Summary:...
First, remove the belt cover, V-belt, pulley, remove the coupling, bolts, and hang down the motor. Remove the bolts on both ends of the worm cover and the split surface of the reducer, lift the upper cover of the casing and place it on the rubber plate to prevent damage to the middle split surface, clean the top cover, and check whether there is oil leakage at the fastening bolts.
Secondly, disassemble the lubrication system, disassemble the worm gear lock nut, remove the worm gear with special tools, and check the meshing condition of the worm gear and the worm, including the contact area, position, wear, etc.
Then, remove the oil seal, clean the chassis, and check and handle the middle split surface. Check the shaft journal wear can be repaired by spraying, brushing, and electroplating after grinding. If the keyway on the shaft is damaged, the keyway can be re-machined at a phase of 120° from the original keyway. Check the bearings and couplings of the vertical gear reduction motor for wear, pitting, and serious gluing. Replace or use the method of correcting the worm gear to repair the worm gear and reconfigure the worm. The tooth surfaces of worm gears and worms are slightly glued, pitted, and individual tooth surfaces are defective, which can be repaired by milling, scraping and grinding after repair welding.
Before assembling the geared motor, clean and deburr the parts, and check the size, geometry, accuracy, surface roughness, etc. according to the requirements of the drawing. Lubricating oil should be applied to the mating surfaces of the worm gear and the shaft, and the bearing and the shaft before pressing. If the coupling is assembled, the worm wheel ring should be press-fitted on the hub and tightened. Install the coupling on the shaft.
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