442 Hydraulic Schematic ms-1422-6

Posted in 442
36
36
10
9
8
7
6
54
3
36
36
2
11
1
42
42
BUCKET
CYLINDER
ARM
CYLINDER
BOOM
CYLINDER
16
15
14
13
(PRINTED APRIL 2005)
MS-1422
HYDRAULIC/HYDROSTATIC SCHEMATIC
442 (S/N 522311001 AND ABOVE)
LOAD HOLDING VALVE
C2
2
1
V2
T
Pil
E
E
Pil
T
V2
T1
M
T
P
AUXILIARY
a
A4
B4b
a
A3
B3b
a
A2
B2b
B
A
T T
BUCKET
B
A
T T
ARM
B
A
T TTT
a
b
A
B
LS
6 SPOOL VALVE
BOOM
B1
A
LEFT TRAVEL
a
b
B
Left Side
Auxiliary
On Arm
Right Side
Auxiliary
On Arm
1 of 6
Dealer Copy -- Not for Resale
p
a
12
BOOM
SWING
BLADE
BLADE CYLINDER
FLOAT POSITION VALVE
AUXILIARY
CONTROL VALVE
BREAKER
VALVE
AUXILIARY
PILOT PRESSURE
REDUCING VALVE
TRAVEL
CONTROL
VALVE
RIGHT
TRAVEL
CONTROL
VALVE
LEFT
36
36
HYDROSTATIC SCHEMATIC
Y19Y18
Y11
Y4
A
B
P
T
S
BA
P T
T
2
SWING
A
a
bb
a A2
B2B1
A1
3 SPOOL VALVE
a
b
P
T1
M
P
T
1 3
2
T3
LEFT TRAVEL
a
b B5
A5
RIGHT TRAVEL
a
b B6
A6
T
P
1
2 2
1
P
T
45
2 of 6
Dealer Copy -- Not for Resale
SWING RELIEF PRESSURE
CONTROL VALVE
44
39
37
37
38
40
BOOM
SWING
BOOM SWING
CYLINDER
BOOM
OFFSET
CONTROL
VALVE
DOZER
BLADE
CONTROL
VALVE
JOINT
SWIVEL
SWIVEL JOINT
Y12
2
3 1
X
1
T
M
A
Under carriage
LEFT TRAVEL
CASE DRAIN
RIGHT TRAVEL
RIGHT TRAVEL
LEFT TRAVEL
BLADE - BASE END
TWO SPEED
8
7
6
5
4
3
2
1
BLADE - ROD END
T
P
1
2 2
1
P
T
T
B3A3a
b
B2
7
6
5
4
3
2
1
8
M
B
46
46
3 of 6
Dealer Copy -- Not for Resale
34
30
31
27
24
25
26
35
29
28
32
33
P
M
T
AB
C
DG
F
E
L
T
K
S
variable displacement pump
L1
B
X
MAIN FILTER
4 of 6
Dealer Copy -- Not for Resale
p
tb
a
a
b
p
t
17
18
17
JOYSTICK LOCKOUT AND
TWO SPEED VALVE
43
21
22
23
P
S
M
T
Y5Y3
S
B
S1
A
T P
S
P
T
1
2
T
P
T
P
31
2 4
LEFT JOYSTICK
S 1
S 2
SWING MOTOR
45
45
X
Y
5 of 6
Dealer Copy -- Not for Resale
37
38
40
MS-1422 (3-21-05)
TRAVEL
MOTOR
40
41
TRAVEL
MOTOR
41
37
39
19
20
SWING BRAKE
RELEASE VALVE
JOINT
Y12
S
P
Z
R
2
3
1
8
1
2
3
4
5
6
7
SWIVEL
A B
A B
X
1
T
A
M
BLADE CYLINDER
T
P
T
P
13
2 4
RIGHT JOYSTICK
S
1
S 2
P
R
A
SWING MOTOR
T
M
B
46
46
6 of 6
Dealer Copy -- Not for Resale