Manitowoc Published 05-03-17, Control # 228-03 1-75
16000 SERVICE/MAINTENANCE MANUAL INTRODUCTION
When the telescopic beam hinge pin switch is moved and
held in the engage (in) position, an input signal from the
wireless transmitter is sent to a receiver on the crane. The
receiver sends the input signal to the Node-1 controller. The
Node-7 controller sends a 24 volt output to enable telescopic
beam hinge pins solenoid HS-90 and shifts the valve to the
engage position. The Node-3 controller sends a variable 0 to
24 volt output to enable the accessory system proportional
relief solenoid HS-68 for a system pressure of 28 bar (406
psi) to the hinge pin cylinders.
Hydraulic fluid pressure at approximately 28 bar (406 psi)
flows to the beam hinge pin accessory valve. Hydraulic fluid
leaves the accessory valve and enters the piston end of the
beam pin cylinder, extending the cylinder rod to engage the
beam hinge pins. Hydraulic fluid from the rod end of the
beam pin cylinder leaves the accessory system valve and
returns to the tank.
When the beam hinge pins switch is released, an input signal
is sent to the Node-1 controller. The Node-7 controller sends
a zero-volt output to the hydraulic solenoid HS-90 to return
the valve to the center position.
Node-3 sends a variable voltage output to the accessory
system proportional relief solenoid HS-68 to provide
approximately 207 bar (3,002 psi) system pressure.
Install the locking pins in the engaged position.
HS-90
HS-91
FIGURE 1-58
Telescopic Beam Hinge Pins - Disengage
HS-90
HS-91
Telescopic Beam Hinge Pins - Engage
Proportional
Relief Valve
Suction
Manifold
Variable Accessory
Pump 400 to 5,000
psi
(28 to 345 bar)
Pressure Control Pilot
400 (28 bar)
Proportional
Relief Valve
Suction
Manifold
Variable Accessory
Pump 400 to 5,000
psi
(28 to 345 bar)
Pressure Control Pilot
400 (28 bar)
HS-68
400 (28 bar)
HS-68
400 (28 bar)
To Wheel
Brakes
400 (28 bar)
To Wheel
Brakes
400 (28 bar)
M16-16
M16-17
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