Manitowoc MLC165-1 Service Maintenance Manual

Reference Only
ACCESSORIES MLC165-1 SERVICE/MAINTENANCE MANUAL
10-2
Published 05-26-17, Control # 238-02
Jack Cylinders
Neutral
The valve spool is centered by the return springs in the
neutral position. The center valve position is closed, so no
fluid flows to the cylinder. The holding valves are also in the
closed position, so no fluid can flow from the rod or barrel
end of the cylinder if a load on the cylinder is producing
pressure.
Extend
When the valve handle is moved to the extend position, the
valve spool moves to the open position. Fluid flows from the
pressure port, through the check valve, through the valve,
and on to the holding valve. At the holding valve, fluid flows
through the check valve at the barrel end of the valve and
into the barrel end of the cylinder. At the same time, fluid
opens the valve at the rod end of the cylinder. As fluid fills the
barrel end of the cylinder, the rod extends and the movement
forces fluid out of the rod end, through the open holding
valve, through the open valve, and back to tank.
Retract
When the valve handle is moved to the retract position, the
valve spool moves to the reversing position. Fluid flows from
the pressure port, through the check valve, through the
valve, and on to the holding valve. At the holding valve, fluid
flows through the check valve at the rod end of the valve and
into the rod end of the cylinder. At the same time, fluid opens
the valve at the barrel end of the cylinder. As fluid fills the rod
end of the cylinder, the rod retracts and the movement forces
fluid out of the barrel end, through the open holding valve,
through the open valve, and back to tank.
Pin Pullers
Neutral
The valve spool is centered by the return springs in the
neutral position. The center valve position is closed, so no
fluid flows to the cylinder.
Extend
When the valve handle is moved to the extend position, the
valve spool moves to the open position. Fluid flows from the
pressure port, through the check valve, through the valve,
and on to the cylinder. As fluid fills the barrel end of the
cylinder, the rod extends and the movement forces fluid out
of the rod end, through the open valve, and back to tank.
Retract
When the valve handle is moved to the retract position, the
valve spool moves to the reverse position. Fluid flows from
the pressure port, through the check valve, through the
valve, and on to the cylinder. As fluid fills the rod end of the
cylinder, the rod retracts and the movement forces fluid out
of the barrel end, through the open valve, and back to tank.
M100844
Figure 10-2. Jack Cylinder Control
M100841
Figure 10-3. Car Body Pin Puller Control

Manitowoc MLC165-1 Specifications

General

Brand	Manitowoc
Model	MLC165-1
Category	Construction Equipment
Language	English