Genie GTH-644 - And GTH-844 with Single Joystick; A Hydraulic Schematic; Hydraulic Schematic GTH-644, GTH-842 and GTH-844 with Single Joystick

REV B
Section 6 • Schematics
June 2007
6 - 20 GTH-636 • GTH-644 • GTH-842 • GTH-844 • GTH-1048 • GTH-1056 Part No. 97487
Hydraulic Schematic -
GTH-644, GTH-842 and GTH-844 with Single Joystick
P1-1971
P1-1962
P1-1940
TILT
CYLINDER
EXTENSION
CYLINDER
LIFT
CYLINDERS
1234
G4
G2
C
ST
R
T1
T2T3
G1
BK
G3
PR
S
(1)= 3000 psi / 207 bar
(2)= 2250 psi / 155 bar
(3)= 500 psi / 34.5 bar
(4)= 1250 psi / 86.2 bar
MAIN VALVE MANIFOLD
P1
T1
BOOM
TILT
LIFT
3650 psi
251 bar
42 3 1
PT
PT PT
AB AB
GA
GB
QA
AA AB AC
AD
QB
RA
RC
RB
CB
CA
PB
PA
MA
0.060 in
1.5 mm
0.060 in
1.5 mm
SWAY
DIRECTIONAL
VALVE
RETURN FILTER
PRESSURIZED
FILTER/BREATHER
3 psi / 0.2 bar
HYDRAULIC
TANK
PUMP CASE DRAIN
PUMP
3000 psi
207 bar
4-WAY CONTROL
(JOYSTICK)
SWAY
CYLINDERS
KA
KB
KC
KD
B P C1 C2
DA
FC
FA
FD
FB
T
S1
S2
C3
C4
TANK
HF
HG
HC
HB
HA
HE
REAR
LOCK-UP
CYLINDERS
HD
HH
STEERING
ORBITRAL
STEERING
WHEEL
FRONT
STEER CYLINDER
REAR
STEER CYLINDER
STEER SELECTOR
PT
C1 C2
PTOT=2WS
PTOC2=4WS
PTOC1=OBLIQUE
STEER LEGEND
RT LT
PAT
0.040 in
1mm
ROTATE
VALVE
SB SA
LA
ROTATE
CYLINDER
HOSE REEL
FORK ROTATE (OPTION)
REAR AXLE
BRAKE LIGHTS
PRESSURE SWITCH
NORMALLY OPEN (OPTION)
A
CLUTCH CUTOFF PRESSURE SWITCH
350 psi / 24 bar
NORMALLY CLOSED
BRAKE
ACTUATOR
LOW BRAKE PRESSURE
PRESSURE SWITCH
1000 psi / 69 bar
NORMALLY CLOSED
BRAKE
ACCUMULATOR
FRONT AXLE
PARKING BRAKE
PRESSURE SWITCH
250 psi / 17 bar
NORMALLY CLOSED
P
T
2
1
3
PARKING BRAKE
T
P
TRANSMISSION
DIFFERENTIAL
LOCK
JA
IA
2
1
3
EA
ROTATE
SPEED
CONTROL BLOCK
MANIFOLD
REAR LOCK-UP
MANIFOLD
PS4
PS7
PS6
PS5
GTH-844
MODELS
CB
CA
NA
GTH-644 • GTH-842
MODELS
BA
TA