SAFETY Precautions for High-Temperature Liquids When you stop the machine at the end of a job, remember that the engine coolant, oil, all engine parts, exhaust stack, and the hydraulic system are still hot and under pressure. If you attempt to drain engine coolant or hydraulic fluid under these conditions, you expose yourself to various dangers, including the risk of serious burns. Perform maintenance procedures described in this manual only when the machine has had time to cool down.
Precautions for High-Temperature Coolant To prevent burns from boiling water or steam spurting out when checking or draining the coolant, wait for the coolant to cool down to a temperature where the radiator cap can be touched by hand. Once the coolant has cooled, loosen the cap slowly to release the pressure inside the radiator, then remove the cap. Precautions for High-Temperature Oil To prevent burns from hot oil spurting out or from touching high- temperature parts when checking or draining the oil, wait for the oil to cool down to a temperature where the cap or plug can be touched by hand.
When the oil has cooled, loosen the cap or plug slowly to release the internal pressure, then remove the cap or plug. Critical Parts Periodically some parts must be replaced due to safety purposes. Even if these parts seem to be in good condition and operating properly, they may fail at some point, possibly causing injury to the operator or pedestrian. Some of the following systems contain components that may fail under extended use: Seat belts Fuel supply and delivery hoses Hydraulic system: main delivery hoses and tubing Hydraulic hoses:
all the hoses that feed and return the hydraulic fluid to and from the work equipment For additional information, see “PERIODIC REPLACEMENT OF SAFETY-CRITICAL PARTS” on page 3-21.. 1-44 WA380-6