1985 Ym336d spindle problem

rrxorb · Nov 9, 2014

Ym336d spindle broke. Ordered new one from Hoye's who confirmed is correct part but spindle is too big to fit in bearing. It's Sunday so can't call them to work out issue. Anybody have experience with this and can offer advice? Here is picture of broken spindle.

Barry 1 · Nov 9, 2014

How much too big? You have to drive the inner race(of the end bearing) on with a brass drift and hammer,and it's a tight fit.

rrxorb · Nov 9, 2014

It's about 1/8" bigger so no forcing it unfortunately. Here is a pic of the old one on top of the new one.

kenmac · Nov 9, 2014

don't know this for sure, but is it possible to just get a bearing from Hoye to fit the new spindle ,and everything else will bolt up. Looks like you have the new part installed except for bearing

winston1 · Nov 9, 2014

Looking at hoye's part pages you will note the old and new styles. one requires that bearing to be an NJ306E bearing. (72mm x 30mm x 19mm). The other style calls for an NJ207 bearing (72mm x 35m x 17mm) May be what you have. I suspect you will find your old shaft to be about 1.181" and the new shaft to be about 1.378".