7-2
GTH-2506 GTH-3007
Part No. 57.4400.9220GT
August 2018
Section 7 • Schematics
Electrical and Hydraulic Symbols Legends
87A
85
86
30
87
-
+
B
G
D1
ALT
M3
STARTER
KS1
KEY
SWITCH
BAT
ACC
START
IGN
1
3
2
4
T
P
Electrical Schematic Symbols
Hydraulic Schematic Symbols
Engine start
Pressure switch
Orifice
Check valve
Flow regulator
Relief valve
3 position 4 way
proportional
directional valve
2 position 3 way
directional valve
3 position 4 way
solenoid valve
2 position 4 way
solenoid valve
2 position 2 way
solenoid valve
Counterbalance
valve
Joystick
Adjustable orifice
Filter
Hydraulic cylinder
Axle
Key switch
Control relay
Alternator
Circuit breaker
Fuse
Horn or Alarm
Light
Valve coil
with diode
Valve coil
Switch
Diode
Limit switch
Proximity switch
Temperature switch
Fuel level sender
Pressure switch
Battery