Excavator maintenance taboo 1, with emery cloth polishing pad for some of the less experienced repairman, scraping the higher a difficult task, due to the scraping technique is difficult to master, so the pad is not easy to meet the technical requirements. For this reason, some people in the replacement bearing, in order to increase the contact area between bearing and crankshaft grinding it with emery cloth instead of scraping. This method is highly undesirable in actual maintenance, as abrasive emery cloth on a hard, while bearing alloy was softer, so that when sanding grit is easily embedded in the alloy, while the diesel engine will accelerate wear journal Tai'an Used Mini excavators prices, shorten the life of the crankshaft. 2, bolts too tightly construction machinery in the disassembly process, many parts of bolt torque requirements are provisions, such as gear box, cylinder heads, wheels, links and bridges parts before tightening torque specification has special provisions, must not arbitrarily change. But many people mistakenly believe that the use of some tight would be safer, but over-tighten the screws or bolts may cause breakage, may also be due to the thread of the slider and cause malfunctions. 3, tire pressure is too high wheel construction machinery tire inflation pressure is an important factor in determining their life and work efficiency. Tire pressure is too high or too low will affect their life, while not conducive to safe driving, especially in the hot summer months. Inflatable scientific criteria should be: a standard tire pressure as a reference, as the temperature changes, adjust the tire pressure slightly fishes. For example: in summer and winter should be lower than 5% -7%, in consideration of the high summer temperatures, the gas is heated, the pressure increased, contrary winter must meet the standard pressure or slightly below.泰安嘉 and Heavy Machinery Co., Ltd. In order to improve the guide wheel supporting device after the repair durability, we try to take advantage of this ability to complete the conversion work unit maintenance guide wheels. The main approach is: modified guide wheel support and lubrication Tai'an used mini excavator price, instead of sliding bearings with rolling bearings with grease instead of gear oil. 1. The conversion program (1) Select the appropriate bearing (2) Production of bearing (3) Make the flange (4) to improve the structure of the guide wheel seat 2. The guide wheel assembly in accordance with the above scheme will later be the guide wheel parts manufacture assembly, the assembly can be seen from the guide wheel hub bearing and guide the formation of the middle of the annular space, the space available to store the grease. Machined on the guide axle grease, oil Road Tai'an used mini excavator price, install a grease fitting on one end of the guide shaft, the other end to a screw plug. When greasing need to unscrew the screw plug, to expel the old grease. When mounting flanges should evenly coated with a layer of sealant on the mating surfaces of the flange and the guide wheel bearing end surface, then tighten the bolts. 3. Since the guide wheel balancing test assembly is based on the conversion of the old pieces, error uneven wear and the center hole of the old process when the guide wheel guide wheel center of gravity may cause deviation after assembly, leading to loss of guide wheel operation steady, shorten bearing life. So after assembly is completed, there is a need for balancing test. Due to constraints, we take a simple test method is about two guide rollers are fixed to the base 2 stand Tai'an used mini excavator price, the guide wheels dangling, and then repeatedly rotating guide wheel, according to the rotation and stop the movement of determining the center of gravity position, and then surfacing again guided round the outer edge of the center of gravity can be corrected. After several months of use and observation, the modified guide wheels flexible operation, reliable performance, easy maintenance, modification programs have been successful. The new mini-excavators and heavy price _ Kerry (Online) _ Tai'an mini excavator price offered by 泰安嘉 and Heavy Machinery Co., Ltd .. The new mini-excavators and heavy price _ Kerry (Online) _ Tai'an mini excavator price Taian Jia and Heavy Machinery Co., Ltd. (www.tajhzg.com/) this year introduced a new upgrade, the above picture is for reference only, please dial this page Phone or pictures on obtain the latest information, contact: Xing Jingli.