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Ford 9N, 2N & 8N Discussion Forum
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Clutch release bearing on 8N

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Greg8N

08-30-2004 07:35:08




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Sorry if this has been asked before, but what is
the 'normal' amount of space between the release bearing and the fingers on the pressure plate?

This would be the clearance when the relaese bearing is pulled all the way towards the rear of the traftor by the two return springs and to clutch linkage is disconnected.

My 8n has about .825" between the two - you have to move the release bearing far off of its stop before it ever even begins to depress the fingers.

This means I am stretching the two return springs more than I should, and it also throws off the linkage geometry.

I am able to measure all this by removing the steering box and looking through the hole in the top of the trans case.

I know I can adjust my threaded rod to obtain a working clutch, but it seems odd that they would have designed the tractor with this much free space.

If it means anything, I am able to wiggle the fingers of the pressure plate by about 3/16" - I am accustomed to them not moving at all on automotive applications.

The pressure plate is original 1952, the disc is new, and the clutch shaft bushings are also new.


Thanks.

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Rob

10-06-2004 04:29:24




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 I just found a clutch release problem in reply to Greg8N, 08-30-2004 07:35:08  
It may be what you are seeing.
The shifter fork, behind the release bearing, is pinned to the hollow clutch release shaft. The ends might be plugged with crud and painted over but the shaft is hollow. Anyway, the pin wallowed out the shaft so the fork slips on the shaft. I lost at least 1/2" travel of the release bearing and the clutch will not completely disengage. I can adjust this clutch any which way but without that 1/2" the release bearing will not go forward far enough to completely depress the clutch levers.
The end of the shaft and the split bushing are worn also and that adds more slop between the pedal and the pressure plate levers.
Probably late for you but there it is for what it's worth.

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Rob

08-30-2004 13:31:43




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 Re: Clutch release bearing on 8N in reply to Greg8N, 08-30-2004 07:35:08  
There's a tool to set the finger height. Check out this webpage clear at the end.



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greg8n

08-30-2004 18:33:55




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 Re: Clutch release bearing on 8N in reply to Rob, 08-30-2004 13:31:43  
Thanks Rob, I had seen that. My pressure plate checked out OK, right at 2" finger height. After a
lot of careful checking I have determined that the tractor is just not *designed* that well in that area. Which surprises me since the rest of the tractor is generally well done.



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Rob

09-17-2004 08:56:23




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 So what did you end up doing? in reply to greg8n, 08-30-2004 18:33:55  
Hey Greg, I'm working on a clutch right now. Seems the finger height was never adjusted as they are at different heights which might explain why this pristine clutch won't disengage...
So what did you end up doing with your clutch?



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Rob

08-31-2004 06:48:17




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 Re: Clutch release bearing on 8N in reply to greg8n, 08-30-2004 18:33:55  
I'm not familiar with the clutch. The N has it's weakness here and there. The clutch has it's problems if posts on this board are an indication. That clutch will stick and some guys block the pedal down when they park it.



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