212 1R shear pin?

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212richard

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My manual states the power control shaft is protected by a shear pin on "later motor graders". Apparently mine's earlier, and I was just wondering what is supposed to protect it. Accidents are bound to happen, and am trying to think of ways to save the equipment. maybe a soft key in the vertical driven shaft? Or, since it's mounted on a taper, no key at all? Thanks, Fritz

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Sat, May 26, 2012 8:22 PM

Old Magnet

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I'm only familiar with the flanged shear pin arrangement but I suspect the taper shaft with specific torque specs is the safety release for what you describe.

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Sat, May 26, 2012 10:00 PM

STEPHEN

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Reply to Old Magnet:

I'm only familiar with the flanged shear pin arrangement but I suspect the taper shaft with specific torque specs is the safety release for what you describe.

Check the old and late parts books, that part may be backwards convertable

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Sat, May 26, 2012 11:34 PM

shovel man

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Reply to STEPHEN:

Check the old and late parts books, that part may be backwards convertable

My books show shear pin came in at 9T308 I don't know if parts from a 9T machine will fit a 1R some part # are the same in both parts books.

shovel man.

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Sun, May 27, 2012 1:37 PM

Frank Fox

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Reply to shovel man:

My books show shear pin came in at 9T308 I don't know if parts from a 9T machine will fit a 1R some part # are the same in both parts books.

shovel man.

When I got my 212 some had replaced the shar pin with a grade 8 or 9 bolt. Results was a broken power shaft, requiring removal of engine to fix it
Had a hard time finding a replacement/ used shaft
Frank

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Mon, May 28, 2012 9:09 AM

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