Kitchen Faucet ,Pull Down Kitchen Faucet,Delta Faucets Kitchen,Menards Kitchen Faucets WENZHOU HUAGUAN SANITARY WARE CO,.LTD , https://www.wzhuaguan.com
Analysis and Maintenance of Common Faults of W4-60 Excavator Air Pump
W4-60 type wheeled excavator equipped with SKI-82-type pump, if used improperly maintained, often there will be some failure, affecting the normal use of excavators. 1 . Common Failure Analysis (l) Slump caused by the air pump shaking reasons: â‘ air pump is installed by the five bolts fixed to the pump frame, of which two longer. When installing these 2 long bolts, set 2 support sleeves on the bolts so that the air pump can be leveled to reduce vibration. But the new air pump does not take this casing, but the pump is fixed on the control machine when the installed two casing, and some mechanics in the maintenance, replacement pump neglected to install this casing, so that after the installation of the pump only 3 short Bolt in the fixed role, resulting in instability of the pump, vibration, resulting in damage to the pump due to shaking; In addition, due to the narrow bolt installation place, the installation of the bolt is very laborious, so some repairmen do not put all the bolts are installed, the same can be So that the air pump due to loose and unstable shaking. â‘¡ air pump bearing damage. This type of air pump has a total of three bearings: the connecting rod bearing (205); close to the pulley bearing (50207), the bearing with a circlip to prevent the bearing prolapse; ). 50207 and 207 bearings are used to support the air pump crankshaft, when the 50207 bearing is loose due to vibration and other reasons, the bearing will come off, so that the crankshaft loses support on one side, Of the 50207 and 207 bearings in a damaged, the pump crankshaft that is, the support is lost, the operation is not smooth, resulting in a belt pulley Akira; If the connecting rod bearing 205 is damaged, can lead to the piston rod assembly and the connecting rod journal occurs Impact, so that increased vibration of the crankshaft, leading to belt pulley and air pump shaking. (2) Leaking oil pump leaks are due to: â‘ base and the pump housing joint leakage. Between the two sealed by gaskets, the use of large vibration due to the pump, easy to connect the bolts loose, which leak out from the base of the Department. â‘¡ oil seal damage oil spills. An oil seal (model number: PG25x45x10) at the belt reel shaft can cause the seal to fail due to damage to the oil seal; therefore, oil is thrown outward from the belt reel shaft. (3) bearing damage This type of pump on a total of three ball bearings, the use of the main reasons for damage: â‘ pump is not firmly fixed, vibration, thus increasing the additional load bearing. â‘¡ poor lubrication, which is the main reason for bearing damage, the type of pump bottom shell oil is added (the general engine oil pan oil pump and the oil is the same, it is not necessary to single fuel), some drivers are starting The engine does not check the pump before the amount of oil, resulting in lack of oil pump, bearing ablation. (4) Belt plate rupture Belt plate rupture is also a common pump failure, mainly due to: â‘ air pump is not firmly fixed, belt tray in operation due to excessive shaking and fracture. â‘¡ air pump belt is too tight, so that the belt reel to withstand excessive radial load and fracture. â‘¢ lack of oil pump bottom shell oil, easy to bearing and crank crank air pump together, but this time the engine power is still through the belt drive air pump belt continued to rotate, so you can pull off the belt. (5) belt damage There are two air pump belts (Model B1245), easy to use in the cause of damage are: â‘ use only installed a belt, or two old and new, the length of the difference, resulting in a single belt to withstand Large load or uneven belt damage. â‘¡ air pump leak oil, oil was thrown on the belt, causing the belt by the corrosion and fracture. â‘¢ individual belt quality is poor, natural damage soon after use. (6) early wear and tear, resulting in inadequate air pressure some pump soon appeared piston ring, cylinder serious wear and tear, resulting in lack of pressure. The main reason is: into the air pump is not clean air, filling the poor quality of oil or replace the oil is not timely. The air pump with an air filter, damaged if not repaired in time, can lead to air valves and piston rings and other parts due to unclean intake and early wear and tear; prolonged non-replacement of oil, oil deterioration or excessive impurities , Can also lead to early wear and tear on the components on the pump. 2 . Use and maintenance instructions (l) When installing the pump, make sure the pump fixed firmly. If the installation of the pump long bolt lack of casing, the choice of starter armature shaft copper sleeve, miniature car connecting rod copper sleeve or homemade iron instead. (2) add oil in time. Before each engine start to check the amount of oil in the pump, add oil in a timely manner, the type of oil used to be used with the engine the same, to prevent air pump bearings due to lack of oil damage. (3) Regularly change the oil and clean the pump sump. Must be regularly cleaned oil pan oil chamber, the general engine should be cleaned once every 100h work, not just add oil or replace the oil, so that the impurities in the oil pan can not be cleaned, the use of oil will not deteriorate after a long time, Not achieve the purpose of oil change. (4) Regularly check the tightness of the belt. When the belt is too loose or the difference between the length of the two belts is larger, it should be promptly adjusted or replaced, and not only use a single belt. Atlas air compressor parts (5) to maintain air pump air filter intact. Regular maintenance of air filters, air filters if damage should be promptly repaired, must not use air filters. (6) timely repair pump leak. Regularly tighten the base and the pump casing connection bolts, and timely replacement of the damaged seal to prevent the belt early damage.