Manitowoc 18000, Service Maintenance Manual, Page: 82 / 316

Reference
Only
INTRODUCTION 18000 SERIVCE/MAINTENANCE MANUAL
1-70
Published 12-05-17, Control # 035-23
Adapter Frame Pins
See Figures 1-39 and 1-42 for the following procedure.
During normal operation the adapter frame pins solenoid
valve is “motor spooled” where both cylinder ports and tank
port of valve spool section are connected in center position.
Power is available to hand-held radio remote control when
setup remote mode is selected, engine is running, and power
button is pressed. The adapter frame pins cannot be
engaged/disengaged until keeper plates from pins are
removed.
When front or rear adapter frame pins switch is placed in the
engage position and held, an input voltage is sent to node-1
controller. Node-6 controller sends a 24 volt output to enable
selected adapter frame pins solenoid valve HS-29 (front) or
HS-27 (rear) and shifts valve to the engage position. Node-5
controller sends a variable zero to 24 volt output voltage to
enable accessory system proportional relief valve.
When an accessory valve spool shifts, supply flow to the
other accessory valves is limited. The accessory system
pressure sender monitors accessory system pressure.
Hydraulic fluid pressure at approximately 3,000 psi (204 bar)
flows to adapter frame pins accessory valve. Hydraulic fluid
leaves the accessory valve and enters piston end of selected
pin cylinders, extending cylinder rod to engage the adapter
frame pins. Hydraulic fluid from rod end of pin cylinders
leaves accessory system valve and returns to tank. When
adapter frame pins switch is released, solenoid valve HS-29
(front) or HS-27 (rear) returns to center position.
When adapter frame pins switch is placed in the disengage
position and held, an input voltage is sent to node-1
controller. Node-6 controller sends a 24 volt output to enable
selected adapter frame pins solenoid valve HS-30 (front) or
HS-28 (rear) and shifts valve to the disengage position.
Node-5 controller sends a variable zero to 24 volt output
voltage to enable accessory system proportional relief valve.
Hydraulic fluid pressure at approximately 3,000 psi (204 bar)
flows to adapter frame pins accessory valve. Hydraulic fluid
leaves the accessory valve and enters rod end of pin
cylinders, retracting cylinder rods to disengage the adapter
frame pins. Hydraulic fluid from piston end of pin cylinders
leaves accessory system valve and returns to tank. When
adapter frame pins switch is released, solenoid valve HS-30
(front) or HS-28 (rear) returns to center position.