We had a couple of those NH220's running 100kw generators on the Adams class destroyer I served on in the early 90's. With only 4 head bolts per cylinder, they were prone to compression leaks, and the old Master Chief diesel inspector at Pearl Harbor was keen to this. He used to ding me on them every time, if the slightest oil bubbling by the head gasket was present. Didn't help that the counterbores could've used some attention. I got tired of that real quick, so I went and bought some copper spray-a-gasket one day, and sprayed down the head gaskets real good with it. That did the trick. I cleaned up all evidence around the edges, and never did tell him how I fixed them, but he left me alone after that. :D And yes, torquing the head bolts to 600lb-ft was a chore in a cramped space.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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