4-001
HYDRAULIC SYSTEMS
1. SYSTEM CIRCUIT DIAGRAM
1-1. Graphic Symbols for Hydraulic Circuits
Basic Symbols
DESCRIPTION
SYMBOL
Lines:
Main working
Pilot control
Drain or bleed
Lines, joining
Not connected
Component outline
Arrow indicates direction
of flow.
Line with fixed restriction
(orifice).
Test port, pressure
measurement.
Temperature measure-
ment gauge
Pressure measurement
gauge
Reservoir (vented)
Filter or strainer
Heat exchanger, lines in-
dicate flow of coolant.
Quick disconnect:
Connected with mechan-
ically opened checks.
Disconnected.
Sloping arrow through a
symbol at 45° indicates
that a component can be
adjusted or varied.
Pump, Motors and Cylinders
DESCRIPTION
SYMBOL
Hydraulic pumps:
Fixed displacement
Unidirectional
Bidirectional
Variable displacement
Unidirectional
Bidirectional
Variable displace-
ment pressure com-
pensated
Unidirectional
Hydraulic Motor:
Unidirectional
Bidirectional
Double acting hydraulic
cylinder
Differential cylinder
Electric motor
Summary of Contents for SW880-1
Page 1: ...SW880 1 990 1 SHOP MANUAL 3498 6568A 0 ...
Page 2: ......
Page 4: ......
Page 14: ......
Page 15: ...SAFETY ...
Page 16: ......
Page 24: ......
Page 25: ...SPECIFICATIONS ...
Page 26: ......
Page 27: ......
Page 31: ......
Page 39: ...ENGINE AND CONTROLS ...
Page 40: ......
Page 46: ......
Page 47: ...HYDRAULIC SYSTEMS ...
Page 48: ......
Page 49: ......
Page 52: ......
Page 54: ......
Page 56: ......
Page 58: ......
Page 59: ......
Page 68: ......
Page 70: ......
Page 72: ......
Page 76: ......
Page 78: ......
Page 82: ......
Page 83: ...ELECTRICAL SYSTEM ...
Page 84: ......
Page 88: ......
Page 90: ......
Page 92: ......
Page 94: ......
Page 125: ...VIBRATORY DRUM ...
Page 126: ......
Page 136: ......
Page 171: ...BRAKE ...
Page 172: ......
Page 175: ...OPERATOR STATION ...
Page 176: ......
Page 179: ...WATER SPRAY SYSTEM ...
Page 180: ......
Page 182: ......
Page 183: ...INSPECTION AND ADJUSTMENT ...
Page 184: ......
Page 209: ...TROUBLESHOOTING ...
Page 210: ......
Page 427: ......