Trouble shooting table 14 Coolant temperature too high, coolant loss D Coolant level too low D Air in coolant circuit D Proportion of anti-freeze / anticorrosion agent too high D Raw water supply clogged D Raw water supply insufficient D Cap with working valves on expansion tank defective, leaky D Thermostat in closed position blocked D Heat exchanger heavily contaminated, pipe group coated with foreign matter D V-belt for water pump drive not correctly tensioned (slipping) D Water pump leaky, defective (bearing damage) D Coolant circuit clogged by foreign matter D Thermostat jammed in ”shut” position D See “Fuels, Lubricants ...” D Check inlet orifice D Impeller worn.
Measure delivery of raw water pump and vacuum at inlet Lube oil pressure varies/too low D Oil level in oil pan too low D Oil level in oil pan too high D Max. inclination exceeded D Engine temperature too high D Oil viscosity unsuitable (viscosity too low) D Oil in oil pan too thin (mixed with con- densation or fuel) D Heavy bearing wear D Oil pump gears heavily worn D Safety valve in oil circuit defective (does not shut, spring fatigued or broken) D Oil pressure gauge defective D Dipstick marked correctly?
See Operator’s Manual D See “Fuels, Lubricants ...” Lub oil pressure too high D Engine cold D Oil viscosity unsuitable (viscosity too high) D Safety valve in oil circuit defective (does not open) D Oil pipes/oil galleries clogged D Oil pressure gauge defective D See “Fuels, Lubricants ...” Lube oil consumption too high D Leaks in the lube oil circuit, particularly at the turbocharger and oil cooler D Oil level in oil pan too high D Lube oil quality does not satisfy regula- tions D Turbocharger wear D Piston rings heavily worn D Valve guides heavily worn D See “Fuels, Lubricants ...” D Measure play of rotor