First Flashcards
(44 cards)
Hydraulic systems convert the available power to blank power
Usable
Fluid acts as the carrier of hydraulic power through the system, but it also serves the important function of blank the hydraulic equipment
Lubricating
Before working on a system the most important requirement is
The first thing to do is to understand the operation of the basic machine or a piece of equipment on which the system is installed
What shows the general location purpose and appearance of these systems elements
Pictorial diagram
What shows both the positions of the elements in the circuit and how they operate
Cutaway diagram
So that you do not overlook an important detail and to help you reach the solution to the problem sooner what must you do
Get the overall view of the system
Valve symbols show connections, flow paths, and
Valve functions
Each major element in a hydraulic system has its blank that must be considered during installation
Own particular features
A blank should be used to connect the pump to the drive unit
Flexible coupling
Which procedures should be followed when starting a pump
?
Many people referred to blank as sandwich plates
Manifolds
When installing solenoids which of the following is not true
Clip off the solenoid leads
Inlet piping is extremely important the diameter of the pipe should not be smaller than the blank of the blank
Intake of the pump
The three principal considerations in selecting tubing are
Material, ID, and wall thickness
Lines should normally be kept as short and free of bends as possible. However, tubing should not be assembled in a straight line, a band helps eliminate what
Strain by absorbing vibration
What is a disadvantage of hose
It wears out more rapidly than either pipe or tubing
The lubricating properties of a fluid are largely dependent upon its
Viscosity
The primary function of a hydraulic fluid is to transmit efficiently the blank and blank applied at one point in the system to the point where they required mechanical action is produced
Force and energy
Before filling a system take precautionary steps to ensure the blank before installing the new fluid
Cleanliness of the system
How often you inspect, what you inspect, and what you inspect for depend on what
Type of system
Many companies find it best to completely recondition a system blank when it has run for two or more years or when it
Periodically and breakdown
When should you check and service hydraulic fluid
Every 1000 hours for contact to be sent for lab analysis
When working on hydraulic systems personal blank should never be sacrificed for production
Safety
One of the first things to do when the hydraulic system breaks down used to study the most recent history of its operation and performance the second step is to evaluate the symptoms to determine the blank of the present malfunction
Cause
