I am a mechanic with a son that is a welder. We don't know much about dozer tracks but have done allot of equipment work and welding. My question is my neighbor has a Dresser dozer that he says has sealed pin tracks. What ever that means. He says that they are a bear to drive the pins out of. He wants to pull out a link because he is out of adjustment. Anyway instead of driving out pins he want to have us to cut a link out and weld it back together. He said aligning up the bolts in the pad would be the hard part. Is he blowing smoke? Should we stay away from this job? I am not too crazy about doing this job. A 60 year old man don't really need this kind of fun. My son that is a welder could use the money and I would be willing to use my shop and help him if this is worth doing. Help me out please. Thanks for all the information in advance!