if its the hub it self then its a axle change.
You don't, you replace it.
Yes, it is possible to fix a bent rear derailleur by carefully adjusting and realigning it. However, if the derailleur is severely damaged, it may need to be replaced.
Trying to fix a cv axle half shaft your self is difficult. Replace it with a rebuilt or new half shaft. The parts to repair yours would cost you more than a complete replacement does.
Depending on what made it go crooked : If it is wear you can replace bushings or bearings (might have to replace the axle shaft to.) that should fix it. If it has a bent axle shaft then you can take the wheel off and take a pipe put it over the end of the shaft and bend it back to straight. If you mean the toe in or out you can unbolt the swivels on the pull arms and adjust them that way. Hope this helps.
It depends on how it is bent. If it is just the flitting you can use a bar and a hammer. If it is the shaft you might be able to bend it back with a bar. If not you will have to replace it with new or used parts.
To fix a bent rear derailleur on your bike, you can try gently bending it back into place using a derailleur alignment tool or a wrench. Be careful not to apply too much force, as this could further damage the derailleur. If the derailleur is severely bent or damaged, it may need to be replaced by a professional bike mechanic.
The rear, or tail shaft, of a transmission has a seal around the output shaft. The drive shaft will have to be removed and the seal replaced.
the shaft will, but the axle clips might not, but that is a very cheap fix, the clips are around 15 for a set
Inner or outer front? I do a lot of repairs myself, engine rebuild, transmission swaps, there are 3 things on a 4x4 I will not open up and fix.. front axle, transfer case, rear axle. I hate the smell of burnt gl5. I hate putting it back together and having a seal tear while pushing the shaft thru it.. unless you are talking about the rear pumpkin seal.. 10-15 bolts new gasket and a little permatex.. So for my answer How would I replace the rear axle seals I would take it to a shop and pay them unless I could find the exact axle at a junk yard for the cost of half of shops fee.
To fix a bent rear derailleur hanger on a bicycle, follow these steps: Remove the rear wheel. Use a derailleur hanger alignment tool to straighten the hanger. Check the alignment by eye and with the tool. Reinstall the rear wheel and adjust the derailleur if necessary. It is important to be gentle and patient when straightening the hanger to avoid causing further damage.
check the tailgate Check the ubolts on the axle, I had a rattle in the rear, the u bolts were loose on the drivers side of the rear axle i had a rear end noise as well. turned out my spare tire was loose. might want to check that out. My rattle was a broken leaf spring