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Construction machinery maintenance measures (1 το διαβάζουν τώρα) (1) Επισκέπτες
Πήγαινε στο Τέλος Απάντηση στο θέμα Αγαπημένο/α:0
ΘΕΜΑ: Construction machinery maintenance measures
#26049
qizhenapp (Μέλος)
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Δημοσιεύσεις: 1922
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Construction machinery maintenance measures 1 Month, 1 Week ago Κarma: 0  
<P>Maintenance of construction machinery, some maintenance personnel do not understand the maintenance should pay attention to some of the problems, resulting in disassembly often "habitual" error, affecting the quality of mechanical maintenance. Such as hot car disassembly engine cylinder head, easy to lead to deformation of the cylinder head crack; install the piston pin, do not heat the piston and directly to the piston pin into the pin hole, resulting in increased piston deformation, oval increase; Connecting rod tile back plus copper pad or paper pad, easy to plug the oil path, resulting in burning tile bearing axis accident; in the maintenance of diesel engine excessive scraping bearing, bearing surface friction alloy layer was scraped, resulting in bearing steel back and crank friction The use of tensioner, hard knock hard knock, easily lead to deformation or damage parts; unsealed new piston, cylinder, nozzle even pieces, plunger, etc., such as the use of tension parts, Parts, the use of fire parts on the surface of the storage of oil or wax quality, so that parts performance changes, is not conducive to the use of parts.</P>
<P>Maintenance of construction machinery, the correct removal of parts of the surface of the oil, impurities to improve the quality of repair, extend the service life of machinery is of great significance. Due to do not pay attention to strengthen the cleaning parts, cleaning agent selection is unreasonable, improper cleaning methods, resulting in early wear and tear parts, corrosive damage to the phenomenon, in some repair units also occur. If the cylinder block is not completely removed, the piston ring groove carbon deposition, bolt hole debris, hydraulic components within the sand, resulting in insufficient bolt torque, piston ring easy to break, cylinder pad ablation, early wear of hydraulic components.</P>
<p>In the overhaul construction machinery, do not pay attention to remove the diesel filter, oil filter, hydraulic oil filter, diesel water jacket, radiator surface, lubricating oil, etc. accumulation of oil or impurities, so that maintenance work is not complete , To reduce the construction machinery trouble-free operation time. Repair staff in the cleaning parts, a properly selected cleaning agent. The cleaning of various parts, should be based on their different requirements for cleanliness, the correct use of different cleaning agents; Second, to prevent corrosion of parts, rust. In order to ensure the quality of parts, should prevent corrosion of parts and parts rust, especially for precision parts are not allowed to have any degree of corrosion or rust. Therefore, in the cleaning, can not use alkaline cleaning agents (especially strong alkali cleaning agent) cleaning aluminum alloy parts (such as aluminum alloy cylinder head, etc.), but can not use strong acid cleaning agent cleaning copper parts (such as thermostat Main valve), in order to minimize the corrosion of parts; Third, different parts should be classified cleaning. Aluminum parts, copper parts should not be placed in alkaline or acidic cleaning agent in a cleaning, rubber parts and other steel parts should not be placed in the steam, diesel and acid, alkaline cleaning agent with cleaning.</p>


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