How to solve the RV worm reducer fever and oil spills

vertical gear reducer in order to improve efficiency, the use of non-ferrous metals generally do worm, the worm is using hard steel, as it is sliding friction drive, during operation, it will have a higher heat, so that the various parts and seals reducer the difference between the thermal expansion, thereby creating a gap with the surface, while the oil thinning due to temperature rise, likely to cause leaks. There are four main reasons, first, the material mix is ​​reasonable, the second is the quality of the engagement surface friction surface, and the third is the lubricant of choice, add the amount is correct, Fourth, assembly quality and the environment.
Workaround: to ensure the quality of assembly. In order to ensure the quality of assembly, when the plant later and made a number of special tools to remove and install reducer worm, worm, bearings, gears and other components, try to avoid using a hammer and other tools to directly tap; when changing gears, worm, as far as possible selection of original parts and be replaced in pairs; assembly output shaft, pay attention to tolerances, D≤50mm, using H7 / k6, D> 50mm, using H7 / m6, while the use of anti-adhesive or red lead oil, protect the hollow axis, to prevent wear rust, with the area to prevent dirt and difficult to disassemble for maintenance.