How to use thermometer indicating value judgement lubrication system failure

Today, jiangsu thermometer factory technical personnel of the main belt you know how to through the oil thermometer indicating value judgement lubrication system failure. 3 e7 magnetic flap | | glass thermometer thermometer floating ball | | glass thermometer thermometer two-color thermometer

in the first place, check, carefully listening to the engine crankcase part first presence of bearing clearance is too large when what happened & other; Woo & throughout; Sound, combining bearing assembly and usage, make a preliminary judgment. Then under the speed of the engine flameout, oil hit a fine filter cover shell with the hand, immediately for vibrating sensation, and listen to the rotor of the fine filter have gone without continue rotating & other Hiss & throughout; The sound. Without inertia vibration sense or continue to rotate under the action of sound, could be oil pump pump oil shortage or pressure limiting valve and oil return valve inside leaking badly. Then, check the oil viscosity. Take out oil feet, observe the adhesion on the oil dipstick oil with and without bubble, if any, that the oil mixed with water. Because the water jacket resistance hydrosphere leakage or fracture and cylinder liner cavitation through. The ullage rule of oil drops on hand a little, with your index finger and thumb lay still, if the oil is not greasy, feel or smell of diesel, indicates that the oil by diesel oil dilution. Diesel fuel from the tank, due to the push rod and the guide hole wear or rubber seal failure, after the oil transfer pump chamber diesel along the cylinder wall into the crankcase. Diesel may also come from the oil transfer pump, or due to push rod and the guide hole wear rubber seal failure, after the oil transfer pump chamber diesel with the push rod from the slit into the high pressure oil pump pump body lower chamber, and then through the camshaft bearings before and timing gear chamber into the crankcase. If neither water nor diesel engine oil, but the apparent viscosity is not enough, you should consider is the oil temperature is too high metamorphic or oil brand or quality caused by unsuitable. 3 e7 magnetic flap | | glass thermometer thermometer floating ball | | glass thermometer thermometer two-color thermometer

second, engine work, oil pressure is in commonly 150 ~ 350 kpa pressure range. If the oil thermometer indicator of less than 98 kpa pressure value, can be regarded as the oil pressure is too low, should immediately stop check, otherwise easy to cause excessive wear parts, even happen & other; Tile burning holding shaft & throughout; And other major mechanical failure. 3 e7 magnetic flap | | glass thermometer thermometer floating ball | | glass thermometer thermometer two-color thermometer

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in the end, the thermometer factory in jiangsu science and technology staff analysis, low oil pressure of the main reasons are: ( 1) The oil viscosity is too low; ( 2) The oil collection filter mesh or oil filters filter clogging; ( 3) Pressure limiting valve and oil return valve spring of elastic weakened or broken, or valve joint face seal is lax, lead to the oil pressure; ( 4) Main bearing and connecting rod bearing clearance is too large; ( 5) Oil pump working poor. 3 e7 magnetic flap | | glass thermometer thermometer floating ball | | glass thermometer thermometer two-color thermometer

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