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ok so when my problem started i thought it was the auto lockin hubs. pulled apart ad re-packed the hub, it was still grinding. so i converted to warn manual lockin hubs and low and behold it still grinds in 4x4, so i am thinking front diff. problem...the oil level was low (only had about 1/2 quart) so i sucked it out and put in about 2 quarts of royal purple 75w90, shifted into 4x4 and into 4x4 low smoother than it ever has, started driving it and thats when my nightmare began! truck is a 97 f250 supercab, the front diff.is eather dana 30, 44, or 50? any ideas on how to fix this? it is not like the rear diff with a cover, looks like the whole diff and axle assembly needs to be removed to seperate? so i have no idea whats going on in there!
hmmm what exactly is this nightmare you speak of? yeah to pull it apart you're going to have to pull the whole thing down. I'd start by pulling the front axle shafts first as it can be without dropping the rest. it'll make it a little lighter and you never know something silly might show up.