16. TROUBLESHOOTING 16.1 WHEN MACHINE RUNS OUT OF FUEL If the machine has run out of fuel, add fuel then bleed the air from the system before starting the engine. PROCEDURE FOR BLEEDING AIR 1. Loosen joint bolt 2. Loosen the knob of feed pump , and move it up and down until clear fuel containing no bubbles flows out through joint bolt . 3. Tighten joint bolt 16.2 PHENOMENA THAT ARE NO FAILURES Note that the following phenomena are not failures: 1. When the arm is pulled in, the speed of movement will drop momen- tarily when the arm is more or less vertical. 2. The arm speed will drop momentarily when the bucket teeth are more or less horizontal. 3.
When starting or stopping the swing, noise will be emitted from the brake valve. 4. When going down a steep slope at low speed, a noise will be emitted from the travel motor. 16.3 METHOD OF TOWING MACHINE When towing the machine, use a wire rope that has ample strength for the weight of the machine that is being towed. If the machine sinks in the mud and cannot get out under its own power, or if the drawbar pull of the excavator is being used to tow a heavy object, use a wire rope as shown in the diagram on the right. Place pieces of wood between wire ropes and body to prevent damage to ropes and body. At this time, never use the hook for light-weight towing. PC130/150LGP-6K ENG 2-97