Welder Dave
Senior Member
I had new pins made and put spring tension bushings in the swing post with Loctite 660 to repair a slightly loose fit. It's on a Cat 5G2150 backhoe. Swing seems tight and just playing in some black dirt seems to work good. Haven't done any serious digging yet. The minor problem I noticed is that the boom lock pin won't go all the way through both ears to hold the boom up. It will hold it up but only uses the top ear. I rarely use it but it comes in handy sometimes like if you blew a hose and wanted to drive the machine back to the shop to fix it or the engine wouldn't start and you wanted to tow it. Is it possible the new pins and bushings are a little tighter fit than original? The boom cylinder is fully retracted before it hits the steel blocks on the boom. One of these blocks has the ears for the boom pin. It needs to move about 1/8" more for the pin to go all the way through. I would think if it was sloppier the pin would go in no problem? Maybe just need to put a few hours on it or wondering if the boom up and down pivot pins/bushings could be worn a little? It seems if they were loose would also make it easy to put the boom lock pin in. Anyone have any thoughts or suggestions?