650 BE-GE pump question

The #650 pump is rated for 850 psi operation max.
The problem with these low pressure pumps is that they require large bore cylinders.
No reason you can't run a blade with this pump if cylinders are matched appropriately. You do realize that it only pumps when in gear and engine main clutch engaged depending on application.
These pumps have a rather different and obsolete sealing system that may need to be overcome and worn shafts and bearings severely affect performance with severe leakers blowing cover gaskets and may even warp the covers.

If you do use the rear mounted BeGe, be sure and build some sort of protection around the valves, hoses and tank. You will back into something and bust things with out a guard. The voice of experience. LOL!!! We had good success with a BeGe on a farm style blade attached to an AC HD9. Even put a tilt cylinder on it.

Casey

I operated a 7U D-4 and a 3T D-7 for years with BeGe pumps and never had an issue. The D-7 is still a working dozer and has lots of dozing hours on it. Having the Cat pump powered by the front of the crankshaft with live hydraulics does tend to spoil a person. Like OM said, the rear mount only pumps with the master clutch engaged.

Thanks fellas. OM, I am aware that it’ll only pump with the clutch engaged, that one of the reasons why I wanted to ask my superiors. Would the cylinders hold their position during gear changes? My thought is no but since I haven’t operated the system I’m assuming.

It will hold during gear changes. The biggest issue we found dozing with ours was, no float position and BeGe valves are notorious to wear and leak by. We seemed to send them regularly to Rutter Army to get them tightened up. OOOORRR just let them sag to the implements stops.

Thanks. Would a 4” bore be large enough to work with the pump? I’ve looked around and found several I think would work.

What tractor/blade are you working with? 4" bore cylinders (2) happens to be what the BeGe blade on the D6 used back in the day. I'd say that would be minimum size.

Old Magnet, my tractor is a RD4 and I have an unknown blade setup that was given to me, it includes the frame and trunions. The frame is a few inches wider than my guage and I’ll have to fabricate new trunions mounts.

Old Magnet, my tractor is a RD4 and I have an unknown blade setup that was given to me, it includes the frame and trunions. The frame is a few inches wider than my guage and I’ll have to fabricate new trunions mounts.