McCormick w4 hydraulic system

[Riversedgefarms]

Hi everyone. This summer I stumbled upon a video on Facebook with an old farmall H that was equipped with a loader and was loading round bales. Now I have a McCormick w4 that is also equipped with a loader and has the stock hydraulic system set up on it. Now the reason for the relevance of the video. The farmall H has the same 4 cyl gas engine as the w4. When I asked how the fellow was able to lift large rounds with that tractor, he said that there was a hydraulic pump upgrade that was available from factory and that his tractor had been equipped with it. Obviously we can't access the factory upgrade anymore so here is my question. Does anyone know what size pump it was in the upgrade or any idea what the flow rate /psi out out was on these pumps? I figure if I know the size of the pump anything is possible to hook up a new style pump with a little machining.

 

[Janicholson]

Probably 2 options. The W series has no offset crank in the front bolster, so a pump mounted to the front bolster (machining for a flat mount might be needed), or a engine mounted pump behind the oil
fill winged cover , powering the distributor. The engine's cam gear is aluminum, and nor strong enough to drive the pump, so a drive gear from a super W4, Super H, or 300-350 is needed on the can shaft.
The front cover from yours does not have the correct bolt hole alignment for the engine mounted pump. A W-4 newer than 1951 or Sw-4 is needed. Jim

 

[John M]

Whats the "stock" set up you have now?

 

[Charlie M]

I know the lift all pumps were upgraded from 600 PSI to I think it was 800 psi.

 

[D Slater]

Only original hydraulic system offered for a W-4 was with a hydraulic pump mounted to the engine. That system should have more
pressure than any that was put on a H by IH. Maybe the fellow had a PTO pump or larger diameter lift cylinders if it has more power
than you. Hydraulic attachment for a W-4 notes that tractors below serial number 26549 need the following parts ordered, gear 6664DA, later
advanced to 6664DB, Front plate 352167R11, cover 352168R11 and gasket 352169R1. Complete attachment had everything else, pump,
lines, reservoir, ETC.

 

[Bob 7337]

A easy to do it would be go with pto pump. Easy to install. It wouldn't be live but belly pump was not eigher. Parts are easy ti find and not too expensive.

 

[1974vette]

I have a couple of 54 sw4s with factory live hydraulic setups. The pump is with the distributor style like a 300 350. I also have a sw4 that
had a
Char-lynn pto style pump. Not sure which had more lifting capacity.

 

[D Slater]

Industrial W-4 could have a drive attachment to power things off the front of crankshaft. Think the W-4 used the same bathtub
frame. Engine driven pump on side of engine relieve valve for a W-4 was set at around 1200 Psi and about 10 gallon a minute.

 

[BarnyardEngineering]

To the best of my knowledge, the W-4 did not have a "factory" hydraulic system.

The factory system on an H is a belly pump unit that mounts through a hole in the bottom of the clutch housing and drives off the transmission countershaft.

A W-4 has a solid cast iron tub chassis, and no provision, or ground clearance, for such a unit.

Hydraulics on a W-4 would be aftermarket only, a pump driven off the crankshaft in front, a PTO-driven unit in the rear, or the M&W distributor driven unit. Any of these would outperform the factory hydraulics on an H and provide you plenty of lifting power for anything but the heaviest round bales.

 

[John M]

All the bathtub 4s used the same tub. Im trying to remember, seems like my I4 parts book shows a mounting bracket for mounting a pump.

 

[gmcdeadhead]

To the best of my knowledge, the W-4 did not have a "factory" hydraulic system.

there was a factory hydraulic system for the W4 , all the components are listed in the W4 parts Manuel

 

[mccormicksw4]

I have 1 W4 and 3 SuperW4s with the factory hydraulic set up. Like mentioned before it was offered on late w4 tractors. I move round bales with the w4 but hardcore 5 foot bales can get hard to steer and if in snow you need added weight on the rear
I am confused about your "stock hydraulic system" - that style has the pump mounted at the distributor. how would you machine a upgraded pump to work? you may have front mount crank driven pump which was only available on an I4
the earlier W4s can be fitted with an M&W pump but the cam gears are not as heavy for driving a pump. I have never seen a c152 with any aluminum gears