4.8 Service procedure Maintenance When required Clean radiator fins and cooler fins z Never open the engine side cover when the engine is running. Stop the engine completely before starting the cleaning operation. z If compressed air, pressurized water, or steam hits your body directly, or causes dirt to fly, it may lead to per- sonal injury. Always wear safety glasses, dust mask, or other protective equipment. Clean the radiator if mud or dirt is stuck to it. 1. Open rear grill (1). 2. Move lever (3) of fan guard (2) down to release the lock, then open fan guard (2). 3. Use compressed air to clean the mud, dust, and leaves from the radiator and oil cooler fins.
Steam or water may be used instead of compressed air. 3 1 NOTE If the steam jet nozzle is brought too close to the radiator fins, it may damage the fins, so keep the nozzle a suitable distance away from the fins when cleaning. 2 GK032256 4. Check the rubber hose. Replace with a new one if the hose is found to have cracks or to be hardened by ageing. Also, check hose clamps for looseness. 5. After cleaning, close fan guard (2), apply the lock, then close rear grill (1). Check electrical intake air heater Before the start of the cold season (once a year), contact your Komatsu distributor to have the electrical intake air heater checked for dirt or disconnections.
WA150-5H – VEAM934100 4-33 WARNING WARNING