What are the types of hydraulic motor?
There are three types of hydraulic motors: gear, piston, and vane. Gear motors are compact and provide continuous service at rated power levels with moderate efficiency.
Can a piston pump be used as a motor?
An axial piston pump is a positive displacement pump that has a number of pistons in a circular array within a cylinder block. It can be used as a stand-alone pump, a hydraulic motor or an automotive air conditioning compressor.
Can a pump run backwards?
If the motor and pump are running backwards, the pump can often still move water, and the water will flow the normal direction through the pump. A backward running pump will deliver less water, at a lower pressure, and will typically consume less electricity.
What would cause an electric motor to run backwards?
Since each wire consists of a positive and negative current within the magnetic fields, the flip-flopping of main and starter wires causes the motor to run in reverse rotation. This easy switching of wires works because the polarity of the magnetic field is reversed, thus reversing the motor.
What causes reverse flow in a pump?
Flow reversal is a serious problem that can occur in piping systems with parallel pumps or in systems that pump uphill. When one or more pumps trip out of service, the loss in pressure can cause reverse flow to form based on the piping’s elevation, slope, flow resistance, and pressure differential.
What is the difference between 351W and 302?
On a 302 (or smaller c.i.d.) blocks, the distributor mount is almost flush with the top of the block (where the intake sits). A 351W block is taller. So, the distributor mount is below the block surface where the intake sits. There is also more space between the water passages and the cylinder heads.
Are 302 and 351W timing covers the same?
Registered. Yes the covers will interchange from 1 block to the other, but you have to match the timing cover to the water pump your using, either standard rotation or reverse rotation.
Are 302 and 351W water pumps the same?
302 and 351W pumps are the same EXCEPT there are 2 different rotations of each and some have different mounting bosses for accessories.
Will a 289 water pump fit a 302?
No they’re not. I think it was ~’70 when the 302 switched to a drivers side outlet. Also even the ’65~’68 289’s had different waterpumps as some had a plate on the back and others didn’t. You also need to match the pump to the timing cover as the water passage holes faced differently.
How do you measure the hub height of a water pump?
Put a flat object against the face of the water pump’s hub. Measure from the back of the water pump. You can get the correct length for the water pump with this.