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Section E
3 - 12
Introduction to Hydraulic Schematic
Symbols (cont'd)
Energy Transmissions and Conditioning
9803/3280
Basic System Operation
Working line, return or feed
Pilot control
Drain lines
Flexible pipe
Line junction
Crossing lines
Air bleed
Line plugged, also
pressure test point
Line plugged with
take off line
Quick release
couplings - connected
A189710
Quick release
couplings - disconnected
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Hydraulics
Section E
Reservoir - return line
above fluid level
Reservoir - return line
below fluid level
Header tank
Pressure sealed tank
Accumulator
Filter or strainer
Water trap
Cooler - with no
indication of coolant flow
Cooler - indicating
direction of coolant flow
Heater
A189720
3 - 12
Issue 1
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