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NINJA EX250R (1987)
Инструкция по эксплуатации Страница: 102

Kawasaki NINJA EX250R (1987) [102/248] Engine lubrication system 6 9

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ENGINE LUBRICATION SYSTEM 6 9 lf the oil pump and relief valve arc not at fault inspect the rest of the lubrication system OH Pump Inspection Disassemble the oil pump Visually inspect the oil pump body outer and inner rotors and covers If there is any damage or uneven wear replace the oil pump as an assembly A Oil Pressure Gauge 57001 164 B Adapter 57001 1188 C Plug Start the engine and read the oil pressure gauge while running the engine at various speeds A normal relief valve keeps the maximum oil pressure between the specified values Relief Valve Opening Pressure 430 590 kPa 4 4 6 0 kg cm2 63 85 psi Stop the engine Remove the oil pressure gauge and adapter O nstall the oil passage plug lf the reading exceeds the standard by very much the relief valve is stuck in its closed position If the reading is much lower than the standard the relief valve may be stuck open or there may be other damage in the lubrication system Stop the engine immediately and find the cause Measure the oil pressure at normal operating tem perature Warm up the engine and then stop the engine Install the oil pressure gauge and adapter as shown above WARMING C f the oil passage plug is removed while the engine is warm hot engine oil will drain through the oil passage take care against burns Start the engine again oRun the engine at the specified speed and read the oil pressure gauge If the oil pressure is significantly below the specifi cation inspect the oil pump and relief valve Oil Pressure More than 345 kPa 3 5 kg cm2 50 psi 4 000 r min rpm 90 C 194 F of oil temp Relief Valve Inspection Remove the relief valve Check to see if the steel ball inside the valve sides smoothly when pushing it in with a wooden or other soft rod and sec if it comes back to its seat by valve spring pressure NOTE inspect the valve in its assembled state Disassembly and assembly may change the valve performance If any rough spots arc found during above inspection wash the valve clean with a high flash point solvent and blow out any foreign particles that may be in the valve with compressed air WARNING Clean the parts in a wall ventilated area and take care that there it no spark or flame anywhere near the working area Because of the danger of highly flam mable liquids do not use gasoline or low flash point solvents If cleaning does not solve the problem replace the relief valve as an assembly The relief valve is precision made with no allowance fore replacement of individual parts

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