MF 150 clutch question

Farmalittle

New User
I just bought a MF 150, and the PTO wouldn't engage. So, following the directions I found on this forum, I started by adjusting the free play on the clutch pedal. When that didn't work, I adjusted the three bolts on clutch itself. The PTO works fine now.

I'm not much of a mechanic. I do enough of my own work to be dangerous, and I consistently second-guess myself. I made my own "feeler gauge" that was .0625 thick. I have read on this forum that the gap should be anywhere from .040 to .090. I have also read that the gap isn't as important as the fact that they all need to be the same. Here's my question...if you have made this adjustment, you know that you don't have much room to work. I am reasonably confident that they are all set the same, but I would get a little bit of movement when I would attempt to tighten up the lock nut. How exact do these settings need to be? If one is at .0625 and one ends up at .08 after tightening, is that the end of the world? Am I worrying too much here?
 
If it was me I'd re-adjust it, if the gap gets loose after tightening the lock nut adjust it a little tighter than your gage, then tighten the lock nut, and re-check it. I know it's a pain to adjust it through that hole, but it's more of a pain if you have to split the tractor to fix/replace a clutch. On the other hand someone may say it's fine adjusted the way it is.
 
Hello,
You are correct to be concerned if there is a variation in the adjustments. As has been said the accuracy of the three being the same is more important than the actual figure. When you take into account the amount of wear in the plate linings, the linkage and even the pressure plate and flywheel plate facings no two clutches will ever be the same. Hence the acceptable adjustment variation. When there is a variation in the adjustments you are likely to have the plate slipping slightly each time engagement takes place until full pressure is applied. When all are set evenly the pressure will be applied cleanly and evenly in that brief perion.
DavidP, South Wales
 

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