21-02-2014, 12:30 PM
(This post was last modified: 21-02-2014, 12:31 PM by powerandtorque.)
To be honest new disks and pads shouldn't bind sufficiently to fail an MOT and certainly not after driving to the test station and having presumably bedded the brakes in on the way. It's lacking effort I'd expect from new disks/pads initially until they've bedded in, but again, really shouldn't be enough to fail an MOT given that the MOT brake requirements are really quite low.
If it's still obviously binding (turn the wheels by hand with the car jacked up after a drive) after 50 miles bedding in then you've got another issue. Seized caliper sliders or pistons would certainly be something to check together with making sure that it's nothing on the hydraulic side that's holding pressure - collapsed brake hose (normally show on a single wheel) or insufficient clearing on the servo-MC rod etc (normally show on one or both axles) for example. Sure sign it's something on the hydraulic side is if you crack the bleed nipple off and the binding disappears.
If it's still obviously binding (turn the wheels by hand with the car jacked up after a drive) after 50 miles bedding in then you've got another issue. Seized caliper sliders or pistons would certainly be something to check together with making sure that it's nothing on the hydraulic side that's holding pressure - collapsed brake hose (normally show on a single wheel) or insufficient clearing on the servo-MC rod etc (normally show on one or both axles) for example. Sure sign it's something on the hydraulic side is if you crack the bleed nipple off and the binding disappears.
1990 Peugeot 205 GTi 1.9 // 1991 Peugeot 205 GTi 1.9 16v // 1992 Peugeot 205 GTi 1.9 // 1999 Peugeot 306 HDi Estate