Komatsu PC1250-11 Original Instructions Manual page 229

OPERATION
3.
Set the working mode to P+ mode (production emphasis
work mode).
The hydraulic component is warmed up quickly.
For setting the working mode, see "WORKING MODE SE-
LECTOR SWITCH".
4.
Operate the operating portion (g) of the lock lever (3) slow-
ly and securely to set it to FREE
5.
Turn the fuel control dial (4) to a position midway between
Low idle (MIN) and High idle (MAX).
6.
Operate the work equipment to warm up the hydraulic
components.
NOTICE
When the work equipment is operated, take care that it
does not interfere with the machine or ground.
1)
Move the R.H. work equipment control lever (5) slowly
in the direction of bucket CURL position (D). Operate
the lever to the end of its stroke and hold it in the posi-
tion for 30 seconds.
2)
Move the R.H. work equipment control lever (5) slowly
in the direction of bucket DUMP position (C). Operate the lever to the end of its stroke and hold it in the
position for 30 seconds.
3)
Next, move the L.H. work equipment control lever (6) slowly in the direction of arm IN position (B). Op-
erate the lever to the end of its stroke and hold it in the position for 30 seconds.
4)
Move the L.H. work equipment control lever (6) slowly in the direction of arm OUT position (A). Operate
the lever to the end of its stroke and hold it in the position for 30 seconds.
7.
Repeat the operation of step 6 for 5 minutes.
8.
Check that the hydraulic oil temperature caution lamp (7) displays the correct temperature.
If the hydraulic oil temperature caution lamp is not displaying the correct temperature (it is displaying the
low temperature), repeat the Steps 6. to 7. until it displays the correct temperature.
MACHINE OPERATIONS AND CONTROLS
3-163