Service Manual

Properties Of Liquids
A liquid has no shape, it always assumes the
shape of its container.
Unlike air, liquids compress only slightly under
pressure.
A force applied to a contained liquid will exert
equal pressure in all directions within the
container.
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Force Magnification
To gain a mechanical advantage, the size of the
ends of the container can be varied.
Example:: The pump has an area of 1 square
inch. The cylinder has an area of
10 square
inches.
If 10 pounds of force is applied to the
pump,
100 pounds of force is exerted on the
cylinder.
If the amount of work put into the system equals
the amount of work out
of the system [I00%
efficient], the pump will travel 10 times farther
than the cylinder.
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Building A Basic Circuit
Let’s put together a simple circuit using some
basic hydraulic components. We will start out
with a simple pump and cylinder connected by a
line.
As you can see, there are some flaws in this
design. There is not extra oil
so that the pump
can continue raising the cylinder after the first
stroke.
Also, when the pump handle is raised,
the cylinder drops.
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Productivity Series