On or around Fri, 11 Mar 2005 10:17:24 +0000, rads
<firstname.lastname@example.org> enlightened us thusly:
>Think I have a sticky piston in one of my calipers.
>Paddocks do rebuilt calipers for £55, not a disaster, but also sell
>pistons and seals for approx £12 per caliper.
>There can't be very much to a caliper (!?!), how feasible is it to do
>my own rebuild (assume some mechanical competance)?
>Paddocks also list stainless pistons fo an extra £1.60 ish. Sensible
not a problem to rebuild 'em. You'll need a few largeish clamps, and lots
of brake fluid... basically, remove the caliper from the hub/disc. pump
the brake a couple of times. Look at the caliper and see which pistons have
moved, clamp on these ones so that they don't move any further and pump
again. once you have all 4 moving, pump 'em all out till they're mostly
out, then remove them. clean the caliper body scrupulously, fit the new
seals and dust seals to the caliper, refit pistons, push 'em home and refit
caliper and pads. bleed according to instructions, noting that 4-piston
fronts have anything up to 3 bleed nipples.
the key to long-term success is to get it all as clean as you possibly can.
Stainless pistons won't rust but may not be as hard as chrome ones. I'd be
inclined to fit 'em if they're not that much more.
Austin Shackles. www.ddol-las.fsnet.co.uk
my opinions are just that
"The great masses of the people ... will more easily fall victims to
a great lie than to a small one" Adolf Hitler (1889 - 1945)
from Mein Kampf, Ch 10