Belt vs. gear driven P/S pump, 2-600B

[RGV_hay]

It has been brought to my attention that an Eaton belt driven power steering pump with separate reservoir & filter or a Barnes gear driven power steering pump with self-contained reservoir was offered with the 200B to 600B gasoline utility series in the late 1950"s. Does one have an advantage over the other?
 

[Joe (Wa)]

The Eaton pump is 3.5 gpm, 900 psi used mostly on utilities with a PS cylinder. For me the reservoir on the valve cover is an impediment and prone to leakage due the vibration. If converting from generator to alternator mounting a double pulley gets kinda tough. You will probably find it easier to locate repair parts or another substitute for this pump than the Barnes.

The Barnes pump for utilities with PS cylinder is 6 gpm, 1030 psi. The extra boost is helpful in getting out of slow travel tight spots with a loaded bucket. There are substitute bearings, shaft seal and other minor parts available but the pump is basically a throw-away due to the configuration. Generally non leakers except possible shaft seal leak into the engine gear train that may be undetected before it ruins the pump.

The Barnes pump for Ag tractors with Char-Lynn is 4 gpm, 1050 psi.

Personally I always convert to an alternator and don’t want to deal with a separate reservoir on the valve cover. I changed from an Eaton pump to a Barnes 4 gpm on my 310. It works ok but my PS cylinder came off a 700 Ford and is in excellent condition. The 700 & 900 Ford cylinders are mounted up on the left side of the engine and are not subjected to much of the wear and stress of the front mounted cylinders. I wouldn’t recommend the 4 gpm on a marginal cylinder. I have an excellent Barnes 6 gpm that I will someday install when I get over being so lazy.

Joe
 

[RGV_hay]

Thanks for all the info. I'm not finding a new Eaton pump replacement for my 310B. If anyone knows of a new one, original part# G45055, I'd be interested. I have located a new gear driven; I'll find out whether it is a Barnes, original part# G45157, or Char-Lynn, original part# G45231, although, from the specs, either should do. I pulled the part#'s from a Case 300B-400B Parts Catalog, revised 1960.
 

[JGarner]

The Barnes, now part of Eaton, pump is no longer available as it was a Case contract pump. Some parts are still available but the case specific PS parts are not. I dealt via email with a very nice customer service lady at Eaton that sent me exploded parts diagrams of two versions of this pump with available/nonavailable marked on the parts list for the newer version.

I have these parts diagrams and parts list as pdf files, should I put these up in the YTMag site (Case photos??) somewhere?

Is this of universal interest to those of us with the Charlynn steering system using the Barnes pump? 500b/600b and 530/630 ag tractors used different PS system, pump AND power assist units.

Jim
 

[RGV_hay]

I'm not sure on how to post the pdf files, but the updated info would great to see.
 

[RGV_hay]

The only P/S pump available is the gear driven, part #G45231, and it took some looking; met some nice people along the way. Turned up at All States Ag Parts.
 

[RGV_hay]

Joe,
I am having no luck locating a new or rebuilt Case power steering valve/cylinder; I just remembered that you used a Ford 700 unit. I looked it up and found a UF00950 PS Cylinder for a Ford 701, 900 & 901 Rowcrop at Walt's Tractor Part's that is a dead ringer for my Case 310B. Did you find the mounting and hose connections to be compatible? Thank you.