A, Baotou beiben fittings engine oil sump water phenomenon
(1) the cooling water is not normally reduced.
(2) oil pressure drop. If the oil pressure is reduced by 100 ~ 200kPa at the same speed, the reason should be checked in time.
(3) engine or static continuous working hours after the oil bottom shell of the oil level increased significantly, the amount of oil bujianfanzeng, sometimes from the cursor foot overflow.
(4) the crankcase and respirator in the fog, sometimes at the mouth of water and produce respirator.
(5) oil in the early stage of the oil in the water droplets, a long time, then the oil will become milky white.
(6) the cooling water “boil” or “bubble” phenomenon. The cylinder liner is cracked and the water enters the oil pan.
Two, Baotou beiben heavy duty truck accessories because of the engine inlet
(1) the sealing ring of the cylinder sleeve is not good, and the leakage is not good.
(2) the oil cooler is damaged, and the part of the cooling water is infiltrated into the lubricating system.
(3) the engine cooling water pump seal and oil seal aging or damaged, the cooling water will enter the lubrication system.
(4) the cylinder liner has a crack or cylinder liner for “cavitation” serious and produce small holes, cooling water will penetrate into the cylinder, into the oil sump.
(5) there is a crack in the cylinder head, cooling water directly into the cylinder, flowing into the bottom of the oil tank.
(6) technological hole bulkhead top of cylinder head for vibration and loose, the cooling water push rod hole into the oil pan.
(7) the tappet body interior casting blisters, the cooling water in the water jacket is seeping from the sand eyes, the tappet chamber back into the oil pan, the fault is difficult to check.
(8) the engine cylinder pad is washed out after the cooling water jacket is communicated, directly into the cylinder into the oil sump.
(9) the seal ring between the cylinder head and the cylinder is damaged. If the cylinder head bolts loose, also can make the cooling water into the cylinder.
(10) for dry cylinder liner, if the body because of “cavitation” serious, cooling water into the cylinder by the body, cylinder liner due to uneven heating and damage, cooling water through the cylinder into the oil sump.
(11) the air compressor attached to some engines is cooled by cooling water, and the lubricating oil is communicated with the lubricating oil of the engine. If the air compressor has some faults, it will make the cooling water flow into the bottom shell.
Three, Baotou beiben heavy duty truck accessories processing method of engine oil sump water
1, cylinder liner seal ring damage to determine whether the cylinder liner seal is damaged, in two cases:
(1) for wet cylinder liner engine: the first engine oil pan removed, and will fill the water tank, then found in the engine under the external wall of the cylinder liner if there is water, is that the oil sump liner seal damage due to water.
(2) for dry liner: first engine cylinder gasket from the engine block and remove the check cylinder gasket between the channel and the engine oil channel section, if found to have traces of wet proof, oil sump liner seal damage due to water.
Repair method: repair or replace the cylinder liner seal ring.
2, oil cooler damage
Remove the oil cooler to check the oil outlet with plastic Buzha tight, and then into the water, but the oil inlet to the surface of the water, with compressed air through the inlet to the oil cooler in the air slowly, if there are bubbles, that the oil cooler is damaged, the timely repair or replacement.
3, the cooling water pump water seal and seal aging or damaged
Check, repair or replace parts or water pump.
4 cylinder or cylinder head cracks or holes
Cylinder or cylinder cover generally is not crack, cracks are caused by human factors. As a long time or stop when the temperature drops, there is no time to give the engine drain, to be protected; or when the engine temperature is too high, splashing water to the engine body, these are easy to cause the crack of engine cylinder or cylinder head, resulting in waterways and oil exchange caused by water leakage.
Methods: to repair welding repair repair.
5, the cooling water flows into the oil sump push rod hole
The replacement of water plugging hole bulkhead or tighten the cylinder head at the top of the.
6, cylinder head bolt loose
Check and tighten bolts and replace bolts if necessary.
7, the cause of the air compressor leakage
Check the water cooling system of air compressor to repair the fault.