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UP Eccentric Crank Testing Jig
https://www.rypn.org/forums/viewtopic.php?f=1&t=35012
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Author:  M Austin [ Mon May 13, 2013 11:58 pm ]
Post subject:  UP Eccentric Crank Testing Jig

Not quite sure what force it takes to spin a main crank pin out of quarter, but it must have happened often enough to warrant building a jig to test it on a regular basis.

Attachments:
UPq1.jpg
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UPq2.jpg
UPq2.jpg [ 275.63 KiB | Viewed 3737 times ]

Author:  J3a-614 [ Tue May 14, 2013 12:54 am ]
Post subject:  Re: UP Eccentric Crank Testing Jig

Interesting that the UP apparently had so much work of this nature to come up with such a shortcut. This work can be done without such a rig, but it takes a bit longer as part of the whole job of reassembling and setting the valve gear after an overhaul.

No room for such creativity or originality with diesels it seems. . .

Author:  Robby Peartree [ Wed May 15, 2013 12:49 am ]
Post subject:  Re: UP Eccentric Crank Testing Jig

I wonder how the different ways to catch a slipping locomotive could have an effect on the quartering of a set of drivers?

Robby

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