Linde H30D - Page 265

Circuit diagrams 7
Hydraulic circuit diagram
A Auxiliary hydraulics with duplex or triplex
1 Left hose pulley (double auxiliary hydraulics)
2 Right hose pulley (single auxiliary hy-
draulics)
B Working hydraulics
3 Tilt cylinders
4 Standard lift mast BR 188
5 Auxiliary hydraulics connection 2
6 Auxiliary hydraulics connection 1
7 Solenoid valve
8 Tilt brake valve
9 Load holding valve
10 Non-return valve
11 Pressure relief valve 1 (with H 25 stan-
dard/duplex/triplex 200
+5
bar, with H 30
standard/duplex/triplex 225
+5
bar, with H 35
standard/duplex/triplex 245
+5
bar)
12 2/2 directional control valve (pressure
governor)
13 Release valve (working hydraulics)
14 Directional control valve - lift/lower
15 Directional control valve - tilt
16 Pressure relief valve 2
17 Directional control valve - auxiliary hy-
draulics 1
18 Directional control valve - auxiliary hy-
draulics 2
C Depressurisation circuit (special equipment)
19 Control valve
20 Accumulator
21 Non-return valve
D Linde Truck Control
22 Working hydraulics central lever
23 Auxiliary hydraulics central lever 1+2
E Internal combustion engine n
= 1000 to 2800 rpm
F Engine speed regulator
G Hydraulic variable pump assembly consisting of:
24 Hydraulic variable pump HPV 75-02
25 Release valve (traction hydraulics)
26 Set piston A→forwards B→backwards
27 Non-return valve 1 bar
28 Sensor (hydraulic oil temperature)
29 4/2 directional control valve
30 Pilot valve
31 Feed pressure valve 19
+0.5
bar
32 Brake valve (main control valve)
33 Brake valve (servo valve)
34 Purge valve 13 bar
35 Combined feed maximum valve 435
+20
bar
36 Choke plunger (towing unit)
37 Shuttle valve
38 Servo piston Y→forwards Z→backwards
39 2/2 directional control valve
40 Proportional valve (direction of travel)
H Tandem pump
41 3/3 directional control valve (priority valve)
42 Gear pump 14 cm
3
43 Gear pump 23 cm
3
I Working hydraulics pressure
filter / microfilter
K Steering control valve with:
44 Suction valve
45 Hose safety valve (H 25, H 30 = 180
+20
bar,
H 35 = 205
+20
bar)
46 Servostat
47 Maximum valve (H 25, H 30 = 120
+5
bar,
H 35 = 150
+5
bar)
L Steering cylinder
M Brake air valve
48 Towing unit
49 Pedal group
50 3/2 directional control val
ve
51 Pump for venting brake
52 Non-return valve
53 Pressure relief valve
54 2/2 directional control valv
e
N Pressure filter (feed pressure) / microfilter
O Fan drive
55 Solenoid valve
56 Hydraulic motor 9 cm
3
P Radiator
R Drive axle AH 35-03 consisting of:
57 Multi-disc brake (brake air min. 16 bar)
58 Hydraulic fixed-displacement motor
HMF 550R
S Oil tank consisting of:
59 Breather with suction and counter-balance
valve 0.35±0.15 bar
60 Suction filter with by-pass valve 0.25 bar
Operating Instructions – 393 807 1001 EN – 08/2008 255