Komatsu Galeo PC800-8 Shop Manual page 425

30 Testing and adjusting
23. Function of reduced cylinder mode operation
[08]
The reduced cylinder mode can be controlled
with the machine monitor.
Reduced cylinder mode operation means to run
the engine with 1 or more fuel injectors disabled
electrically to reduce the number of effective cyl-
inders. This operation is used to find out a cylin-
der which does not output power normally (or,
combustion in it is abnormal).
1) Selection of menu
Select "08 Cylinder cut out" on the initial
screen of the service menu and press the
[ ] switch.
2) Setting of cylinders to be disabled
Press switches [1] – [6] on the machine
monitor corresponding to the cylinder Nos.
to be disabled.
a After a switch is pressed, if the cylinder
No. corresponding to it on the machine
monitor is displayed white in a white
frame, the cylinder is disabled (If setting
is wrong, press the same switch again).
a Only one or more cylinders can be disa-
bled for the reduced cylinder mode oper-
ation.
PC800, 850-8
3) Cancellation of disabled cylinders
Press switches [1] – [6] on the machine mon-
itor corresponding to the disabled cylinder
Nos. to cancel disabling of those cylinders.
a After a switch is pressed, if the cylinder
No. corresponding to it on the machine
monitor is displayed black in a black
frame, disabling of the cylinder is can-
celled.
SEN00913-02
31