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Author Topic: oscillating t-case output shaft.  (Read 688 times)

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Offline bushman67

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oscillating t-case output shaft.
« on: May 08, 2010, 09:54:47 PM »
Hey guys... anyone ever get the chance to watch your t-case output shaft rotate with out a drive shaft when hoisted?

Was doing a hack & tap, and cutting the shaft with it idling in reverse to get a nice cut. And found mine oscillates a little as it rotates... however, there seems to be NO play in the shaft when pulled around.

Common? or some issue with my t-case maybe?
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Offline Bnine

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Re: oscillating t-case output shaft.
« Reply #1 on: May 10, 2010, 08:12:38 AM »
That's called runout. You should put a dial indicator on it and find out how much runout there is.

Then look up the maximum allowed runout for a 231 tailshaft according to factory specs.

Hth
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Offline bushman67

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Re: oscillating t-case output shaft.
« Reply #2 on: May 10, 2010, 12:04:42 PM »
it's a late model NP242, but from talking to Modern, there should be ZERO movement. Mine is probably 1/4" without even measuring it. Grrr....
 
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Offline Bnine

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Re: oscillating t-case output shaft.
« Reply #3 on: May 10, 2010, 07:41:27 PM »
While ZERO certainly isnt correct, a 1/4 inch is way to much.

Is this 242 equipped with a magnetic speedo pick up, or a regular gear type?
My Mechanic Calgary
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403-483-1083
[email protected]