Repairing diesel engine accordingly

Repairing diesel engine accordingly
Diesel engine is composed of nearly one hundred parts. When diesel engine parts are dismantled, it should be well placed in order, and good numbers, and then carefully clean the parts and identification. For repair and replacement parts do not need, must by in situ loading complex. If the chaotic disintegration of parts stacked together, will destroy the engine re-installed after the normal work performance. So, diesel engine spare parts which must by in situ assembly of it?
1 Vice plunger, delivery valve, three dual nozzle with a very sophisticated piece. For example, the fuel pump plunger and the plunger with the gap is only 0.001? 0.003 mm, and after strict matching, it can not be interchanged. Otherwise, not because the gap is too small and occurred stuck, because the gap is too large and lose performance.
2 pistons, piston rings and cylinder diesel engine after running, the three received good cooperation between the gap, so in the disassembly process, the three can not interchangeable. If you need replacement parts, should be complete replacement, not only the replacement of the piston without replacing the liner, or just replace the cylinder without replacing the piston.
3 bearing and crankshaft journal bearing clearance in order to remain the same, the original assembly of the first in a few crankshaft journal bearing on the separation must be installed after the road back to the journal. Not only that, under the tiles on the tile and can not be transposed.
4 folders with air lock valve stem lock folder This is because the gas, the valve rod and valve spring seat among the small taper alone with the activity to take together. If it is between the exchange, uneven wear or taper once the parts are inconsistent, likely to cause the valve loose, fall into the cylinder valve, and cause major mechanical accident.
5 with the valve push rod and a moving column if a putter with the moving column with another pair, because of the putter head and the ball moving with the ball and socket wear columns are not identical, so putting sometimes fall ball and socket of the deep, sometimes shallow nest fell on the ball, thus causing the valve clearance has been a good tune changes, and even lead to valve hit the piston. At the same time, the weaker intensity of shaking inevitably broken hip. So both parts removed from the body to the future, to do the sign storage, re-assembly must be in original position unchanged.
6 gasket installed in the plane between the two parts of the gasket is pressed, they and the micro-mechanical uneven surface at the match, and thus play a role in sealing. So each time re-installed, you should insist on as much as possible with mechanical seals Yi occlusal surface of the same, so ability to effectively prevent leakage. If you can not do this, a new gasket should be replaced, not reused.