Service Training
Section 2.7
Page 6
2.7.5 WORKING AND STEERING HYDRAULICS CIRCUIT DIAGRAM
A WORKING HYDRAULICS
1 Hydraulic oil reservoir.
2 Suction filter (15 µm) 0.25 bar
3 Breather filter
4 Hydraulic pump 22 cu cm/rev
5 Electric motor
6 Control valve
7 5/3 way valve for double auxiliary hydraulics
8 6/3 way valve for single auxiliary hydraulics
9 6/3 way valve for tilting
10 6/3 way valve for lifting
11 Restrictor
12 Make-up valve
13 Maximum pressure valve
14 Pressure holding valve
15 Tilt jack
16 Brake lower valve
17 Pipe safety valve
18-1 Lift jack, standard mast
18-2 Lift jack, duplex mast
18-3 Lift jack, triplex mast
B Steering hydraulics
19 Steering control valve
20 7/3 way valve
21 Non-return valve
22 Shock valve
23 Make-up valve
24 Restrictor
25 3/3 way valve
26 Maximum pressure valve
27 Power steering control
28 Steering jack
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