Reference
Only
Manitowoc
Published 05-16-17, Control # 233-03
1-63
999 SERVICE/MAINTENANCE MANUAL
INTRODUCTION
1
Counterweight Pins
See Figures
Counterweight pin switch (2) is spring-returned to engage
position. In this position, counterweight pins are extended.
Fluid flows through counterweight pins engage solenoid HS-
7 to piston end of pin cylinder (3). Cylinder pins are engaged
while fluid from rod end of cylinder flows to tank.
When setup remote power push button (3) is pressed and
counterweight pins switch, is held in the disengage position,
counterweight pins disengage solenoid HS-7 is enabled, to
retract the pins. Fluid from rear drum low-pressure
accessory line flows through the solenoid to rod end of
counterweight pin cylinders. Cylinders then retract to move
pins out of engagement while fluid from piston end of
cylinder flows to tank. When counterweight pins switch is
released, it returns to the engage position.
FIGURE 1-45
15
HS
HS
14
B
A
EDC
999CSM1-144
87F
8D
8
WB-10
WB-09
SELECT
CONFIRM
CRANE MODE
8T
0
0
8
WB-26
WB-33
DOWN 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-26
HS
7
COUNTERWEIGHT
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-11
MAST LOWER
MAST RAISE
PCP
BH
PINS DISENGAGE
13
HS
Summary of Contents for 999
Page 1: ...R e f e r e n c e O n l y Service Maintenance Manual Manitowoc 999 ...
Page 2: ...R e f e r e n c e O n l y ...
Page 4: ...R e f e r e n c e O n l y THE ORIGINAL LANGUAGE OF THIS PUBLICATION IS ENGLISH ...
Page 297: ...R e f e r e n c e O n l y ...
Page 298: ...R e f e r e n c e O n l y ...