Diesel merits of the old method of identifying

Diesel old transactions, how to identify their advantages and disadvantages? According to the theoretical and practical experience, can take a question, two, three trial to test the method of identifying the main.
Asked an old diesel engine asked the purchase, use and sale now for about the past of repair, replacement of the main components which, asked about the use of what is the problem, the old diesel engine to a more comprehensive understanding of the system.
Second look at the signs and the old diesel engine appearance. Which it is the factory, when the factory, how long from now; look at the appearance of the paint is falling out of the defects even whether, it be eliminated, and other models. From the signs and to determine the appearance of the old diesel engine Deciding New or Old.
Third trial to test machine. Shake to the crankshaft through, Pandong flywheel, starter machine, the old diesel engine for careful inspection. Check specific steps are:
1. Shake to the crankshaft, the oil nozzle. Nozzle such as a burst of voices, and the nozzle of the plunger performance is fairly good, if not round indoor "uproar" abnormal noise, wear the gear is not serious.
2. Bandong flywheel from top to bottom, without ringing the crankshaft axis stem and the clearance between the bearing little.
3. Pull to the flywheel so that the only point of the Pistons close, and then sloshing around flywheel, in the absence of "Data" Sound, the link between the axis of the stem and tile wear is not serious.
4. So that the cylinder decompression, shake to the crankshaft, when the removal of decompression, as the Pistons reacted large, rapidly rotating flywheel, the cylinder, piston, the piston ring wear small. Shake to the crankshaft, oil pressure gauge indicator should not be lower than 1 or Red Label instructions oil rising quickly, under pressure should be laborious.
5. Starting machines. Such as easy start, colorless or smoke Jianhui, speed stability without noise, the old diesel engine technology is good.
Through the above methods of the old diesel engine identification, can generally be Deciding New or Old and the pros and cons to tell. This old diesel price has also more accurate.