[Shrewcub]

I put a few squirts of grease and gear oil in mine since this is the first time I have ever used it. I will take everything apart this summer to clean all the old grease out. It doesn't take very long to take everything apart. It's really a very simple machine.

If you put grease on your drill bits and tap very few shavings will get inside. Even if a few did get in, it's not a hydraulic system in there. I would say to be on the safe side take the boxes apart at least every 10 years or so and clean and repack.

Edit: To check the level stick a zip tie in, if it comes out dry, add lube.