Analysis of the fault of the forklift hitch

For the use of forklifts, we must pay attention to avoid accidents. If the forklift's gear shift fails, how to analyze it? The first thing I learned is that when the input shaft of the forklift's main reducer is rotated by hand, it is found that there is a free rotation gap of nearly 30 degrees. The main reducer can be removed, and its clearance is measured to be 0.65mm. Pay attention to adjusting the position of the bevel teeth so that the tooth engagement clearance between the bevel gear and the driving bevel gear is 0.35mm. After reassembly, test the machine, there is still the impact of the gear shift and the abnormal noise is made, the degree is only slightly lighter than the original, so the fault is still the same, it is necessary to remove the drive shaft, so that the transmission is in an unloaded state, start the engine, Repeatedly carry out the gear shifting, shifting and upshifting tests, and it is found that the abnormal noise generated at the moment of shifting gears still exists, and the transmission has obvious vibration. The transmission should be disassembled, cleaned, and inspected. It is found that the tapered roller bearings of the main and driven shafts of the reverse gear and forward gear clutches are loose. Adjust the bearing to the appropriate clearance by adding or subtracting shims, and reassemble the test machine. , the gear shock.
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