Re: MOT fail - Brake parts help needed.
Well it's bad luck that they have decided to condemn your discs.
I'd look at Shop4parts for them, and change them myself.
They need to learn that finding unnecessary work doesn't pay. My front discs have done 145,000 miles.
Scoring is a result of letting the pads wear down to the metal but it goes once you put new pads on and get a few miles under your belt. Shop4parts aren't bad for this kind of thing.
On the 145s the non-ABS models are solid and the ABS models are vented. I don't know about the 156s. Maybe it's the same.
On to the rear brake issues.
Rear discs are hardly justified as they contribute very little braking effort compared with the fronts but they have become part of the marketing checklist so the drums had to go. The problem with this is that you get very little movement, the handbrake mechanism is complicated, and things sieze up over time.
Parking brakes usually fail because the self-adjustment mechanism is not working. This is often a result of the arm that the cable pulls not returning fully to rest when the handbrake is released, so self-adjustment cannot happen.
If the self adjusters don't work the handbrake mechanism moves out of the area where optimum leverage is possible so the performance suffers.
I would get in there with the WD40 and make sure the arm (see inside the ring in the illustration) is moving freely and returning to rest. Get the pads out and screwdriver any rust off the pad guides, then apply copper grease to the guides and the edges of the pad that are in contact with them.
You may need to wind the rear calipers back in. They turn clockwise using the two tips of a pair of pliers.
I'd free them up by winding them in (see photo), pumping the pedal a few times, then winding them in again.
I hope this helps.
Last edited by Bodger; 03-11-07 at 14:40.