New Holland PL6011, Service Manual

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Hydraulic systems - Hydraulic systems
Cylinders
A cylinder is a simple rectangle (A) representing the bar-
rel. The piston and rod are represented by a tee (B) , in-
serted into the rectangle. The symbol can be drawn in any
position.
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If the cylinder is single-acting (A) , there is only one port
shown on the end of the cylinder that receives pressurized
fluid. The opposite end of the cylinder is left open. Both
ends are closed on a double-acting cylinder
(B) , and two
ports are shown.
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A double rod end cylinder has a rod extending from each
end of the rectangle.
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Some cylinders have cushions built into them. The cush-
ion slows the movement of the piston as it nears the end of
its stroke. Cylinder cushions are shown as a smaller rec-
tangle
(A) on the piston. If the cushion has an adjustable
orifice, a slanted arrow is drawn at 45 degrees (B) across
the symbol.
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