TROUBLESHOOTING ENGINE *) These measures must be performed by your local Komatsu dealer. 6-4 ENGINE FAULT CAUSES REMEDY Warning light engine oil pressure: with the engine running the warning light is on and an acoustic alarm signal is given Oil level in engine too low Top up engine oil Engine oil filter (filter cartridge) dirty Replace engine oil filter (filter car- tridge) Lines or hoses of engine lubricating system damaged Check lines and hoses (visual check: oil leaks) *) Replace defective lines and hoses Line or hose connections of engine lubricating system leaky Check line and hose connections (visual check:
oil leaks) *) Repair leaky line and hose connections Oil pressure switch without function *) Check function of oil pressure switch; replace defective oil pressure switch Vapour is let off at the pressure valve of the radiator cap Coolant level in radiator too low Top up coolant (ensure correct mixing ratio) Coolant level too low Leaks in the cooling system Check lines and hoses (visual check: coolant leaks) *) Replace defective lines and hoses