HYDRAULIC EXCAVATOR
M
AINTENANCE
F
EATURES
H
Y D R A U L I C
E
X C A V A T O R
PC228US
-3E0
PC228US
-3E0
0
The PC228US-3E0 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 continu-
ous machine condition checks help
prevent the development of serious
problems and allows the operator to
concentrate on the controls.
Abnormally 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, the oil maintenance
monitor lights to inform operator.
Trouble Data Memory Function
Monitor stores abnormalities for
effective troubleshooting.
Maintenance display of the EMMS multi-color monitor (Example)
Normal display
Maintenance time display
Engine oil replacement display
Abnormal information & checking function display of the EMMS multi-
color monitor (Example)
Battery charging abnormal display
Error code display
Display for night work
Self-diagnostic Monitor
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Indicators
Working mode
Service meter
Travel speed
Engine water temperature gauge
Hydraulic oil temperature gauge
Fuel gauge
Swing parking brake
Preheater
Wiper
Auto-decelerator
Power Max.
Switches
Power mode
Economy mode
Lifting mode
Breaker mode
Buzzer cancel
Selector switch
Auto-decelerator
Travel speed selection
Screen adjustment switch
Maintenance mode
Wiper
Windshield washer
Input control switches
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Maintenance Costs Reduced
Long Replacement Interval of Hydraulic Oil and
Filter/Engine Oil and Filter
High performance filters are used in the hydraulic circuit and
engine. Longer hydraulic oil, hydraulic oil filter, engine oil
and engine oil filter element replacement
intervals significantly reduce
maintenance costs.
Engine oil &
engine oil filter
every
500
hours
Hydraulic oil
every
5000
hours
Hydraulic oil filter
every
1000
hours
Long Work Equipment Greasing Interval (optional)
High quality BMRC bushings and resin shims are optionally
available for work equipment pins excluding bucket, extending
greasing interval to 500 hours (except bucket pin bushings).
LCD Multi-function Color
Monitor
Easy Maintenance
Komatsu designed the PC228US-3E0 to have easy service access. We know by doing this, routine maintenance and servic-
ing 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 PC228US-3E0:
Optimum Maintenance Layout
Effortless access to engine-related maintenance items such as oil
filter, oil dipstick, coolant reserve tank, fuel filter, and air cleaner.
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Engine
Pump
Central partition
Left rear side cover
Control valve
Hydraulic tank
Fuel tank
Radiator
Oil cooler
Air-cooled aftercooler
Engine hood
Right rear side cover
Right front side cover
Left rear side cover
1. Cooling water reserve
tank
2. Air cleaner
3. Battery
4. Tool box
5. Grease gun holder
Right rear side cover
6. Fuel pre-filter
7. Engine oil filter*
8. Oil filler for PTO*
9. Fuel drain valve*
Right front side cover
10. Windshield washer tank
Central partition
11. Oil level check pipe for
machinery
12. Oil filler for machinery
Opening/Closing of
engine hood
13. Engine oil check pipe
14. Engine oil filler
15. Fuel filter
*Remote maintenance items
Easy Radiator Cleaning
Since radiator and oil cooler are
arranged side-by-side, it is easy to
clean, remove and install them.
Equipped with the Fuel Pre-filter
(with Water Separator)
Removes water and
contaminants in the
fuel to prevent fuel
problems.
Washable Floor
The PC228US-3E0’s floor is easy to
keep clean. The gently inclined surface
has a flanged floormat and drainage
holes to facilitate runoff.
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