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Komatsu WA470-7 Assembly Instruction Manual page 25

Wheel loader
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Assembly procedure
1-2. Adjustment of each EPC lever
1-2. Adjustment of each EPC lever
1-2. Adjustment of each EPC lever
*After performing steps ① to ④ of No. 0060 "Adjustment of work equipment EPC starting
*After performing steps ① to ④ of No. 0060 "Adjustment of work equipment EPC starting
*After performing steps ① to ④ of No. 0060 "Adjustment of work equipment EPC starting
current", perform the following work.
current", perform the following work.
current", perform the following work.
The screen displays the "Work equipment EPC lever detent set" in previous step ④.
The screen displays the "Work equipment EPC lever detent set" in previous step ④.
The screen displays the "Work equipment EPC lever detent set" in previous step ④.
[Adjustment of boom LOWER]
[Adjustment of boom LOWER]
[Adjustment of boom LOWER]
*Perform the following correction while the engine is running.
*Perform the following correction while the engine is running.
*Perform the following correction while the engine is running.
⑤-1. Set the boom almost horizontally with no-load and then lower it gradually with the
⑤-1. Set the boom almost horizontally with no-load and then lower it gradually with the
⑤-1. Set the boom almost horizontally with no-load and then lower it gradually with the
engine speed at high idle.
engine speed at high idle.
engine speed at high idle.
⑥-1. Slowly return the boom lever from LOWER toward NEUTRAL with fine control.
⑥-1. Slowly return the boom lever from LOWER toward NEUTRAL with fine control.
⑥-1. Slowly return the boom lever from LOWER toward NEUTRAL with fine control.
When the boom stops, hold the lever at the current position.
When the boom stops, hold the lever at the current position.
When the boom stops, hold the lever at the current position.
⑦-1. Press the ENTER switch, and the EPC command value is read and the difference
⑦-1. Press the ENTER switch, and the EPC command value is read and the difference
⑦-1. Press the ENTER switch, and the EPC command value is read and the difference
from the standard value is saved as an offset value.
from the standard value is saved as an offset value.
from the standard value is saved as an offset value.
⑧-1. When the display changes to "1", setting is completed.
⑧-1. When the display changes to "1", setting is completed.
⑧-1. When the display changes to "1", setting is completed.
Boom Lower Adjustment
Boom Lower Adjustment
Boom Lower Adjustment
1
1
1
0: Waiting
0: Waiting
0: Waiting
1: OK
1: OK
1: OK
2: NG
2: NG
2: NG
⑨-1. If the ENTER switch is pressed while the lever output voltage is below the standard
⑨-1. If the ENTER switch is pressed while the lever output voltage is below the standard
value (out of the design range), the display changes to "2" and adjustment is canceled.
value (out of the design range), the display changes to "2" and adjustment is canceled.
Boom Lower Adjustment
Boom Lower Adjustment
2
2
0: Waiting
0: Waiting
1: OK
1: OK
2: NG
2: NG
⑩-1. Finish the adjustment mode with the RETURN switch.
⑩-1. Finish the adjustment mode with the RETURN switch.
If the RETURN switch is pressed during adjustment, adjustment is finished even in the
If the RETURN switch is pressed during adjustment, adjustment is finished even in the
calibration process.
calibration process.
Precautions
Adjustment of work equipment EPC starting
NO.0060
current
Tools to be used
Name
Others
Others
22
Facilities to be used
Q'ty
Name
Q'ty

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