Lull 944E-42 Service Manual - Manual (Page 596)

Electrical System
9.86 Model 644E-42/944E-42 Rev. 6/04
9.8.29 Dual Joystick - Auxiliary Hydraulic Circuit & Troubleshooting
Schematic is drawn with the ignition switch in the RUN position.
AHG5 CAB GRND
STUD
F1 40
OPEN CAB
VEHICLE MAIN
F2 15
IGNITION
CONTROL
BA1A
BA3
B
BA4
C
A
B BA1A
D F4 20
FUEL
SOLENOID
TRANSMISSION
F3 15 C
4
3
2
1
12V BUSS BAR
A
B
C BA1
POWER
MALE
AND FEMALE
CONNECTOR
A
FJ1
PB1
FJ3
5
FJ4
6
FJ5
7
FJ6
8
FJ7
9
10
F8 10
DASH PANEL
H
F7 10
STABILITY
CIRCUIT
G
F F6 10
BACK-UP
ALARM/HORN
F5 20
IGNITION
POWER
E
I
F10 5
AUXILIARY
HYDRAULICS
J
AH1
FJ2
F9
OPEN
A
B
A
B AHG2
AHG1
105
AH2A
20
AUXILIARY
HYDRAULIC
SOLENOIDS
AH2B
AH2
IGNITION
RELAY
87A 87
30
86
85
IG1 BA4
BA3
RG2
RG3
10
PB2A
PB2
IG1
PB1
IGNITION
SWITCH
ACC IGN
B+
OFF
ACC
IGN
ST
To
Transmission
Control Relay
To
Neutral
Start
Relay
To
Park Brake
Switch
A
B AH A
A
B AH B
7
3
2
8 295
A
B AHG4
AUXILIARY HYDRAULIC
PRESSURE RELEASE
VALVE SOLENOID
A
B
AHG5 AHG3 AH3A
AH3B
290
AH4
AUXILIARY HYDRAULIC
PRESSURE RELEASE
SWITCH
2
3
7 8 1 CAB GRND
STUD
AH4
AH3
A
B
C
AH1
AH2
AUXILIARY
HYDRAULIC
JOYSTICK
A
B
C
AHG6
AHG6
HYD
JOYSTICK
CONNECTOR
SN 19041
& BEFORE
A
B
AH1
AH2
AUX HYD
JOYSTICK
A
B
STARTER
GND (-)
+
+
-
BATTERY 1
ENGINE
BLOCK
F1 40
OPEN CAB
VEHICLE MAIN
F2 15
IGNITION
CONTROL
BA1A
BA3
B
BA4
C
A
B BA1A
D F4 20
FUEL
SOLENOID
TRANSMISSION
F3 15 C
4
3
2
1
12V BUSS BAR
A
B
C BA1
POWER
MALE
AND FEMALE
CONNECTOR
A
FJ1
PB1
FJ3
5
FJ4
6
FJ5
7
FJ6
8
FJ7
9
10
F8 10
DASH PANEL
H
F7 10
STABILITY
CIRCUIT
G
F F6 10
BACK-UP
ALARM/HORN
F5 20
IGNITION
POWER
E
I
F10 5
AUXILIARY
HYDRAULICS
J
AH1
FJ2
F9
OPEN
A
B
A
B AHG2
AHG1
105
AH2A
20
AUXILIARY
HYDRAULIC
SOLENOIDS
AH2B
AH2
IGNITION
RELAY
87A 87
30
86
85
IG1 BA4
BA3 RG2
RG3
10
PB2A
PB2
IG1
PB1
IGNITION
SWITCH
ACC IGN
B+
OFF
ACC
IGN
ST
To
Transmission
Control Relay
To
Neutral
Start
Relay
To
Park Brake
Switch
A
B
AH A
A
B
AH B
A
B
C
AH1
AH2
AUXILIARY
HYDRAULIC
JOYSTICK
A
B
C AHG6
HYD
JOYSTICK
CONNECTOR
STARTER
GND (-)
+
+
-
BATTERY 1
ENGINE
BLOCK
AH3A
290 1 2 3 4 5 6 7 8
AH3B
AH4 295
A
B
AHG3
AH4
AHG6 AH3
MU6720
644E-42, SN 20118 & Before,
0160002519 thru 0160003108,
944E-42, SN 20123 & Before,
0160002514 thru 0160003106
644E-42, SN 0160003109 & After,
944E-42, SN 0160003107 & After
Connectors used on
early production
units only.
See page 9.48.