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Massey Harris & Massey Ferguson Tractors Discussion Forum
Show Parts for Model:

Re: MF35 difficult to shift -- at times

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DavidP, South Wales

10-10-2012 10:14:14
2.97.137.1



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Hi Dale,
No, not in OZ, I'm in South Wales, not New South Wales!!!!! If the clutch is not freeing there are a number of possibilities.
First of all remove the inspection plate under the clutch housing. Using a flashlight inspect the clutch unit for anything that looks to be amiss, one loose release lever screw, position of a release lever different to the others etc...

Have an assistant press the pedal whilst you watch the operation. The pedal movement in each stage should be clearly related to positive movement of the release levers and main pressure plate as it moves rearwards. If it only tries to lift or the movement is absolutely minimal you need to find where the operation movement is being lost. Check that the movement is even all round.

If you have positive movement of 1/16 to 1/8" in the first stage that would be about correct. If the plate is still not freeing it could be down to contamination of the lining/s, or rust causing it to drag.

With the pedal at the bottom of the first stage there should be no clearance on the PTO adjusters. Push down through the second stage. There should still be clearance between the spring coils.

I think that a very likely cause of your problem will be a broken lining on one side of the main plate. Frequently a piece of the lining will lodge somewhere else around the face. This will give two thicknesses of lining on one side. Normal lift of the pressure plate is not enough to free it hence you will get enough drive to move the tractor. Normally this can be seen by one 'corner' of the pressure plate sitting higher than the other two as you turn the flywheel by hand.
Check it visually first and I think you will see something of the above.
DavidP, South Wales

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