When the eccentric bushing has severe cracks, or the gap between the main shaft and the inner hole of the eccentric sleeve is 1.5 to 2 times larger than the standard gap during assembly, it needs to be repaired and replaced. When the tooth thickness of the large and small bevel gears is 25% to 30%, the gear needs to be replaced.
When maintenance, should first release the oil, and an eccentric bushing hanging from the upper (movable beam and cone are removed), the alloy Pap tightness check on the eccentric bushing, sleeve and rack steel inspection, inspection time Note percussion hammer or copper plumbing.
When installing, be careful that the contact surfaces must be smooth, clean, and the burrs and scratches on the babbitt sleeve should be trimmed. The oil sump is cleaned and ground and deepened as necessary. Finally, the lower bottom cover must be tightly sealed to prevent oil leakage. After the eccentric sleeve is installed, the outer end faces of the two gears must be flush.
The gear meshing clearance should be measured whether after disassembly or installation. The gear wear law can be known by the gap record before disassembly. If the gap is too large or too small, adjust it by increasing or decreasing the gasket at the eccentric bushing.
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