9
8
Easy removal and installation of
the radiator (side-by-side
cooling)
Removal and installation of the radiator
and oil cooler are made easier by
locating them side-by-side.
Easy Access for Engine Inspection
The engine oil check pipe, oil filler, and
oil filter, etc., are located on the left
side of the engine.
High-Capacity Air Cleaner
High capacity air cleaner is comparable
to that of larger machine.
The air cleaner can extend air cleaner
life during long-term operation and
prevents early clogging and resulting
power decrease. Reliability is
improved by a new seal design.
H
Y D R A U L I C
E
X C A V A T O R
M
AINTENANCE
F
EATURES
HYDRAULIC EXCAVATOR
PC450-7
PC450-7
Fuel Tank Capacity Increased
Fuel tank capacity is increased from
605 ltr
160 U.S. gal
to
650 ltr
172 U.S. gal to extend operating hours before
refueling. The fuel tank is treated for rust prevention and
improved corrosion resistance.
Easy Maintenance
Quarry Hydraulic Excavator
The PC450-7 is a specially designed for heavy-duty
applications. The PC450-7 has strengthened work equipment
and reinforced body parts for use in severe job sites such as
quarry and gravel gathering, etc.
Cab with two-piece
pull-up window
(optional)
Fixed one-piece
laminated front
window glass
The front window is
fixed and uses
laminated safety glass
to prevent scattering of
glass fragments when
broken.
Fixed Skylight and Sunshade
Heavy-Duty Boom
Heavy-Duty
Arm
Dent Preventing
Plates
Plate length
increased 37%
Deck Guard
Strengthened Revolving
Frame Underguard
Full Roller Guard
Quarry Bucket
PC450-7 bucket is designed exclusively for quarry use and is
higher strength for impact and wear. Various parts of work
equipment are also strengthened.
Side Shrouds
Lip
Shrouds
Side Reinforcement plate
16 mm
0.63” thickness high-
tensile strength steel used
O-Ring Added
O-ring is added between
bucket and linkage to prevent
entrance of dirt
Corner Tooth
Adapter
Double-Flange Track Roller
Double-flange rollers guide track link
correctly and extends life of undercarriage.
Number of double-flange track rollers
PC450-7 . . . . . . . . . . . . .3 each side
PC450LC-7 . . . . . . . . . . .4 each side
Bottom Wear Plate
19 mm
0.75” thickness high-
tensile strength steel used
Photo may include optional equipment.
Photo may include optional equipment.
Multi-Function Color Monitor
PC450-7
PC450-6
Engine oil
500
250
Engine oil filter
500
250
Hydraulic oil
5,000
5,000
Hydraulic oil filter
1,000
500
A newly developed Multi-Function Color Monitor has multiple
functions, such as Working mode selection, hydraulic pump
oil flow adjustment for matching to attachment, and
maintenance interval notice, etc.
EMMS (Equipment Management Monitoring System)
Monitor Function
Controller monitors engine oil level,
coolant level, engine oil pressure,
coolant temperature, battery charge
and air cleaner clogging, etc. If the
controller finds any abnormality,
it is displayed on the LCD.
Maintenance Function
Monitor informs replacement time
of oil and filters on LCD when the
replacement interval is reached.
Trouble Data Memory Function
Monitor stores error codes for effective troubleshooting.
●
Hydraulic Oil and Filter/Engine Oil and Filter
Replacement Interval Extended
The new high performance filters are
used in hydraulic circuit and engine.
Hydraulic oil filter, engine oil, and
engine oil filter element replacement
intervals are significantly extended to
reduce maintenance costs.
Comparison of Replacement Intervals
unit: hours
Reducing Maintenance Costs
Work Equipment Lubrication Intervals Are
Extended with OMRF Bushings
The lubrication interval is greatly extended by using BMRC
bushings on the boom foot and boom cylinder, OMRF bushing
on the other work equipment, and CRHF on the arm end face.
Also, resin shims are applied to prevent friction sound between
end faces at the work equipment pin bracket.
PC450-7
PC450-6
Bucket pin bushings
250
50
Boom foot and boom
cylinder bottom bushings
500
50
Other bushings
500
100
Work equipment lubrication interval
unit: hours
BMRC (Bata Matrix
Reinforced Copper Alloy)
CRHF (Carbide Reinforced
Hard facing Ferrous Alloy)
OMRF (Orderd Matrix
Reinforced Ferrous Alloy)
Resin shim
New hydraulic oil filter
