Manitowoc MLC650 Service Maintenance Manual

Reference Only
UNDERCARRIAGE MLC650 SERVICE/MAINTENANCE MANUAL
8-20
Published 09-09-16, Control # 229-09
Neutral Position Using Setup Remote
See Figure 8-11 and Figure 8-14 for the following.
When the crane control system is on, the selector solenoid
valve (1) is energized. The energized selector valve routes
hydraulic fluid to the six-section lower accessory valve
assembly (2).
When no signal is sent to any of the pin puller cylinder
solenoids in the six-section lower accessory valve assembly,
all the valve spools are held in the neutral position by the
return springs. When the spools are in the neutral position,
the cylinder is held in place because both sides of the
cylinder piston are connected to tank via the valve spool.
When the setup remote transmitter is turned off, the selector
solenoid valve shifts to the default position. This causes the
hydraulic fluid to flow to the manual control manifold,
allowing the pin puller cylinders to be controlled manually.
Extend Pin Pullers Using Setup Remote
See Figure 8-12 and Figure 8-14 for the following.
When the crane control system is on, the selector solenoid
valve (1) is energized, allowing hydraulic fluid to flow to the
six-section lower accessory valve assembly (2).
When a pin puller extend command is initiated on the setup
remote transmitter, the CCMB11 control module energizes
the corresponding cylinder extend solenoid in the six-section
lower accessory valve assembly. The solenoid valve routes
pilot hydraulic fluid through a shuttle valve, then to the
corresponding valve spool. This causes the valve spool to
shift to a position that allows hydraulic fluid from the
accessory pump to flow to the piston end of the pin puller
cylinders. At the same time, hydraulic fluid in the rod end of
the cylinder is forced out and back to the tank. This causes
the rod to extend, engaging the pins.
Retract Pin Pullers Using Setup Remote
See Figure 8-12 and Figure 8-14 for the following.
When the crane control system is on, the selector solenoid
valve (1) is energized, allowing hydraulic fluid to flow to the
six-section lower accessory valve assembly (2).
When a retract pin puller command is initiated on the setup
remote transmitter, the CCMB11 control module energizes
the corresponding cylinder retract solenoid in the six-section
lower accessory valve assembly. The solenoid valve routes
pilot hydraulic fluid through a shuttle valve, then to the
corresponding valve spool. This causes the valve spool to
shift to a position that allows hydraulic fluid from the
accessory pump to flow to the rod end of the pin puller
cylinders. At the same time, hydraulic fluid in the piston end
of the cylinder is forced out and back to the tank. This causes
the rod to retract, disengaging the pins.

Manitowoc MLC650 Specifications

General

Brand	Manitowoc
Model	MLC650
Category	Construction Equipment
Language	English