Originally Posted by Biggles
....What I really want to know, is it just a case of taking the wheel off, making sure the brakes are off to remove the drum and then unhooking the cable from inside the drum and pulling it out the back.
Usually, the cables can be replaced without dismantling the brakes. Release the front end of the cables. Go to the back of the wheel and pull the cable outwards until it comes off the kinda flat tapered bit. One half of these tapered pieces will then lift away to reveal the cable nipple hooked into the actuator. This presumes you service them and grease them regularly.
If the outer sheath is seized the the inner cable so you can't get it to
move.... err, good luck. Bolt cutters anyone?
I've just realised that the word seized doesn't follow the 'I before E except after C' rule.