GỒM CÁC PHẦN: Cab & Operator Environment.ppt Electronic Control Systems.ppt Electronics Control System – Monitors Recap.ppt Hydraulics.ppt Improved_CSS.ppt Introduction.ppt Mechanicals Power Trainand Structures.PPT Technical Presentation Ki
Trang 1Technical Presentation Kit
Hydraulic Excavators
Hydraulics
Section 4
Trang 2PRODUCTIVITY FEATURES [NO.3]
2-WORKING MODES (A·E)
Active mode (A mode) supplies maximum engine power
resulting in high levels of production
Economy mode (E mode) improves fuel consumption
Trang 3PC1250-7 GALEO
Heavy Lift Pressure? 340 or 350
kg/cm2
Cooler By Pass Valve pressure? 4.08 or
less
Pump bypass or ‘Prolix’ HP? ‘E’ not ‘G’
Other SM errors in print….
Trang 4RELIABILITY AND DURABILITY FEATURES
[NO.9]
HIGHLY RELIABLE FFOR HYDRAULIC PIPING
New hydraulic hose connectors of
O-ring face seal type are utilized
Since they are sealed with O-rings, they prevent oil leakage better than the conventional connectors of taper seal type
FFOR (Flat Face O- Ring) system
is ISO compliant for high pressure
FFOR Class B selected by design
team to best retain o-rings at assy
Trang 5RELIABILITY AND DURABILITY FEATURES
[NO.10]
LONG LIFE HOSES
Improvement of hydraulic hoses between machine body and
work equipment
The length of the hoses which need to be replaced periodically is
reduced by half to reduce the R&M cost
In addition, the hoses are less bent at their adapters to increase
their durability
Trang 6PC1250-7 GALEO
? 4 or 2.5kg/cm2 ?
Trang 7PC1250-7 GALEO
Accumulator
Check Valve
drawn in error
location….
Can you
determine
where it
belongs?
Trang 8PC1250-7 GALEO
Accumulator
Check Valve is
CORRECTLY
shown here as
installed on the
machine!
See SM Page
10-110
Trang 9PC1250-7 GALEO
SM Page 10 - 50
Trang 10PC1250-7 GALEO
SM Page 10 - 169
Removed on
GALEO-7
Trang 11Hydraulic System
Hybrid hydraulic return filter element
introduced in PC1100-6… same.
Balance of Hydraulic E-OLSS system is
same, physically, as PC1100-6.
Trang 12END HYDRAULICS SECTION
END HYDRAULICS SECTION
Technical Presentation Kit
Introduction
Cab Structure &
Monitor
Mechanicals
Hydraulic Syste
m
Electronic Contr
ol System
Testing &
Adjusting
PRESENTATION
MENU
PC1250 - 7
Hydraulic Excavators