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Massey Harris & Massey Ferguson Tractors Discussion Forum
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Topic: mf35 clutch adjustments
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john in the highlands

07-11-2012 10:03:04
205.210.52.119



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I've read some of the previous posting on the 2 stage clutch. I've checked the free play on the peddle. I've dropped my loader off so I can access the under side, and I've consulted the tractor manual reference to adjusting the clutch when it's newly installed. It says the finger bolt adjustments should only be made using a new (not the old) disc in place. However, in my case, my cluch is fairly new and I won't be splitting my tractor, so what do I do about this:2 of the bolts are very close to the throw-out bearing and the 3rd is atleast twice as far away (1/8th of an inch). I'm not aware of which distance is more correct, all three should be the same, right? My manual allows me to adjust the other three bolts to .09 after the first 3 bolts have been adusted to their proper gap. Currently I can shift gears no problem and I can get out of engine driven pto but I can't get into engine driven pto while the engine is running. There's no problem getting into and out of ground driven pto. What lubricates the throw-out bearing, I'm is definetly cover with "oil", everything else looks dry as far as I can tell. Thanks for your consideration!

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DavidP, South Wales

07-11-2012 16:18:14
2.101.119.83



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Re: mf35 clutch adjustments in reply to john in the highlands, 07-11-2012 10:03:04  
Hello John,
With the tractor joined the adjustments are a bit more difficult. Adjustment of the clutch is not an exact science. The figure of 090 is approximate. What is far more important is that the release finger screws are adjusted the same. Don't worry about the new or old plate as long as it has sufficient life left in it and its free from contamination. When you have a significantly larger clearance on one or two of the release levers its usually an indication of a broken lining. The broken piece becomes lodged next a good part. You will have two thicknesses of lining on one side of the plate in one place and the normal one on the other. This extra thickness being clampsed alters the lever height. Using a good torch (flashlight for our friends across the pond) turn the flywheel slowly and inspect the edge of the plate. It can be seen...just. Look for any variation. If its OK you can adjust the screws. Ideally you should have the screws in at least the depth of the lever. Press the pedal down until it almost makes contact with the highest screwhead. Secure the pedal in this position. Confirm if you have a gap with a feeler gauge. Turn the flywheel and set the other two to this figure.

This is not perfect as it can vary slightly by the amount of wear in the carrier on the input shaft. Its as accurate as you can get with the tractor joined.

Difficulty in engaging the engine PTO is usually down to excessive clearance on the 3 peripheral adjusters and/or a drag on the PTO plate due to contamination. Don't be afraid to reduce the clearance down to say 080. Have someone operate the clutch in the second stage and observe the operation in case you are losing movement somewhere.

The release bearing is 'packed' (relative term) with greas when new. When I replace a bearing that has rubber shields I always gently prise one out and add more grease. The manufacturers will say that this is wrong. I have never had a bearing fail after additional greasing in my near 40 years with MF's.
Hope this will help
DavidP, South Wales

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john in the highlands

07-12-2012 09:40:19
205.210.52.119



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Re: mf35 clutch adjustments in reply to DavidP, South Wales, 07-11-2012 16:18:14  
Thanks, Ill give it a try.

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