I have a 1986 bronco eddie bauer edition when i went to back up to a trailer
today i felt a wierd bindage problem it felt like something was rubbing the tires but
when i checked nothing was wrong but when i pulled forward then back it cleared
up when i first got the truck i checked the diffs the rear was totally empty could this be the problem or something else help me please.

pull the brake drumes on both sides look to see if the axle seals are leaking
if they are that will cause a problem, you should replace the seals and clean the springs and other hardware that hold the brakes on and replace the brake shoes

I did notice that the wheel cylinder on the drivers side was leaking but not much else when i drove it today there was no problem but i know the problem did not go away but it still is a mystery