The studs break because the manifold expands and contracts with exhaust temps.Replace the manifold;make sure the stud holes are larger than the studs by almost 2 sizes-3/8 stud=1/2 hole.Buy Genuine CAT parts!All new studs,gaskets and manifold sections.DON"T weld them together=They HAVE to slip in their expansion joints. Next problem to consider is why is exhaust breaking the studs=is the manifold getting too hot for a reason?Such as over fueling/lean air mix,hard pulls lugging the engine,not downshifting,too rapid shut down with out allowing the engine to idle and cool down.Is there too much exhaust back pressure=possible clogged muffler? Or was it just the manifold being welded at the slip expansion joints and the stud holes too small? Mark
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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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