Work Equipment Lubrication Interval
unit: hours
(
*
: except bucket pin bushings)
●
Easy Radiator Cleaning
Clearance between radiator
and oil cooler is increased to
facilitate radiator core cleaning
with an air nozzle.
●
Water Separator and
Corrosion Resistor
are
standard equipment,
removing water mixed in fuel
and preventing fuel and
cooling systems damage.
●
Self-diagnostic Monitor
allows display of vital self-
diagnosis, as well as displaying up to 39 different faults.
●
Easy Access to Engine Oil
Filter and Fuel Drain Valve
Engine oil filter and fuel drain
valve are remotely mounted
to improve accessibility.
Reducing Maintenance Costs
●
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
●
Fuel Tank Capacity Increased
Fuel tank capacity is increased from
540 ltr
142.7 U.S. gal
to
605 ltr
160.0 U.S. gal to extend operating hours before
refueling. Fuel tank is treated for rust prevention and
improved corrosion resistance.
9
8
Easy Maintenance
Komatsu designed the PC300-7 to have easy service
access. We know by doing this, routine maintenance and
servicing are less likely to be skipped, which can mean a
reduction in costly downtime later on. Here are some of the
many service features found on the PC300-7.
Water Separator
Self-Diagnostic Monitor
The PC300-7 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 starting switch ON, Check-before-starting
item 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 on Electronic System Display
with Code
When an error occurs during operation, a user code
is displayed. When an important user code is displayed,
a caution lamp blinks and a warning buzzer sounds
to prevent the development of serious problems.
Oil Maintenance Function
When machine exceeds oil or filter replacement time,
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
OPTIONS TO UPDATE THE VALUE
Multi-Function Color Monitor
High
Mid
Low
Travel Speed
5.5 km/h
4.5 km/h
3.2 km/h
3.4 mph
2.8 mph
2.0 mph
PC300-7
PC300-6
Engine oil
500
250
Engine oil filter
500
250
Hydraulic oil
5,000
5,000
Hydraulic oil filter
1,000
500
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-Travel Speed
Travel speed is automatically shifted from high to low
speed according to the pressure of the travel. 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 by
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 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 abnormalities for effective troubleshooting.
Remote
Mounted
Engine
Oil Filter
Easy Radiator Cleaning
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.
M
AINTENANCE
F
EATURES
H
Y D R A U L I C
E
X C A V A T O R
HYDRAULIC EXCAVATOR
PC300-7
PC300-7
0
Work Equipment Lubrication Intervals Are
Extended with Optional BMRC Bushings
Newly developed BMRC bushings are used on the work
equipment. All bushing lubrication intervals of work equipment
are extended reducing maintenance costs. (except bucket pin
bushings)
Maintenance Costs Reduced
PC300-7
PC300-6
Boom foot and boom
cylinder bottom bushings
500
50
Other bushings*
500
100
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
