rear caliper bolts

[roverv8]

ok,rear brake calipers on my 406 r reg, should the slide up and down the allen bolt and bottom bolt for braking?

[steve_earwig]

Yep.

[roverv8]

thats what i though, loads of smoke on test drive but have new discs to wonder if its just running in,lol

[roverv8]

no just been round the block again,sticking badily,

[bytecode]

Hi, is it that the caliper doesn't want to move along the guide bolt?
I had something like this on one of mine, this is how I unseized it:

1) I carefully applied some WD40 or similar to the sliding-bolt, made & drank a cuppa.

2) I put a large-socket over one end of the sliding-bolt, it was large enough to "cup" the end of the bolt and touch the caliper without touching the bolt.

3) I put a large G-Clamp on, so that one end of the clamp was pressing on the sliding-bolt, the other was using the large-socket as an extender to cup-around the other end of the sliding bolt and thus apply the pressure to the caliper (instead of the sliding bolt).

4) I was able to work the caliper along the bolt by a few mm until the bolt was effectively pushed to the limit of the clearance provided by the "cupping" large socket.

5) I reversed the side that the socket was cupping and worked the slid-bolt/caliper the otherway.

6) I repeated 4&5 several times, then cleaned & lubed everything up. Flew through the MOT on brakes.

NB: I did break one of my G-clamps when I failed to realise that I'd reached the limit of the clearance provided by the cupping-socket