Hydraulic System - General - Mec Speed Level 2684 RT Service And Parts Manual

H S
YDRAULIC
The hydraulic integrated circuit, generally known as the manifold system (valve type) is
designed to control all or part of machine functions by integrating various hydraulic
cartridge valves into a manifold to provide directional, pressure, flow, and load control.
The hydraulic system is a feedback, load-sensing type. Generally in this type of system,
hydraulic fluid is provided by a variable displacement, pressure compensated, axial
piston type pump which is directly coupled to the engine. As the engine turns, the
hydraulic pump drains fluid from the reservoir and pumps this fluid to the valve
manifold.
If no function is selected to perform, the pump remains on standby and no fluid is
pumped through the manifold. Each function has a maximum pressure control limit set
by pressure relief valve.
October 2009
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YSTEM ENERAL
Hydraulic
Reservoir
Hydraulic Fluid
Sight Gauge
Hydraulic Fluid
Hydraulic Fluid
ART_3132
Hydraulic
Fluid Sight
Gauge
ART_3282
"3084 Speed Level™ Sigma Lift" Service and Parts Manual
Filter
Pump
Engine
15
BR AM P
EA KE
R
Main
Hydraulic
Manifold
Hydraulic Fluid
Pump and Motor
H S – G
Y D R A U L I C Y S T E M
Figure 1-1: Hydraulic System
Power Module
3084RT
Controls Module
3084ES
Hydraulic Fluid
Filter
Hydraulic
Reservoir
E N E R A L