/raising the rotovator while the clutch is in also.

The one I am thinking of using for this (a neighbouring farm) has a slip clutch on the pto shaft so I'll not be making shear pins go pop while trying to unstick the clutch plate
 
Last edited:

Ger575

Member
Location
Mayo
I take it that's 2 speed ipto. Seen plenty of those and plenty of single speed plus ground speed but never a 2 speed without ipto

Andy, as in my above post, all seems to be adjusted ok on the clutch. It appears the pto disk has gotten stuck, either on the splines or I guess to the cover plate. Hopefully it will relent once I get at it some day.

With the pto plate stuck, would that explain why the clutch pedal feels the same all the way through its travel with no distinct second stage?

Pto disk has plenty of clutch material left if indeed I eventually get the darned thing to move.

While we bought it from a dealer, the previous owner's health (Parkinsons) meant he hadn't really used the tractor for pto duties for a while, just small time yard work. Being laid up, I guess condensation in the bellhousing and lack of use contributed to the pto disk getting seized.

Not to worry though, nothing that cannot be fixed :)

Need to overhaul the brakes next. They are fine but a bit too easy to lock up compared to what they should be. Decent amount of adjustment left in both brakes so it seems I have a bit to play with. Balls in the brake actuators might be a bit pitted and not rolling smoothly in their little ramped recesses. Do the brakes get their oil bath from the backend oil or do they get it from the reduction hubs on the outside?
 

Bloders

Member
Location
Ruabon
brakes get oil from the back end.
the balls in the actuator could have worn oval, so you lose the progressiveness of them. Had this on our 590. discs had plenty of meat left but brakes would grab terrible.
 

MF-ANDY

Member
Location
s.e cambs
You should be able to feel the second clutch. Get someone to press the pedal while you look up (engine stopped of course) to see if you can see the pro pressure plate move. You could try adjusting the three screws a bit tighter temporarily to see if that frees it. The brakes are lubricated by the back end oil and rarely give trouble
 

Ger575

Member
Location
Mayo
Bloders might be right, my balls might have gone slightly oval (ouch :) )

Will see later on when I get as far as having a peep behind the trumpet housings.

Clutch feels the same all the way down Andy. Confused dot com hehehe.
 

MF-ANDY

Member
Location
s.e cambs
You need to have a look. You should be able to feel second clutch as not only are you compressing the 12 main clutch springs but also the pto clutch belville spring
 

Ger575

Member
Location
Mayo
You need to have a look. You should be able to feel second clutch as not only are you compressing the 12 main clutch springs but also the pto clutch belville spring

Doesn't make any sense :)

No fun if it were easy mind you.

Clutch has the same weight all the way till the back of the pedal hits the bulkhead panel cover.

I hope the hub isn't broken out of the pto disc, thinking out loud
 

multi power

Member
Location
pembrokeshire
Doesn't make any sense :)

No fun if it were easy mind you.

Clutch has the same weight all the way till the back of the pedal hits the bulkhead panel cover.

I hope the hub isn't broken out of the pto disc, thinking out loud
Are you sure you have no play in the linkage? You should easily notice the second stage on the pedal
 

Pennine Ploughing

Member
Mixed Farmer
hub broken or not in the plate would not make any difference to feel on the clutch pedal,
sounds to me if it feels the same all way down, then it is not traveling far enough to make contact and lift the pto pressure plate off its seat to free the clutch,
you really need to lye under it with a good light, while someone presses the pedal up and down, to see the movement on it from the underside, see if the pto pressure plate moves at all, if it does there should be a small gap for the plate to spin,
but sounds to me its not lifting at all
 

MF-ANDY

Member
Location
s.e cambs
hub broken or not in the plate would not make any difference to feel on the clutch pedal,
sounds to me if it feels the same all way down, then it is not traveling far enough to make contact and lift the pto pressure plate off its seat to free the clutch,
you really need to lye under it with a good light, while someone presses the pedal up and down, to see the movement on it from the underside, see if the pto pressure plate moves at all, if it does there should be a small gap for the plate to spin,
but sounds to me its not lifting at all
Think I said that
 

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