Hydraulic System Testing; Hydraulic Testing - JLG sky trak mmv Service Manual

Hydraulic System
9.7

HYDRAULIC SYSTEM TESTING

9.7.1

Hydraulic Testing

OPERATOR'S
CAB
P
A
BRAKE
VALVE
P
A
T
7
R P
L T
POWER
STEERING
UNIT
JOYSTICK
1 2
P
T 4 3
8
G1
5a
STABILIZER
CYLINDER
9.10
FRONT AXLE
STEER
CYLINDER
7
EXTEND/
RETRACT
CYLINDER
E R
LIFT/LOWER
CYLINDER
L R
RIGHT
LEFT
SLAVE
R R
SLAVE
CYLINDER
CYLINDER
E E
STEER
CYLINDER
REAR AXLE
PILOT
SELECT
MANIFOLD
VALVE PLATE ASSEMBLY
ATTACHMENT TILT
CYLINDER
E R
FRAME
SWAY
CYLINDER
HYDRAULIC RESERVOIR
4a
T
P
SECONDARY
FUNCTION
MANIFOLD
PBG
PP PPG PB
6
2a
11 2
IN
FORK SIDE SHIFT
CYLINDERS
R E
FORK SIDE SHIFT
VALVE BLOCKS
R E
B1 A1 A2 B2
LS
FORK
SIDE
P
SHIFT
VALVE
T
STEER
T P
SELECT
1
B A
VALVE
1
HYDRAULIC PUMP
OIL COOLER
CF PIL
ACCUMULATOR
CHARGE VALVE
P
5
4
ACCUMULATORS
UNLOADER
VALVE
6a
3
OUT
2b
MAIN
2
CONTROL
VALVE
Model MMV Rev. 12/04
R E
R E
3a
EF ACF ACR LS
9
LSG
P1 SW DRAIN
10
P
S
PARK BRAKE
RELEASE
HAND PUMP
MM2401