Grinding Stumps with a 743

[Tyork_tex]

I need to get about 15GPM @ 2500-3000 psi from my 743 to run a Stump Grinder. Should I A: Upgrade the factory pump, Or B: Add a Belt Driven, 12v Clutch pump to the engine to get on/off remote capabilities?

 

[Tyork_tex]

Basically I'm wanting to create a "High-Flo" 743 using a belt driven Clutch pump like this but probably using a double V-Belt driven off the rear off the splined crankshaft on the Accessory end of the engine: https://www.baileyhydraulics.com/CP124-Clutch-Pumps-Bracket-1-86-CID-Rated-GPM-21-7-Rotation I will check flow capability of the factory lines and couplers and probably tie in there. This will allow me to have on demand High Flow for a stump grinder using a simple 12v switch mounted on the control stick or somewhere in the cab.

 

[Tazza]

Basically I'm wanting to create a "High-Flo" 743 using a belt driven Clutch pump like this but probably using a double V-Belt driven off the rear off the splined crankshaft on the Accessory end of the engine: https://www.baileyhydraulics.com/CP124-Clutch-Pumps-Bracket-1-86-CID-Rated-GPM-21-7-Rotation I will check flow capability of the factory lines and couplers and probably tie in there. This will allow me to have on demand High Flow for a stump grinder using a simple 12v switch mounted on the control stick or somewhere in the cab.

It will be interesting to see how you go with this, i'm not sure if it will work or not.
You could upgrade the pump, but you risk extra load on the splined shaft from the drive pumps to the vane pump. The shaft is fairly small, i see potential for it snap with the extra load from a higher GPM pump.
The next hurdle is the hydraulic lines and control block, i don't know just how much fluid it can flow without being a restriction and heating up.