“3084 Speed Level™ Sigma Lift” Service and Parts Manual
October 2009
Page 1-2
H
Y D R A U L I C
S
Y S T E M
– G
E N E R A L
H
YDRAULIC
S
YSTEM
– G
ENERAL
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.
Figure 1-1:
Hydraulic System
ART_3132
Power Module
3084RT
Hydraulic
Reservoir
Hydraulic Fluid
Filter
Hydraulic Fluid
Sight Gauge
Hydraulic Fluid
Pump
Engine
15
AM
P
BR
EAKE
R
Hydraulic
Reservoir
Hydraulic Fluid
Filter
Hydraulic
Fluid Sight
Gauge
Hydraulic Fluid
Pump and Motor
Main
Hydraulic
Manifold
ART_3282
Controls Module
3084ES
Содержание Speed Level 2684 ES
Страница 52: ...3084 Speed Level Sigma Lift Service and Parts Manual October 2009 Page 1 32 GENERATOR OPTION 3084RT NOTES...
Страница 104: ...3084 Speed Level Sigma Lift Service and Parts Manual November 2009 Page 3 20 ENGINE MAINTENANCE NOTES...
Страница 142: ...3084 Speed Level Sigma Lift Service and Parts Manual November 2009 Page 4a 38 TROUBLESHOOTING 3084RT MODELS NOTES...