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6-2
35
37
36
18
17
31
30
32
33
39
40
1
14
13
8
20
34
7
7
38
23
RH
LH
CL
CR
L
EF
R
P
LS
T
Ps
Ts
ELECTRONICS
1
4
A
B
T
Sp.
T
A1
P1
S
P
P2
M
T
X1
X2
X3
S1
B2
L3
L4
B1
L1
L2
S1
S2
X1
X2
PS
P
T
L
R
PS
M
2
3
19
21
2
4
5
A
B
P
T
A
B
D
L
S1
B
A1
A2
25
24
42
41
FRONT
REAR
P1
T1
P2
T2
1
4
3
2
AXLE
6
29
28
27
26
27
29
29
Parking
T2
P
B3
S3
T1
PP
S2
B2
B1
S1
G1
G2
PS
PS
PS
T/M
PS
AUX2
BUCKET
BOOM
Joystick
4
1
EH20
EH19
EH22
EH21
P
T
6(4)
3(2)
5(3)
2(1)
( ) : 2 Spool
EH18
EH17
10
8
11
11'
To MCV
a3 b3 a1 b1 a2 b2
9
16
PS
PS
P
LS
Pst
T
b1
b2
b3
a1
a2
a3
A1
B1
A2
B2
A3
B3
Dump
Rollback
Down
Floating
Up
Bucket
Boom
Aux.
LH
RH
15
23
23
3
Control unit
(Electro-Hydraulic & Joysick steering)
Control unit
22
13'
12
B.D/F
B.U
B.I
DUMP
1
3
4
2
P
T
1.1
2.1
AUX
B/Down
a2
b2
b1
B/up
B/in
a1
Dump
b2
Aux down
b2
Aux up
To MCV
2. HYDRAULIC CIRCUIT (HL955, HL955XTD)
2. HYDRAULIC CIRCUIT (HL955, HL955XTD)
757F6WE01
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
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
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)
Summary of Contents for HL955
Page 557: ...7 6 MEMORANDUM MEMORANDUM ...