16. TROUBLESHOOTING 16.1 PHENOMENA THAT ARE NOT FAILURES Note that the following phenomena are not failures: 1. When the arm is pulled in, the speed of movement will drop momentarily when the arm is more or less vertical. 2. The arm speed will drop momentarily when the bucket teeth are more or less horizontal. AM091100 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. AM091110 16.2 METHOD OF TOWING MACHINE ¤ WARNING 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 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 hole for light-weight towing. 16.3 USING METHOD FOR LIGHT-WEIGHT TOWING HOLE AM091120 ¤ WARNING The shackle must always be used. Hold the rope level and direct it straight to the track frame. Move the machine slowly in the Lo mode. AM091130 There is a hole in the track frame to fit the shackle when towing light objects. 2-98