Manitowoc 16000 User Manual

Reference Only
Manitowoc Published 05-03-17, Control # 228-03 1-45
16000 SERVICE/MAINTENANCE MANUAL INTRODUCTION
1
flow control valve before entering the lower accessory valve.
Hydraulic fluid leaving the accessory valve is returned to the
tank.
When the jacking switch is moved back to the center
position, an input voltage is sent to the Node-1 controller.
The Node-4 controller sends a zero volt output to disable the
selected jacking cylinder proportional control solenoid HS-62
and shifts valve spool to center position. The Node-3
controller sends a variable 0 to 24 volt output to disable
accessory system proportional relief solenoid HS-68.
Rotating Bed Jacking - Lower
Move the desired jacking switch to the retract position and
hold (front right jack is shown in Figure 1-30
). An input
voltage is sent to the Node-1 controller. The Node-4
controller sends a 24 volt output to enable the selected
jacking cylinder proportional control solenoid HS-63 and
shifts the valve to the retract position. The Node-3 controller
sends a variable 0 to 24 volt output to enable the accessory
system proportional relief solenoid HS-68.
Hydraulic fluid pressure at approximately 204 bar (2,959 psi)
flows to the selected jacking cylinder(s) proportional control
valve. Hydraulic fluid exits the valve and enters the
restraining section of the flow control valve. The restraining
section controls the rate of speed for the cylinder to retract by
limiting the fluid velocity before passing through the free-flow
check valve section of the counterbalance valve. Hydraulic
fluid then flows to the rod end of the jacking cylinder.
Hydraulic pressure trapped by the cylinder counterbalance
valve at the piston end of the jacking cylinder supports the
weight and gravitational force of the rotating bed. The Node-
4 controller monitors the accessory system pressure sender
to control the jacking cylinder lowering the speed rate.
Hydraulic fluid returning to the tank from the piston end of the
jacking cylinder is blocked by the free-flow check valve.
From the counterbalance valve flow is through flow
restraining section that has a relief setting of 172 bar (2,495
psi). The counterbalance valve acts as a deceleration control
and functions with a 3:1 pilot ratio of relief pressure. This
permits the valve to open when the pressure in the piston
end of the cylinder is approximately 57 bar (827 psi).
The restraining section of the counterbalance valve opens,
controlling the fluid out of the jacking cylinder. Hydraulic fluid
then flows through the free-flow check valve section of the
flow control valve before entering the lower accessory valve.
Hydraulic fluid leaving the lower accessory valve is returned
to the tank.
When the jacking switch is moved back to the center
position, an input voltage is sent to the Node-1 controller.
The Node-4 controller sends a zero volt output to disable the
selected jacking cylinder proportional control solenoid HS-63
and shifts the valve spool to the center position. The Node-3
controller sends a variable 0 to 24 volt output to disable the
accessory system proportional relief solenoid HS-68.
Counterweight Pins
See Figure 1-31 and Figure 1-32.
During normal operation the counterweight pin solenoid is
motor spooled where both cylinder ports and the tank port
of the valve spool section are connected in the center
position. When an accessory valve spool shifts, supply flow
to the other accessory valves is limited. The accessory
system pressure sender monitors the accessory system
pressure.
The counterweight pin switch is spring-returned to the
engage position. When the counterweight pin switch is
moved to the disengage position and held, an input voltage
is sent to the Node-1 controller. The Node-4 controller sends
a 24 volt output to enable the counterweight proportional
control solenoid HS-58 and shifts the valve to the disengage
position. The Node-3 controller sends a variable 0 to 24 volt
output to enable the accessory system proportional relief
solenoid HS-68.
FIGURE 1-30
Left
Front
Pressure
Sender
Accessory
Pump
Crane Level
Sensor
Hand-Held
Wireless Remote
Right
Front
Left
Rear
Right
Rear
HS-68
HS-63
HS-61
HS-60
HS-64
HS-65
HS-66
HS-67
HS-62
16-1025
35 to 204 bar
(500 to 3,000 psi)
FIGURE 1-31
Pressure
Sender
Hand-Held
Wireless Remote
Counterweight
Pins
HS-68
HS-58
Engine Pump
16-1026
Accessory Pump
(Low-Pressure)

Manitowoc 16000 Specifications

General

Brand	Manitowoc
Model	16000
Category	Construction Equipment
Language	English