30 - 9
Component Key - Manual machines
from serial no. 677001 to 677999
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 Brake Valve
2 Main Loader Valve Block
2A Lift Spool
2B Crowd Spool
2C Auxiliary Spool
2D Main Relief Valve (MRV)
2E Anti-cavitation Valve
2F Auxiliary Relief Valve (ARV)
2G Auxiliary Relief Valve (ARV)
2H Auxiliary Relief Valve (ARV)
2J Attachment Auxiliary Relief Valves (if required)
2X Pressure Test Points
3 One-way Restrictor
4 Lift Ram
5 Compensating Ram
6 Crowd Ram
7 Filter By-pass and Oil Cooler Relief Valve
8 Check Valve (2 bar)
Optional High-flow Circuit
C2 Cooler
F2 High-flow Filter
S2 High-flow Pump Suction Strainer
9 High-flow Pump
10 High-flow Control Valve
11 High-flow Valve
11A High-flow Circuit Relief Valve
12 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 - 9
Issue 3*
Schematic Hydraulic Circuit
Run in Tandem
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