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IMO I personally would service and repack/reseal the front axle if its never been done by 235K miles. But thats just me...
I agree...at 235K I would want to know what condition everything is.
I agree, somewhat. I would inspect and make sure no damage would be done by driving, if I were confident of this, would drive it a bit before taking it apart. On a new to me/old rig, there is a good possibility that other things maybe needed and they may not be evident.
For example, say the gear oil is thick, so reseal the axle, everything goes great. Once it is back together with new thinner oil, the pinion bearing starts howling. If this was known, it would have been a quick job with the axle apart, now everything needs to come apart, again.
I guess I have been bit too many times and often on customer rigs, making for uncomfortable deals. If it were mine, would check/set bearing preloads (wheel, knuckle), fill knuckles, change diffs, tcase, lubes, etc and drive to get a baseline on the rig before major surgery. This is relatively quick, inexpensive and may net good info, especially on a rig with 200K+ and little history. If it had birf soup, my answer would be different.
