Hi I have a 2005 CAT 257b. One one the grease fittings on the undercarriage won't accept grease. I took it off and confirmed it wasn't the fitting by putting grease through it while it was off. I tried heating it up with a torch. I also tried taking out the screw and washer that covered the bearing and tried to use a screw driver to chisel out the grease around the edges. Anyone have any tips on how I can free up this hardened grease?
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