1390 Clutch Problem - AGAIN!!

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Alchad
Posts: 716
Joined: Tue Aug 14, 2007 8:18 pm
Location: Shropshire

1390 Clutch Problem - AGAIN!!

Post by Alchad » Fri Apr 22, 2011 1:12 pm

OK please bear with me (and don't feel obliged to just because I have admin privileges and can erase you all!), but I'd just like to get a few learned heads scratching re my clutch problem.

To recap

1) Complete clutch assembly renewed 4 or 5 years ago, done probably 200 hours work since then.

2) About 2 years ago, I had difficulty engaging gears, tractor split, found one of the clutch alignment grub screw had worked loose and part was sheared off (see pictures below). A replacement grub screw was fitted (with locking nut firmly tightened!!) and the clutch then worked perfectly.

3) A couple of years later and probably 50 hours of work, I again had difficulty engaging gear. The tractor was split yesterday and once again we found a locking nut and 4mm of grub screw in the bottom of the casing. The remainder of the grub screw was still in place. I'm pretty sure it's the new/replacement grub screw that came loose again.

It's also not as though the grub screw has worked loose - it looks like it's been neatly sheared off below the nut!


My mechanic has persuaded me that I'm better off starting afresh with a whole new clutch, but I'm just completely puzzled as to how the identical problem as happened twice, with, as I said very little use of the tractor in the intervening period.

Any ideas??

Thanks

Alchad

Edit - having checked, I don't think it was the new/replacement grub screw that failed, but one of the original ones - see first two photos

Guest

RE: 1390 Clutch Problem - AGAIN!!

Post by Guest » Fri Apr 22, 2011 3:37 pm

Do you think that the originals Alan were or are of inferior manufacture, a weakness in them somewhere? Probably best to replace all 3 and see what happens. Nothing else I can think of that would cause this. ???

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