TROUBLESHOOTING *) These measures must be performed by your local Komatsu dealer. 6-6 ENGINE (CONTINUED) FAULT CAUSES REMEDY Temporarily, combustion sounds like breathing Injection nozzles defective *) Replace injection nozzles Unusual combustion noise Wrong fuel Use prescribed fuel Engine temperature too high (engine overheated) Allow engine to cool down See "Engine - Coolant temperature indicator" Unusual mechanical noise Defective silencer *) Replace silencer Tappet clearance too wide *) Adjust tappet clearance Engine does not start or stops during operation and the top LED of the fuel supply indicator is flashing Fuel tank empty Refill fuel and bleed fuel system Warning light air filter:
warning light air filter is on when engine is running Air filter of filter insert dirty Clean or replace filter insert of air filter