Re: First maintenance on 422....hidden \"zerk\"
I think the ZERK they are concerned about is the one facing the ground under the bottom center link. That one could get snapped off if you get over a log or large rock.
My Pt 425 has two zerks on the loader arms, three on the main links and 3 on the treadle assembly.
One lubrication issue I have concerns with is the sleeves that have a bolt going through them and then the sleeve go through a swivel eye, for example, the point where the loader arms attach to the unit. The swivel eye gets lube every 8 hours and I spray the ends of the sleeves, but I doubt much lube can penetrate through the entire length of the sleeve to surround the bolt. Anyone else have this concern?
I was wondering if a small diameter hole was drilled down the center of the bolt, then a cross hole was drilled about the middle of where the sleeve would be. This would create a grease passage. I could then enlarge the small hole end and tap a grease zeerk in it. Wonder if the work would be worth it VS just spraying the heck out of it every 8 hours. Also wonder if it would significantly weaken the bolt. I could try it on a spare bolt, just to see how hard it would be. Wouldn't cost that much to try. Just the cost of a bolt, grease zerk, two drill bits and a tap.
