INTRODUCTION 999 SERVICE/MAINTENANCE MANUAL
1-56
Published 05-16-17, Control # 233-03
Boom Hinge Pins
See Figures 1-40 and 1-41
Power is available to setup remote control when cable is
plugged into valve junction box on left side of rotating frame
and engine is running. Pressing power button (3) completes
power supply circuit to setup remote control switches.
When power button is pressed and boom hinge pins switch
(2) is placed in engage position and held, the PC sends an
output signal to boom hinge pins cylinder engage hydraulic
solenoid HS-5. When HS-5 is enabled, the PC sends a
negative output voltage to rear drum pump EDC (13) that tilts
rear drum pump swashplate to stroke pump in the low-
pressure side direction.
15
HS
HS
14
B
A
EDC
FIGURE 1-40
999CSM1-139
87F
8D8
WB-10
WB-09
SELECT
CONFIRM
CRANE MODE
8T
0
0
8
WB-26
WB-33DOWN SCROLL
UP SCROLL
WA-24
K1
F4
F8
PRESSURE TRANSDUCER
BOOM HOIST
SYSTEM FAULT
BUZZER
25A
25
OPERATING LIMIT
BEEPER
5A
5A
+
_
ENGINE
10A
5D
5A
F1
STOP
STOP
3
RUN
START
7
MS1
K1
5DA
8
8P1
50 AMP
CB7
SEAT SWITCH
WB-34
F12
3A
REGULATED 10V DC OUTPUT
RAISE
OFF
LOWER
BOOM HOIST HANDLE
WA-05
WD-18
WD-19
DIGITAL DISPLAY
BOOM HOIST
WC-14
BOOM HOIST
WD-37
BOOM HOIST PAWL OUT
WD-10
WC-09
WE-29
BOOM HOIST
MOTOR CONTROL
PUMP CONTROL
WD-29
ROTATION INDICATOR
BOOM HOIST
BOOM HOIST PAWL IN
WD-36
DRUM BRAKE
BOOM HOIST
SPEED
ENCODER
F
A
B
D
DRUM SHAFT
WD-05
WD-06
WA-35
SENSOR
MAST ANGLE
WA-21
PRESSURE TRANSDUCER
ACCESSORY
PRESSURE SWITCH
WB-36
ACCESSORY
3
2
WC-06
REAR DRUM
B
A
EDC
3
13
PUMP CONTROL
WD-25
REAR DRUM
MOTOR CONTROL
PCP
RD
WD-34
HS
24
REAR DRUM PAWL OUT
25
HS
REAR DRUM PAWL IN
WD-35
WC-36
HS
5
6
HS
BOOM HINGE
WC-37
GANTRY RAISE
GANTRY LOWER
POWER
BOOM HINGE
PINS RETRACT
COUNTERWEIGHT
PINS DISENGAGED
BOOM HINGE
PINS ENGAGED
WB-28
WB-31
WB-32
WB-27
WB-30
PROGRAMMABLE
CONTROLLER
WB-06
WB-11MAST LOWER
MAST RAISE
PCP
BH
PIN ENGAGE
3
3
BOOM HINGE
PIN DISENGAGE
13
HS
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