Work Equipment Lubrication Intervals Are
Extended with Optional BMRC Bushings
The lubrication interval is greatly extended by using BMRC
bushings on the work equipment. Also, resin shims are
applied to prevent friction sound between end faces at the
work equipment pin bracket. (except bucket pin bushings)
VALUE ADDED OPTIONS
Multi-Function Color Monitor
High
Mid
Low
Travel Speed
5.5 km/h
4.4 km/h
3.0 km/h
3.4 mph
2.7 mph
1.9 mph
Working Mode
Application
Advantage
Active mode
●
Maximum production/power
A
●
Fast cycle times
E
Economy mode
●
Excellent fuel economy
L
Lifting mode
●
Hydraulic pressure is
increased by 7%
B
Breaker
●
Optimum engine rpm,
operation
hydraulic flow
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.
Working Mode Selection
The Multi-Function Color Monitor has
Lifting mode
in addition to the standard three-mode selection
(
A
,
E
, and
B
modes).
Automatic Three-Speed Travel
Travel speed is automatically shifted between high, mid
and low speeds according to the travel pressure. This
optional system is available as part of the Multi-Function
Color Monitor.
Lifting Mode
When the Lifting mode is selected,
lifting capacity is increased 7%
by raising hydraulic pressure.
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 Pump Oil Flow Adjustment System
When installing attachments (breaker, crusher, etc.) and
B, A, or E mode is selected, it is possible to adjust engine
and hydraulic pump discharge flow to match attachment
characteristics. Selection is possible throughout the LCD
(Liquid Crystal Display). This system also allows throttling
of the attachment side discharge flow to provide smooth
work equipment movement and compound operation
with work equipment and attachment.
Maintenance Costs Reduced
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.
Self-Diagnostic Monitor
The PC400-7 features the most advanced diagnostics
system in the industry. The Komatsu exclusive system
identifies maintenance items, reduces diagnostic times,
indicates oil and filter replacement hours and displays
error codes.
Continuous Machine Monitoring System
When turning the starting switch ON, Check-before-starting
items and caution items appear on the liquid crystal panel.
If abnormalities are found, a warning lamp blinks and
a warning buzzer sounds. The continuous machine condition
checks help prevent the development of serious problems
and allows the operator to concentrate on the controls.
Abnormalities Shown on Electronic System Display
When an error occurs during operation, a user code
is displayed. When an critical user code is displayed,
a caution lamp blinks and a warning buzzer sounds
to prevent the development of serious problems.
Oil Maintenance Function
When the machine exceeds oil or filter replacement time,
the oil maintenance monitor lights to inform operator.
A
B
D
C
E
F
G
H
I
J
K
L
M
N
O
P
A
Engine Water Temperature
B
Battery Charge
C
Engine Oil Pressure
D
Air Cleaner Clogging Monitor
E
Auto-Decel Switch
F
Travel Speed Select Switch
G
Working Mode Select Switch
H
Fuel Level Monitor
I
User or Trouble Code Display
J
Service Meter Display
K
Engine Oil Level
L
Engine Preheat
M
Swing Lock Display
N
Oil Maintenance
O
Windshield Wiper Switch
P
Windshield Washer Switch
PC400-7
PC400-6
Boom foot and boom
cylinder bottom bushings
500
50
Other bushings*
500
100
Work Equipment Lubrication Interval
unit: hours
(
*
: except bucket pin bushings)
H
Y D R A U L I C
E
X C A V A T O R
M
AINTENANCE
F
EATURES
HYDRAULIC EXCAVATOR
PC400-7
PC400-7
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.
Reducing Maintenance Costs
Easy Maintenance
Hydraulic oil filter replacement interval
is extended from 500 to 1000 hours.
Engine oil and filter replacement interval
are extended from 250 to 500 hours.
New hydraulic oil filter
BMRC (Beta Matrix Reinforced Copper Alloy)
A bushing made by combining a sintered copper layer
impregnated with oil for better
fitting and a backing metal. It is
used for severe application
parts which receive low rocking
stresses and high loads to
prevent creaking and scuffing
because of its excellent sliding
characteristics.
Resin Made Shim
Resin made shims are used for
work equipment pin
connections (except bucket
connections) to reduce noise.
Backing metal (steel)
Sintered Al bronze layer impregnated
with high-performance lubricating oil
Resin shim
