30 - 5
Component Key - Servo machines from serial no. 677001
to 677999
Single Drive Lever Control
Standard Circuit
C1 Cooler (see note 2)
F1 Filter
P1 Main Pump
P2 Main Pump
P3 Auxiliary Gear Pump
M1 Left Hand Drive Motor
M2 Right Hand Drive Motor
S1 Suction Strainer
T Tank
1 Loader Joystick
2 Main Loader Valve Block
2A Auxiliary Spool
2B Lift Spool
2C Crowd Spool
2D Main Relief Valve (MRV)
2E Attachment Auxiliary Relief Valve (if required)
2F Attachment Auxiliary Relief Valve (if required)
2G Auxiliary Relief Valve (ARV)
2H Auxiliary Relief Valve (ARV)
2J Auxiliary Relief Valve (ARV)
2K One-way Restrictor
2X Pressure Test Points
3 Drive Control Joystick
4 Check Valve (8 bar)
5 Lift Ram
5A Manually Operated Dump Valve
6 Compensating Ram
7 Crowd Ram
8 Pressure Reducing Solenoid Valve
9 Check Valve (2 bar)
10 Filter By-pass and Oil Cooler Relief Valve
Optional High-flow Circuit
C2 Cooler
F2 High-flow Filter
S2 High-flow Pump Suction Strainer
11 High-flow Pump
12 High-flow Valve
12A High-flow Circuit Relief Valve
13 High-flow Control Valve
14 Attachment Motor
Note 1: Neutral Circuit shown in bold line
Note 2: On High-flow machines, cooler C1 is not fitted and
the line is blanked off at the main pump.
Section E
Hydraulics
9803/8500
Section E
30 - 5
Issue 2*
Schematic Hydraulic Circuit
Run in Tandem
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