UP Eccentric Crank Testing Jig

M Austin · **Joined:** Sat Feb 05, 2005 1:05 am **Posts:** 470

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.

J3a-614 · **Posted:** Tue May 14, 2013 12:54 am

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. . .

Robby Peartree · **Joined:** Wed Aug 25, 2004 11:16 am **Posts:** 767

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

Robby

UP Eccentric Crank Testing Jig

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