20 –   4 Repair Manual  RRE140/160/180/200/250  © BT
Hydraulics schematics
Hydraulics schematics
T-code Valid from serial number Date Publication No.
815, 816 6051502 2008-08-21 261828-040
20.2.2 List of symbols
Symbol Description Symbol Description
Single-acting cylinder Double-acting cylinder
Shuttle valve Pressure sensor, analog
Choke Shut-off valve for emer-
gency lowering
Proportional valve, electro-
magnetically controlled
Pressure compensation 
valve
Shunt valve Pressure limiting valve
Flow control valve Priority flow valve
Counter balance valve 
(above
 centre valve)
Directional valve 4/3
Directional valve 6/3 Proportional valve 4/3
Electric motor and pump Filter
Tank Non-return valve
Counter balance valve Directional valve 6/2