And what a complete ballache it was...
First had to find a thin-profile 17mm spanner... So while out, bought a new Draper 1/2" socket set too (last one is missing 90% of its bits)
Disc retaining bolts were rounded off on BOTH sides, so had fun getting the damned things out... Discs were also completely seized onto the hub too, no amount of hammering or pulling got anywhere so ended up putting nearly my entire weight on a jimmy bar before they 'popped' off...
There were *no* wear sensors attached at all. The plugs where they attach were knackered, so also had to replace those... And also get new plastic clips to hold the cable in place...
So finally got everything new fitted, greased the hub and disc face so to stop things sticking together again, new wear sensors fitted... Then noticed there were no spring retaining clips, so need to order those tomorrow & get them fitted...
All in, braking efficiency has increased atleast ten-fold! There was about 1mm or so friction material on the drivers side, and around 3mm on the passenger side. Brake pads were also different makes on both sides (so wondering if they were replaced independently at different times)
Fun stuff...