1952 oc3 with ware loader and backhoe question

[bmk8]

What is the displacement of the hydraulic pump?  GPM? PSI?  I would like to convert it over to be hydraulically driven instead of stock.  Would the stock pump put out enough to drive the hydraulic motor?  What hydraulic motor to get?  Size? any help appreciated thanks mike

[John Schwiebert]

The best I can tell you is when I get back from a business trip in a week I will need to find my formula. There are several formulas out there that let you measure up your old pump and it will calculate the GPM. Then you can find a replacement pump

[bmk8]

that would be great...but i dont need a replacement pump.  I want to rip out the clutch and drive shaft and install a hydraulic motor to runn the tracks.  I am just not sure if the pump is big enough.  The motor i want to use, uses 30 gpm and full rated rpms of 858 at 470 nm of torque....should be around 380 ft lbs of torque.

[John Schwiebert]

O. K. At what RPM do you want to run the engine to do this. What type of motor is this gear, vane or piston? I think right now you need to pump between 40-45 GPM at that RPM. Remember at 1500 PSI it takes one horsepower for each one gallon of flow. That Hercules doe not have that much power/ Give me more details.

[bmk8]

O. K. At what RPM do you want to run the engine to do this. What type of motor is this gear, vane or piston? I think right now you need to pump between 40-45 GPM at that RPM. Remember at 1500 PSI it takes one horsepower for each one gallon of flow. That Hercules doe not have that much power/ Give me more details.

want to run about 800 to 1200 rpm
the motor i am looking at is here:
http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... 0437302825

would this work to drive the tracks in first gear?  using the stock hydraulic pump.  is the stock pump 1500 or 2500 psi?  thanks mike