Travel Detent Selector - Manitowoc 999 Service And Maintenance Manual

999 SERVICE/MAINTENANCE MANUAL
999CSM1-110
+
F15
5A
5D
10A
CB7
K1
8
50 AMP
OFF
REVERSE
FORWARD
3 1
REVERSE
F3
8 8A
12 3
5A
F4
8 8D
5A
F8
8T
8
5A
When travel speed switch is in high position, travel motors
remain in minimum displacement (low torque, high-speed)
position when starting. When crawler begins to move, a high
system pressure shifts the PCOR spool placing travel motor
in maximum displacement (high torque, low speed) position
for breakaway torque. Travel motors shift back to minimum
displacement automatically if engine speed is above 1500
rpm and system pressure is below 3,915 psi (270 bar). If
engine is below 1500 rpm, 2-speed travel solenoid HS-12 is
enabled even if travel speed switch in the high position. Two-
speed travel solenoid HS-12 is disabled, shifting valve and
removing pilot charge pressure to end of P/C valve, allowing
motor to operate in PCOR mode.

Travel Detent Selector

Travel detent selector (12) on right travel handle locks-in any
travel command. This allows crawler track to operate in
Manitowoc
ENGINE
RUN
STOP
STOP
5DA
F12
REGULATED 10V DC OUTPUT
3A
LEFT TRAVEL HANDLE
OFF
FORWARD
RIGHT TRAVEL HANDLE
3 2
LEFT TRAVEL PEDAL
RIGHT TRAVEL PEDAL
TRAVEL DETENT
HIGH SPEED TRAVEL
13 3
DIGITAL DISPLAY
UP SCROLL
DOWN SCROLL
CRANE MODE
CONFIRM
SELECT
SEAT SWITCH
RIGHT TRAVEL
PRESSURE TRANSDUCER
LEFT TRAVEL
PRESSURE TRANSDUCER
Published 05-16-17, Control # 233-03
START
3
7
8P1
0
WA-01
25
WA-07
WA-06
25A
WA-13
WC-23
WA-12
PROGRAMMABLE
WC-16
CONTROLLER
WB-01
WB-35
WC-27
WD-19
WD-18
WD-31
WB-26
WB-33
WC-10
WB-09
WD-11
WB-10
WB-34
7 3
WA-20
WA-29
either direction at a selected speed without manually moving
travel handles. When moving at desired speed and direction,
lift up travel detent selector on right travel handle dome. The
PC locks-in the travel information. When travel handle is
moved back to neutral position, travel speed and direction is
maintained.
Lifting travel detent selector again or moving either travel
handle or pedal in opposite direction from neutral, opens
travel detent circuit and returns control of travel system to the
operator.
Travel detent selector also serves as a brake function. Lift
the travel detent selector when travel handles are in neutral
position. This locks-in off condition with brakes spring-
applied and disables travel handles until travel detent
selector is released.
INTRODUCTION
_
K1
0
MS1
SYSTEM FAULT
BUZZER
OPERATING LIMIT
BEEPER
LEFT TRAVEL PUMP CONTROL
B A
EDC
RIGHT TRAVEL PUMP CONTROL
B A
EDC
SWING/TRAVEL ALARM
HIGH SPEED TRAVEL
HS
12
11 3
TRAVEL BRAKE
HS
10
FIGURE 1-11
1
5 3
3 4
1-19