Brake caliper rebuilds

[th3_f15t]

Morning ya'll. New question for you all... In the process of rebuilding rear R32 brake calipers and am quite stuck.

I can't seem to get the piston back in with the inner O ring seal in place, and also struggling to fit the dust seal. There is a threaded bolt inside the caliper that the piston fixes to (which is does fine with no seals in place) but even with large amounts of lubricating oil it just refuses to engage. Anyone have any hints/tips to help?

Failing that, do you have any places you recommend for doing full caliper rebuilds?

[bacillus]

Have you tried PMing DaveB1970 for advice?

[th3_f15t]

Of course, for he is the braking god in these parts. But put out a post as others may answer quicker, or find the advice useful. If Dave messages me I'll post it here to share this info.

[th3_f15t]

Sorted this out now.

Lots of grease inside the O ring seal, on the piston and a bit inside the dust seal (where it meets the caliper body), and made a tool from wood. Then gently rotated the piston till it wound all the way flush with the seal. Only time will tell how good a job I've done!

[bacillus]

  

[th3_f15t]

I've sorted it now, my uncle fashioned a caliper winding tool that worked a treat. Also discovered that a silicon spray he has smells very citrus like. The pink elephant agrees...

[rich83]

You shouldnt have to rotate the front piston to get it to retract.

[th3_f15t]

You shouldnt have to rotate the front piston to get it to retract.

It was for the rear calipers, which have a threaded bolt, part of the handbrake I think. We improvised with a bit of wood, which broke several times but worked. Plenty of silicon grease too, was slightly high by the end of it. The joy of finishing combined with solvant abuse was a good feeling.

[robern2]

Morning ya'll. New question for you all... In the process of rebuilding rear R32 brake calipers and am quite stuck.

I can't seem to get the piston back in with the inner O ring seal in place, and also struggling to fit the dust seal. There is a threaded bolt inside the caliper that the piston fixes to (which is does fine with no seals in place) but even with large amounts of lubricating oil it just refuses to engage. Anyone have any hints/tips to help?

Failing that, do you have any places you recommend for doing full caliper rebuilds?

try richard mount at more than just wheels.