Safety
What should never be used to look for a leak?
What is your Hand.
What is Manufacturers Specifications.
Common types of piston pumps are.
What is Axial and Radial.
What is the most common seal in Hydraulic systems?
What is an O ring.
Three results of too high viscosity oil in a pump are.
What is Heat, loss of energy, cavitation.
What must be done before servicing any kind of Hydraulic system?
What is turn off, relief the pressure, and lock out the system controls.
How is flow rating measured?
What is Litres per minute, or Gallons per minute.
Name three types of positive displacement pumps.
What is Vane, Piston, and Gear.
How many positions can a directional control valve be in at once.
What is only one position.
What size is a -16 hose.
What is One Inch.
What should you do in event of a "Lethal Strike."
Power off the system and immediately dial 9-1-1.
What is the ISO Grade for 20w oil?
What is ISO 68.
In a positive displacement pump, which port is larger in diameter, the inlet port, or outlet port?
What is the inlet port.
What is the difference between a single and double acting cylinder?
What is double acting cylinders are powered in both directions.
How are hydraulic seals identified?
What is by their shape and design.
Why are relief valves used?
What is to protect from excessive pressure from overloads or stalling.
What are the two classifications of Hydraulic Systems?
Hydrodynamic and Hydrostatic.
Pumps are rated in three different ways, what are they?
Displacement, flow rating, pressure rating.
Explain an Actuator's purpose.
What is to convert hydraulic power into mechanical power
Define a Baffle in a Hydraulic system.
What is a separator between the outlet line and return line.
What happens with a Hydraulic Hose that is too small for it's application?
It will lose pressure and have high heat.
Define Pascal's Law.
What is "Pressure exerted anywhere in a confined incompressible fluid is transmitted equally in all directions.
What type of force is generated by a non-positive displacement pump?
What is centrifugal force.
What is the defining characteristic of a closed center Hydraulic system.
They are equipped with a directional control valve that blocks pump flow.
Name all three types of diagrams used in Hydraulics.
What are Schematics, Pictorals, and Cut-a-ways.