1
2
3
4
5
6
7
8
A
B
C
D
E
F
G
H
I
J
K
L
M
N
October 2013
Section 6 • Schematics
6 - 146
S-40 • S-45
Part No. 102521
4WD Oscillating Hydraulic Schematic
S-40 Models
(before serial number 7569)
7
9
B
C
A
A
C
C
F
F
E
E
D
D
7
7
2
7
2
x
x
x
x
x
x
REAR
RIGHT
REAR
LEFT
M1
T1
T
M2
LEFT
FRONT
M3
50%
.070
50%
M7
M5
67%
210 psi
14.5 bar
.070
33%
TEST
B
A
6
8
3
1
M4
50%
50%
FRONT
RIGHT
M8
M6
2
5
4
E
249.9 bar
3625 psi
3 psi
3 psi
0.2 bar
0.2 bar
TEST
A
B
TEST
315 psi
21.7 bar
50 psi
3.4 bar
T2
CP
25 psi
1.7 bar
BRAKE
LS TEST
T1
PRESS
PL2
PL1
PR2
.030
T2
PR1
TANK
SW2
V1
SW1
1950 psi
134.4 bar
V2
S1
RET
ST2
ST1
PTEST
AUX
EXT
2600 psi
179.3 bar
1.7
M
2.0 gpm
7.6 L/min
FLB
FLR
2A
2B
1
3
8A
6A
6B
8B
2C
0.6 gpm
2.27 L/min
0.38 L/min
0.1 gpm
5
4
FRB
FRR
950 psi
65.5 bar
A
B
OUT
IN
TEST
.052
4.5 gpm
17 L/min
AUX
T2
TANK
PRESS
T1
6C
8C
RESERVOIR
HYDRAULIC ROTARY COUPLER
BRAKE MANIFOLD
DRIVE PUMP
PUMP
FUNCTION
RETURN
FILTER
MANIFOLD
TRACTION
PLATFORM
SLAVE
MASTER
ROTATE
3 gpm
11.4 L/min
TURNTABLE
ROTATE
7.6 L/min
2 gpm
EXTEND RETRACT CYL
4 gpm
15.1 L/min
FUNCTION
MANIFOLD
PUMP
AUXILIARY
MEDIUM
PRESSURE
FILTER
CYLINDERS
PLATFORM LEVEL
PRIMARY LIFT
CYLINDER
STEERING
RIGHT
LEFT
OSCILLATE VALVE
OSCILLATE CYLINDERS
LEFT
RIGHT
2400 psi
165.5 bar
OPTIONAL
MANIFOLD
GENERATOR
OPTIONAL
GENERATOR
FUNCTION
MANIFOLD
TO HYD ROTARY COUPLER
FUNCTION
PUMP
HYDRAULIC
COOLER
OPTION
G
G
D
E
C
B
A
F
3300 PSI
3:1
3:1
3500 PSI
COUNTERBALANCE VALVE
3:1
3:1
3:1
RATIO
1000 PSI
3000 PSI
2000 PSI
PRESS
5:1
3500 PSI
G
1.5:1
3000 PSI
DB
.025
DA
HF
HI
HA
HD
HH
HE
HC
HG
CA
CB
BH
AB
BF
AA
0.6 gpm
2 L/min
BG
BE
AD
BA
AE
AC
BD
AJ
BI
AZ
AG
BB
AF
AM
BG
AR
AU
AV
AL
AP
AO
AS
AN
AT
AQ
P2
2200 psi
151.7 bar
P1
AI
AW
AH
AK
AY
AX
Note: 'alpha' callouts refer to
components shown in the
manifold illustrations.
Refer to the Repair Section.
Property of American Airlines