Komatsu Galeo PC800-8 Shop Manual page 426

SEN00913-02
4) Function of holding engine speed
If the [E] switch is pressed while the
reduced cylinder mode operation screen is
used, the engine speed is held and dis-
played on the lower line.
If the [R] switch is pressed while the engine
speed is held, holding of the engine speed is
cancelled and the engine speed displayed
on the lower line goes off.
a If the holding function is used, the held
engine speed is displayed in ( ) on the
lower line and the current engine speed
is displayed on the upper line.
a The holding function can be used both in
and out of the reduced cylinder mode.
32
[Reference]: How to use holding function effec-
tively
The engine speed displayed by the holding func-
tion is held on the screen until the holding func-
tion is cancelled, regardless of setting and
cancellation of the reduced cylinder mode.
Accordingly, a defective cylinder can be found out
effectively according to the following procedure.
(1) Run the engine normally (without disabling
any cylinder) and hold the engine speed.
(2) Disable a cylinder to be checked.
(3) Run the engine under the same condition as
the normal operation in step (1) and com-
pare the engine speed at this time with the
held engine speed.
(4) If there is not a difference between the cur-
rent engine speed and the held engine
speed in step (3), cancel the reduced cylin-
der mode.
(5) Repeat steps (2) – (4) to check the other
cylinders.
30 Testing and adjusting
PC800, 850-8