and whether driving device is flexible.
5. Seasonal maintenance
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In winter, use cooling system for diesel engine. Please replace antifreeze coolant once a year. It's necessary to drain
off it for a long time parking if not using antifreeze coolant.
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Use lubrication which is only for winter in winter.
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Change concentration of battery electrolyte with season changing.
Technical maintenance of lubrication system
1. Choose lubrication for diesel engine lubrication system according to surrounding temperature.
Use SF diesel engine oil according with GB11122.
2. Measurement of oil level.
Oil level of oil sump is measured by oil scale mounted on the left side of diesel engine. When measuring, park the vehi
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cle in the horizontal position and stop operating the diesel. Pull out the oil scale after the oil level stopping rocking, use
cleaning cloth to wrap away oil on oil scale and then insert the oil scale into oil level. Oil scale should be mounted on the
right place, then, pull out the oil scale to check the oil level.
There are two holes on oil scale, oil level should not be lower than the holes below. If not, supply of oil will stop. It's im
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proper to have oil excessive, for crankpin of crankshaft will strike the oil level in this situation to form excessive oil mist
and splash oil drop and cause carbon deposit of piston and combustion chamber carbon deposit. At the same time,
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Note:
mixing different oil is forbidden.
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4. Class-three maintenance
Class-three maintenance focuses on assembly dissembling, cleaning, dismantling, adjustment and hidden trouble re
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moval. After class-two maintenance, add the following maintenance contents every 1000h (30000-40000km)
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Dismantle and clean diesel engine to remove carbon deposit, oily dirt and water dirt.
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Check wear& tear of valve, push rod and rocket contact area. Repair and replace them if necessary.
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Check wear& tear of piston ring, cylinder jacket, connecting rod small end bushing and connecting rod bearing offset.
Replace them if necessary.
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Check wear& tear of main bearing liner and thrust plate.
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Check wear& tear of drive mechanism and driving gear meshing surface as well as measuring meshing clearance.
Repair and replace them if necessary.
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Check wear& tear of inlet valve& outlet valve and inlet valve seat & outlet valve seat. Repair, lap and test leakage. Re
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place them if necessary.
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Check injector and lap or replace the injector nozzle pair if necessary. Use the ultrasonic wave to clean the carbon
deposit when install the used fuel-injection nozzle, prohibit using silk to wipe or using cutter to shaving, prevent damage
the fuel-injection nozzle and clog the injection hole.
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Check oil pump and dismantle or measure the parts that are easy to damage and adjust.
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Check cylinder gasket and inlet pipe shim& outlet pipe shim. If finding damaged, replace them.
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Check supercharger and clean .Wear& tear of supercharger gear and oil seal and replace if necessary.
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Check generator and starter, clean parts and gear and add new lubrication after drying. Check wear& tear of starter
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2.8L Series Diesel Engine
