I got a 59 3800 ton with a ten bolt rear (counted off diff cover) I have an oil leak that is messing up my brake drum. I cleaned up the drum and the backside of the wheel the brake drum doesn't have the hub in it like later model Chevys. How do I replace the axle oil seal? Do the axles come out without messing with any clips in the diff? I was reading an old 1955 3/4 1 ton manual and it says you need special tools to remove the hub but it didn't look like my rear my truck was used as a fire truck and I believe it has a 5-14 rear the rear cover has 10 bolts and the front pinion side has bolts also so it comes apart on both sides I also need to know what the oil seal part number is cause I'm sure it will be hard to find thanks everybody