Thanks for giving me the shaft info Brian. I take it you would rather have a key way already cut into the shaft. I will look for a pump that will work CW or CCW like you mentioned above. I'm planning on keeping the GPM between 5-10.

Jack, the pump will be limited to operate a tilt cylinder only and possible use will be maybe 5 times per hour during dozing. Hopefully it won't put a lot of strain on the timing gear. My wood splitter pump is about the same size and it is powered by a 5 horse Honda engine.

Interesting comment on replacing the fiber pins with brass. These pins are not supplied as shear pins. They are actually listed as "cushions" and are most likely there to deal with the harmonics of the early gear trains before the addition of dampers and balancers. These "cushions" were eliminated on later engines. Be interesting to see how the pump holds up under operation. The pumping action (under pressure) will actually supply some dampening but not when it's in open circuit circulation mode.
I don't think I'd be to concerned about pumping 5-10 gpm at typical 1,000 psi max. which should be plenty for a tilt cylinder but I would hesitate to think of this becoming a major pumping system.

Paso B, after I pulled the generator off I rotated the fan CCW while watching the gear rotation. The gear that the generator rode on was rotating CCW. Sitting in the operators seat the generator tuned clockwise.

Paso Bob!!!
Note my correction to the generator rpm. Had my gear ratio reversed on original calculation.

Oil Slick,
What are the rating specs on the pump you used?

OM, it's a used pump that Brian Boaz gave me. He might be able to tell you.

That's interesting. In one of the earlier posts Brian stated he didn't know the pump specs and that he obtained the pump from you????

When I went back east to get the 40 scraper a couple years ago I stopped at Brian's on the way home for the night. I told him my plan of of putting the tilt cylinder on the D8 and that's when he gave me the pump. Next I saw Brian at the Santa Margarita show and I told him my machinists can't figure it out. Brain said ship me the generator and A pump and I'll getter done. That's how Brian got his pump back

Hmmmmm...are there any identifying numbers on the pump?

Old Magnet, would your revised shaft speed at 2,664 RPM's be too fast for a typical low volume hydraulic pump? Brian, any comment on keyed shaft or not? Thanks, guys!