Komatsu Hydraulic Excavator PC390LCi-11

METHOD OF CHECKING LOOSENESS OF BUCKET CYLINDER STROKE SENSOR WIRING HARNESS CLAMP, HARDENING OF RUBBER

Check visually and by touching with hand that there is no loose clamp mounting bolts and no hardening of the rubber for the bucket cylinder stroke sensor wiring harness.

Replacement is required if any trouble is found. Ask your Komatsu distributor for that work.

METHOD OF CHECKING AND CLEANING CYLINDER STROKE SENSOR CASE BOLT

If compressed air, high-pressure water, or steam hits your body directly or dirt is scattered by the compressed air, high-pressure water, or steam, there is a danger of personal injury. Wear protective equipment such as protective eyeglasses and dust mask.

Check if the dirt and dust are accumulated in the hexagonal hole of bolt for cylinder stroke sensor case. If the dirt and dust are accumulated, clean it.

NOTICE: If the dirt and dust accumulated in the hexagonal hole of bolt for sensor case are left without cleaning, the dirt and dust stick and bolt cannot be removed.;

Check that the bolts and nuts of the intelligent Machine Control are not loose

Check that the wiring harness connector is not loose

Check that the installing direction of GNSS antenna matches marks

Check that the connector (2) of GNSS antenna is tightened

Check that antenna is not faulty, installed position is not behind the machine, antenna cable coating is not damaged, and connector is not loosened

Check that the control box is located in the position for you to see it well, and the visibility of front right of cab is good

Check that control box is fixed securely

Check that the battery disconnect switch (S) is in ON position (I)