Hyundai HL955 Manual page 464

2. HYDRAULIC CIRCUIT (HL955, HL955XTD) 2. HYDRAULIC CIRCUIT (HL955, HL955XTD)
17
LH RH
20
21
22
8
Control unit
CL CR
19
ELECTRONICS
2 4
1 3
EF P LS T
L R
18
P T
36
38
S
P
37
T
M
P2
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
14 Suttle valve
9
P
3
LS
Pst
T
BUCKET
AUX2
11
8
Control unit
(Electro-Hydraulic & Joysick steering)
L
EH18 EH20
EH17
10
R
4 1 6(4)
Ps
Ts
a3 b3 a1 b1 a2 b2
7 7 13
S1
13'
X2
X1
X3
14
1
X1 X2
23
PS
B1 B2
S1 L2 L1 S2 L4 L3
16
LH
a1 a2
A1 B1
b1
BOOM
Joystick
11'
EH19 EH22 EH21
T
P
3(2) 5(3) 2(1)
( ) : 2 Spool
To MCV
A1
26
P1
T
PS
29
31
32 33
34
30
15 Boom cylinder
16 Bucket cylinder
17 Steering cylinder
18 Steering unit
19 Steering valve (EHPS)
20 Joystick steering (opt)
21 Accumulator
22 Orifice
23 Pressure sensor
24 Brake valve
25 Pressure switch
26 Cut off valve
27 Accumulator
28 Accumulator
6-2
15
23
RH
23
a3
A3 B3
A2 B2
b2 b3
40
Sp. T
39
B
A
P1
T1
P2
T2
27 27
24
28
29
S1 B1 B2 S2 S3
PS
G1
Parking
P
B3
29
G2
PP T1 T2
6
2
P
B T
S1 L
29 Pressure sensor
30 Hydraulic tank
31 Air breather
32 Return filter
33 By pass valve
34 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)
12
B.D/F AUX
B.U B.I DUMP
T P
3 4
1 2 1.1
2.1
a2 b2 b2
B/Down B/up Aux down Aux up
b1 a1
To MCV
B/in Dump
FRONT
A1
25
AXLE
A2
REAR
41
2 4
T/M 42
3 1
5
4
D
B
A
A
B
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