The drive box of the Chongqing metering pump LJ4-MF makes knocking noises; seeking advice
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The LJ4-MF metering pump, which has been in use for 8 years, is now producing a rhythmic clicking sound from its drive box. It has never been serviced before; I would appreciate advice from those who have experience servicing such metering pumps on what aspects should be checked first. Since the parts are not ready yet, the disassembly has not begun in full.
Since there are abnormal noises coming from the transmission box, go through the components inside it using the drawings as a reference, and prepare some spare parts first
There should be targeted preparation of accessories; if you prepare a complete set of components for the gearbox, it’s better to just buy a new pump.
If it’s not a bearing replacement but rather the replacement of some other part, the cost of repairs will be pretty much the same as the cost of buying a new one