I think the reverser is okay - but I have some reservations about replacing the isolator, putting it back together and then finding there is still a problem.Īny advice would be greatly appreciated. The input shaft on the reverser does not appear to have any damage but I don't know how to tell if the shaft is worn to the point that it could have contributed to the isolator failing. The technical service manual does not seem to have any information on how to assess whether these parts should be replaced. Since the isolator assembly was loose on the flywheel I am wondering if the springs, flywheel anchors and isolator anchors should be replaced. Taking the isolator off of the flywheel it is apparent that the isolator is shot - the splines on the isolator are extremely worn with fresh tell marks where I think the isolator was slipping on the reverser shaft. The isolator assembly was very loose on the flywheel - meaning I could grab on to it and move it around - including being able to pull it away from the flywheel about 3/4 of an inch. The dozer has a reverser so I pulled the engine to see if the issue was with the isolator or the reverser. When moving the dozer to look into the issue it stopped moving with a grinding sound. Everything was going great pushing a bit of dirt when the dozer developed a pretty sever vibration that could be felt in the floor plates. The steering cluthes were locked up and I replaced the steering clutches and brakes. I bought a 350B that is in pretty good shape for a few thousand at an auction.
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