Ralph Sanderson is not widely recognized as the inventor of hydraulics. The principles of hydraulics have been used since ancient times, and credit is often given to notable figures such as Archimedes and Blaise Pascal for their contributions to the field. Sanderson may have made contributions or advancements to hydraulic systems, but he is not typically cited as the sole inventor.

Hydraulic motors and hydraulic pumps are both components commonly used in hydraulic systems, and while they serve different functions, they share several similarities:

Both are Hydraulic Components: Hydraulic motors and hydraulic pumps are both integral parts of hydraulic systems, which utilize pressurized fluid (usually oil) to transmit power.

Both Convert Energy: While they convert energy in different ways, both hydraulic motors and pumps are involved in the conversion of mechanical energy to hydraulic energy or vice versa:

Hydraulic pumps convert mechanical energy (often from an electric motor or an engine) into hydraulic energy by pressurizing fluid and creating flow.

Hydraulic motors, on the other hand, convert hydraulic energy from pressurized fluid into mechanical energy, which can then be used to drive machinery or perform work.

Both Operate via Fluid Flow: Both hydraulic motors and pumps operate by controlling the flow of hydraulic fluid. Hydraulic pumps create flow by drawing fluid into the pump and then pressurizing it, while hydraulic motors use the pressure of the fluid to generate rotational motion.

Both Have Inlet and Outlet Ports: Hydraulic motors and pumps typically have inlet and outlet ports for fluid to enter and exit the component. In pumps, fluid enters through the inlet port and exits through the outlet port, while in motors, fluid enters through the inlet port to create motion and exits through the outlet port.

Both Utilize Seals and Bearings: Both hydraulic motors and pumps often contain seals and bearings to prevent leakage and reduce friction, ensuring efficient operation and prolonging the lifespan of the components.

Despite these similarities, it's important to note that hydraulic motors and pumps serve different purposes within a hydraulic system and operate in different ways to fulfill those purposes. While pumps are primarily responsible for generating flow and pressure, motors are designed to convert hydraulic energy into mechanical motion.

Hydraulics in car jacks work on the principle of Pascal's law, which states that pressure applied to a fluid in a confined space is transmitted equally in all directions. A car jack uses a hydraulic system consisting of a pump, cylinder, and piston. When the pump handle is operated, it forces hydraulic fluid into the cylinder, which causes the piston to move and lift the car. The hydraulic system allows for the multiplication of force, enabling the car jack to effortlessly lift heavy vehicles.

A 2155 w/o 4wd holds 50 qts of hydraulic fluid. A 4wd takes 53.2 qts.

To check hydraulic fluid in a 2040 john deere when setting in the seat with both feet placed on foot boards look on right side behind your heel of foot. Look all the way back to area where axle housing, foot floor board (right foot) and rear housing under seat meet. There will be a small cap that will unscrew and when pulled up will have a dipstick on it.. This cap will look like an old dimmer switch like used to be in trucks or cars. It really doesn't stand out and is about level with the floorboard...

Crankcase: 5 qts (4.7L)

Hydraulic: 32 qts (30.3L)

Move the seat ahead and it's the yellow knob unscrew and check while setting on threads.

Real pain. You must remove the fuel tank, radiator, and hydraulic oil cooler. There will be a plate that these items sit on that must be removed. Then disconnect the drive line coupler in front of the motor. You will need an 1 1/4" open end wrench to disconnect the oil lines on each side of the pump. There will be a small return oil line at the bottom of the pump to remove. There will be four 1/2" bolts about 4" long to remove from the front of the engine block that connects the pump frame to it. This unit is heavy! Suggest you wear leather gloves and use a lift or get help from a friend. Been there, done that!!

On mine, it's right next to the shifter. Yellow cap. I think it says "oli" which is a little confusing.

John Deere recomends using JD Low viscosity Hy-Gard Transmission/Hydraulic fluid in it's equipment. Please check your owner's manual for any specific requirements, if one is available. There is no equivalent on the market that I could find. The fluid keeps solvent in low temperatures and can be used in Transmissions and Hydraulics, separate or common resevoirs. I am not a John Deere expert..just a owner/user. From a web site... Hy-GARD® JDM J20C Transmission and Hydraulic Oil

John Deere Hy-GARD® provides the absolute best performance and wear protection for John Deere hydraulic and transmission systems. John Deere Hy-GARD® is recommended for equipment with either common system reservoirs or separate transmission and hydraulic systems including those with wet brakes and wet clutches. John Deere Hy-GARD® is an exclusive formulation containing a viscosity improver additive to assure optimum viscosity at all temperatures. This additive provides critical component protection, especially during startup and under heavy load. John Deere Hy-GARD® also contains friction modifiers to provide smoother clutch engagement and higher braking capacity with minimum chatter. John Deere Hy-GARD® exceeds JDM J20C specifications and only John Deere Hy-GARD meets John Deere's exacting performance requirements.

10 Gallons total

The hydraulic oil is shared with the Differential and Transmission.

One-way valve is used for the hydraulic fluid does not return.

A hydraulic drive system is a transmission system. This system uses hydraulic fluid that has been pressurized to make a machine work. Most of these systems utilize hydraulic cylinders.

Hydraulic machinery uses a liquid usually oil under pressure to transmit energy, hydraulic machine use the power of fluid to work, hydraulic machine are part of our everyday life.

To lift things.

Electrohydraulic systems are designed with both manual and automated features. The two work together so that the user doesn't have to do everything manually. The problem with this is that if there is a problem with the automated feature, then the entire system won't work properly.

Pressure Exertion: When a force is applied to a small piston or area on one side of the hydraulic device, it creates pressure within the enclosed fluid. The pressure is given by the formula P = F/A, where F is the force applied and A is the area over which the force is applied.

Transmission of Pressure: The pressure generated is transmitted through the incompressible hydraulic fluid to all parts of the system. The pressure is the same throughout the fluid due to Pascal's law.

Larger Area on the Output Side: The hydraulic fluid transmits this pressure to a larger piston or area on the other side of the hydraulic device. Since pressure is force per unit area, the larger area results in a higher force output. The output force (F_out) can be calculated using the same pressure formula (P = F_out/A_out), rearranged to solve for F_out: F_out = P * A_out.

Hydraulic drive systems like gear pumps, rotary vane pumps, screw pumps, bent axis pumps etc. One real life example of hydraulic pumps is the brake master cylinder in a car. You also see hydraulic pumps in excavators.

Hydraulic motors are commonly used in military vehicle wheel motors, crane drives, high powered lawn trimmers, and winches. William Armstrong was one of the first to construct a hydraulic motor.

Hydraulic actuators. Also called hydraulic rams or hydraulic cylinders.

how to calculate hydraulic motor torque

Where can I go to get a hydraulic license

DISADVANTAGES

Hydraulic fluid is highly corrosive to most of the aircraft materials.

Due to the heavy loads experienced in a typical hydraulic system, structural integrity is a must which also means higher structural weight for the aircraft in addition to the weight of its hydraulic lines, pumps, reservoirs, filters, & etc.

Hydraulic system is susceptible to contaminations & foreign object damage (FOD).

Mishandling and constant exposure to hydraulic fluid and its gas fumes without proper equipment and precautions is a health risk.

If disposed improperly, a hydraulic fluid is an environmental risk.

Behind front grill in a canister. Simply unscrew the canister and there is a cartridge filter inside. Car Quest carries the replacement filter for around 40 bucks.