Rear of car in air, on axle stands please. Remove rear wheels, remove plastic cup surrounding handbrake lever under floor.Remove split pins from clevis pins on rear shoe activators. Remove clevis pins and store somewhere safe. Loosen outer cable at small bukhead just aft of handbrake lever, remove split pin from clevis pin inside pulley on bottom of handrake lever, unclip cable from bottom of car and throw it in the bin.
Before fitting new cable make sure the actuators are not seized or too badly worn. If in doubt fit new ones. Make sure you use new split pins in all the clevis pins.
That is the easy bit.
Adjusting it, is a matter of making sure you have the most effort applied at the correct point on the ratchet. It can be as little as two flats of a difference between working and not.
Hope this helps
Cheers
D
Grumpy old git going fast downhill rather than downhill fast!!