WD-45 Crank...Strange Sizes!

A. Berenz · May 31, 2008

I am in process of rebuilding my second WD-45 and have come across a strange thing. When mic'n the crank to determine bearing sizes I got a std. size on the rods of exactly 2.375" but the crank (front thrust) measured #1:2.436", #2:2.4775", #3:2.4775". The std. size for crank is 2.4375". Why in the heck do #2 and #3 mic bigger than std? This was a replacement crank I got with the deal when I bought the tractor, as the original was broken. Is the crank from some other engine or what? I did re-mic 3X and even checked cal on mic. Did allis make two different size main journals? PLEASE help! Thanks all

Jerry Coulter · May 31, 2008

According to the AC service manual, front main journal diameter is 2.435 to 2.4365" while center and rear are 2.477 to 2.478"

A. Berenz · May 31, 2008

OK, so just to make sure, if I order the std., "front thrust" main bearing kit, listing std. journal size @ 2.437" I should get the #2 and #3 bearings sized @ 2.477" with the smaller #1 bearing right? Just want to make sure since the parts sites only, apparently, list the #1 bearing size...

A. Berenz · May 31, 2008

Thanks for the help! I have the manuals but can't find them! Wife must have put them up somewhere. She's at work and I was wanting to get the bearings on order tonight while I had time...

The good news is that it looks like I have a close to perfect Std. R/M crank!

WD-45 Crank...Strange Sizes!

A. Berenz

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