9
8
M
AINTENANCE
F
EATURES
External air conditioner
filter
PC78US
-8
Large TFT LCD Monitor
Large Multi-lingual LCD Monitor
A large user-friendly color monitor enables safe, accurate and smooth work.
Improved screen visibility is achieved by the use of TFT liquid crystal display that
can easily be read at various angles and lighting conditions. Simple and easy to
operate switches. Industry first function keys facilitate multi-function operations.
Displays data in 12 languages to globally support operators around the world.
EMMS (Equipment Management
Monitoring System)
Monitor function
Controller monitors engine oil pressure,
coolant temperature and battery charge
etc. If controller
finds any abnor-
mality, it is dis-
played 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.
Long Greasing Interval
All bushing lubrication intervals of work
equipment except arm top bushings
are 500 hours, reducing maintenance
cost.
Option
Blade
Back fill blade can quickly and
conveniently fill trenches and clear
up jobsites.
Roadliner
Ideal performance has been
achieved with combining the mer-
its of rubber and the strengths of
steel in the new Road Liner shoes.
Additional Counter Weight
Additional weight is designed for
increased lift capacity and easy
installation.
Air Conditioner Filter
The air conditioner filter is removed
and installed without the use of tools
facilitating filter maintenance.
Equipped with the Fuel Pre-filter
(with Water Separator)
Removes water and
contaminants in the
fuel to prevent fuel
problems. (with built-in
priming pump)
Easy Access to Engine Oil Filter,
Engine Main Fuel Filter and Fuel
Drain Valve
Engine oil filter, engine main fuel filter
and fuel drain valve
are remote mount-
ed to improve
accessibility.
Side-by-side Cooling
Since radiator, aftercooler and oil cooler
are arranged in parallel, it is easy to
clean, remove and install them.
Radiator, aftercooler, and oil cooler
made of alu-
minum have
high cooling
efficiency and
are easily
recycled.
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Easy Maintenance
Komatsu designed the PC78US-8 to
have easy service access. By doing so,
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 PC78US-8.
Optimum Maintenance Layout
With the engine hood, right side hood
and side service doors, it is possible to
access the major maintenance points
from ground level. Furthermore, the fuel
drain valve, engine oil filter and swing
machinery oil filler are remote mounted,
facilitating easy maintenance.
Basic
operation
switches
Air conditioner
operation
switches
Function
switches
8
1
2
3
4
5
6
7
5
6
1
2
3
4
6
7
8
1
2
3
4
5
1
2
3
4
5
6
Auto-decelerator
Working mode
Travel speed
Engine water
temperature gauge
Auto-decelerator
Working mode
selector
Traveling selector
Buzzer cancel
Wiper
Windshield washer
Indicators
Basic operation
switches
Hydraulic oil
temperature gauge
Fuel gauge
Eco-gauge
Function switches
menu
COMPACT HYDRAULIC EXCAVATOR
PC78US
-8
C
O M P A C T
H
Y D R A U L I C
E
X C A V A T O R
Internal air condi-
tioner filter
Photo : Bolt-on cutting edge type
