Manitowoc 16000 Service And Maintenance Manual

Reference Only
Manitowoc Published 05-09-17, Control # 014-28 1-31
16000 SERVICE/MAINTENANCE MANUAL INTRODUCTION
1
Node controllers continuously balance the system pressure
and motor displacement angle so the motor displacement
goes to minimum when control handle is fully forward, if the
motor torque requirement is not too high. Node-1 controller
monitors motor displacement and controls motor speed by
regulating the hydraulic fluid flow through the pump.
The weight of boom attempts to drive motor faster than
return fluid can return to low-pressure side of pump. System
charge pump maintains fluid supply at a positive pressure to
motor. Pump swashplate position restricts the returning fluid
flow. Pressure builds on fluid return side of closed-loop,
acting as a hydraulic brake to control lowering speed.
When control handle is moved toward neutral position,
Node-3 controller sends an output voltage to the pump EDC
that moves swashplate toward center position. This shifts the
motors back to maximum displacement for slower output
speed to slow drum rotation.
When control handle is moved to neutral position, Node-1
controller stores the load holding pressure in pressure
memory. After control handle center switch opens, Node-4
controller sends a zero output to disable brake release
solenoid HS-10. Drum brake valve shifts to block pilot
pressure to brake and opens a line to tank. When brake
applies, an input signal is sent to Node-1 controller. Node-4
controller sends a 0 volt output to boom pump EDC to de-
stroke pump. Node-4 and 5 controllers send a 0 volt output to
each motor PCP.

Manitowoc 16000 Specifications

General

Brand	Manitowoc
Model	16000
Category	Construction Equipment
Language	English