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Unusual Clutch Finding


 
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Ed_F
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PostPosted: Mon Feb 24, 2014 5:10 pm    Post subject: Unusual Clutch Finding Reply to specific post Reply with quote

I want to thank all of those that gave me advice on supporting the engine and rear end for a split on my 3600. I shimmed the front axle, blocked both front wheels, used two floor jacks and rolled it backwards. Worked well.

I found a pin and 2 washers in the bottom of the bell housing. The pin and washers came from one of the three lever arms the throwout bearing engages to activate the clutch. Basically a hinge pin. The small cotter pin that holds it in place had sheared off.

I put the pin and washers back in place with a new cotter pin, and hope my problem is solved. Bolted the halves back together. The clutch was installed 6-7 years ago. Looks very good externally.

Has anyone else had this particular problem??
 
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Bern
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PostPosted: Mon Feb 24, 2014 7:32 pm    Post subject: Re: Unusual Clutch Finding Reply to specific post Reply with quote

Cotter pins don't just fail. Something caused that to happen. Did you pull the pin out and take a close look at it? What did the others look like?
 
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RickB
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PostPosted: Tue Feb 25, 2014 2:38 am    Post subject: Re: Unusual Clutch Finding Reply to specific post Reply with quote

Installing the headed pin backwards can cause premature failure of the cotter pin. The head on the pin should face the direction of clutch/flywheel rotation.
 
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Ed_F
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PostPosted: Tue Feb 25, 2014 4:07 am    Post subject: Re: Unusual Clutch Finding Reply to specific post Reply with quote

It could be that the pin was originally installed backwards?? I oriented the pin in the same direction as the others...facing thee direction of rotation.
 
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Ed_F
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PostPosted: Tue Feb 25, 2014 4:26 am    Post subject: Re: Unusual Clutch Finding Reply to specific post Reply with quote

I agree Bern, that's why I posted this issue, but I couldn't see anything different between that lever and the other two. The other cotter pins were unscathed...like new. In fact, the whole clutch looked like new externally, and it's 6-7 years old.

Perhaps the pin was originally installed backwards, as suggested above?? That would put all the centrifugal stress on the cotter pin, rather than on the pin head??
 
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Bern
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PostPosted: Tue Feb 25, 2014 5:29 am    Post subject: Re: Unusual Clutch Finding Reply to specific post Reply with quote

Yes, that would make sense, although the pin I'm thinking about (#26) is headless, it has cotter pins (#27) and washers (#25) on both sides. I don't believe I've ever seen these pins headed. It would be tough to do given their shape.

 
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Ed_F
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PostPosted: Tue Feb 25, 2014 6:10 am    Post subject: Re: Unusual Clutch Finding Reply to specific post Reply with quote

I've seen that same diagram before, but all of my pins have heads. I got this clutch from my local dealership.

Here's hoping that we figured it out, or I'll have another split to do...
 
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Lynn Patrick
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PostPosted: Tue Feb 25, 2014 6:46 am    Post subject: Re: Unusual Clutch Finding Reply to specific post Reply with quote

I saw the same thing on my BIL's 960 diesel many years ago. We split it, replaced the cotter pin, checked the others, put it back together & he used it for many, many years after w/it never happening again!
 
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Bern
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PostPosted: Tue Feb 25, 2014 5:09 pm    Post subject: Re: Unusual Clutch Finding Reply to specific post Reply with quote

If your pins have heads, then by all means, install them like Rick B said.
 
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