This week I got a little brake this week from winter services to do some warranty work. It actually fit in quite well with school because it was hydraulic cylinders. Basically what it was is the front steer cylinders on the 7420 have always had a problem with toe in or out. In the past years there was a toe switch on the dash that controlled only on of the cylinders so you could line up the wheels again. Last year they changed it so that when you turn the wheels completely to one direction it would open a dump valve on the cylinder that would dead head first allowing the other cylinder to catch up to it so they would be correctly aligned. The problem that came up though is that some of the cylinders had a different stroke. To solve this OXBO gave us kits that we would replace the rod with one that had a thread on eye. We could then adjust the two cylinders like a tie rod to make them line up true.
Reflection on learning this week: This was the first time I had pulled apart a hydraulic cylinder and it was really cool to see how it worked.
46 hours this week (between work and school)
Quarter total: 261 hours
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