Hyundai HL955 Manual page 465

HYDRAULIC CIRCUIT (HL955, HL955XTD, DIRECT STEERING, OPT) HYDRAULIC CIRCUIT (HL955, HL955XTD, DIRECT STEERING, OPT)
BUCKET
AUX1 BOOM
11
8
Control Unit / Electro Hydraulic
10
EH18
EH17 EH20 EH19 EH22 EH21
x
3 3spool
4 1 6 5 2
2spool
2 3
4 1
a3
a1
b3 b1 a2
b2
To
Aux Bucket
Aux Bucket Boom
Boom
MCV
Down Dump
Up In Up
Down
17
LH RH
21 21
22 22
18
19
36
38 23
S
P
37
M T
P1
B1
35
M
1 Main pump
2 Fan & brake pump
3 Main control valve
4 Fan motor
5 Directional valve
6 Oil cooler
7 Check valve
8 Controller (opt)
9 Boom lowering valve
10 Remote control block(EH)
11 FNR remote control lever
12 Remote control valve(HYD)
13 Safety valve
11
9
2/3spool
T
P
P
3
LS
Pst
T
4
7
7
13
14
S1
X1 X2
X3
1
X1 X2
PS
B2
S2
S1 L2 L1 L4 L3
14 Suttle valve
15 Boom cylinder
16 Bucket cylinder
17 Steering cylinder
18 Steering unit
19 Steering valve (EHPS)
21 Accumulator
22 Orifice
23 Pressure sensor
24 Brake valve
25 Pressure switch
26 Cut off valve
27,28 Accumulator
16
LH
a2
a1
A1 B1
Bucket
b1
B.D/F B.U CRAWD DUMP AUX
T
P
1 3 4 2
1.1 2.1
EH
EH
A1
P1
T
29
31
32 33
34
30
6-2-1
15 T
RH
23
23
B
a3
A
A2 B2 A3 B3
Boom Aux
b2 b3
24
P1
T1
P2
T2
27 28
27
29
B1 S3 PS
S1 B2 S2
26
C5 C6
G1
PARKING
C3
C1
C4
P
B3
T/M
C2
PS
G2
29
PP T1 T2
6
2 5
P
B
T
S1
L
29 Pressure sensor
30 Hydraulic tank
31 Air breather
32 Return filter
33,34 By pass valve, Strainer
35 Pump motor (opt)
36 Check block (opt)
37 Pressure sensor (opt)
38 Check valve (opt)
39 Ride control velve (opt)
40 Accunulator (opt)
41 Quick coupler cylinder (opt)
42 Solenoid valve (opt)
40
39
Sp.
FRONT
A1
25
AXLE
A2
REAR
41
42
2 4
3
1
4
D
A
B
9556WE01