Hydraulic Schematic (Model 3219) - Skyjack SJ 3215 Service Manual

A B
MB9
PROPORTIONAL
MANIFOLD
BLOCK
2H-59
PRESSURE-
COMPENSATED
PROPORTIONAL
VALVE
HYDRAULIC
QUICK
DISCONNECT
F1
RETURN
FILTER
P1
M
PUMP
HYDRAULIC TANK
SKYJACK, Page 18

3.12 Hydraulic Schematic (Model 3219)

C
M1
RIGHT DRIVE
MOTOR
V2
FREE-WHEELING
VALVE
O7
M2 DRIVE
LEFT DRIVE
ORIFICE
MOTOR
.024 DIA.
PORT
3H-17
PLUGGED
CB1
BRAKE
COUNTERBALANCE
VALVE
VALVE
R1
SYSTEM
RELIEF
VALVE
O4
BRAKE
ORIFICE
.051 DIA.
C4 BRAKE
CYLINDER
D E
C3
STEER
CYLINDER
L
MB2
FRONT AXLE
O5
MANIFOLD
STEERING
BLOCK
ORIFICE
.040 DIA.
4H-16 4H-23
FORWARD RIGHT
DRIVE STEER
VALVE VALVE
P B P A
A B
T T
4H-15
4H-24
REVERSE
LEFT
DRIVE
STEER
VALVE
VALVE
O3
MB3
CUSHION
CUSHION
ORIFICE
2H-25
VALVE
CUSHION .040 DIA.
BLOCK
VALVE
F G
PT1
PRESSURE
OVERLOAD
TRANSDUCER
OPTION
R
O5
STEERING
ORIFICE
.040 DIA.
MB4
HOLDING
VALVE
MANIFOLD
BLOCK
2H-13 (ANSI/CSA)
2H-13B (CE)
3H-14
LOWERING
LIFT
VALVE
VALVE
R2
O2
LIFT
LOWERING
RELIEF
ORIFICE
VALVE
.063 DIA. (3219 ONLY)
MB1
MAIN MANIFOLD BLOCK
V1
EMERGENCY
LOWERING
VALVE
H
V
C2
LIFT
CYLINDER
O6 EMER. LOWERING
ORFICE .067 DIA.
2H-13-1 (ANSI/CSA)
2H-13B-1 (CE)
W
HOLDING
VALVE
X
Y
MB5
LOWERING
VALVE
BLOCK
Z
M138023AA
SJIII Compact Series
143909