I replaced link assemblies (same brand) on both my Komatsu PC200-7 and Hitachi ZX200 two years ago. Both sets of tracks developed the same problem. It looks like seizure on the pin/bush.The machines did about 1800 to 2000 hrs when the problem occured. The supplier says: 'Sorry, our warranty is 12 months/1500 hrs, can't help, but try diesel to free it." Really?. The machines worked on general hire, but never in water, and even working in water daily shouldn't cause it. Any suggestions on how to free the pin/bush?
Is there a quick fix?
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