3414 Hydraulic pump

I have a International 3414 with a loader and a hoe that needs a new front mounted hydraulic pump. It has a TRW pump on it now that is marked 531271. Does anyone know what gpm this pump is or what GPM should be on my tractor?

Any pump can be any GPM depending how fast it turns. You need a pump that is around 2 to 2.5 cubic inches per revolution. That would have a rating of around 17-24 GPM @ 2000 RPM. The 3414 takes the same pump in front as a Ford 4000 with a backhoe/loader, Case 580CK, John Deere 350 or 450 crawler-loader, etc. Very common. In your sitution - one thing to consider. The original setup with the 3414 came two ways. One had a pump with a keyway insteaad of splines. That was just the early ones. Then they used a pump with a small splined shaft and a special driveshaft with one small end (to fit the pump) and one big end to fit the spline drive on the crankpulley. Your best bet is to just get a standard pump with the 7/8" X 13 splined shaft and use 7/8" X 13 all the way. This way standard Case, Deere or Ford parts will fit. You can buy all the coupler parts here on the Website for a Ford loader.
The original pump on my 3414 was a Cessna/Eaton 2.33 c.i. per rev, # 25504LSA, serial # D971027BB, SAE B two bolt mount with SAE 20 on the inlet and SAE 12 on the outlet (both female ORB). Set up for counter-clockwise rotation when viewed from the drive end. This is the correct pump from Cessna. I used a Webster-Danfoss on mine only because I got a better buy on it. Mine was $280 new. Webster makes pump with the exact same dimensions as the Cessna.

http://www.surpluscenter.com/Hydraulics/Hydraulic-Pumps/Gear-Pumps/2-33-cu-in-CESSNA-25504LSA-HYD-PUMP-9-4067-C.axd

Great stuff I have a 3444 same pump.Where did you find the Webster?


Thx Bob