Hello Paul,
you might want to do a complete overhaul of both calipers. The general steps
are:
remove caliper
remove brake pads
close the brake pipe hole
wash/clean caliper
if appearance matters have it bead blasted
remove pistons by:
a. blow compressed air in the hole of the brake pipe and make sure not to get a
finger between the pistons. Usually one piston starts to move slowly and will
at
last pop(shoot) out. After this close the hole where the piston has been. This
can be done with a piece of rubber and a vice. Again blow in compressed air
untill the second piston is out. Mark the pistons to make sure they will find
their place again.
b. if a. didnīt work: find a screw which fits the thread of the brake pipe.
Drill a hole in it (the long way). Make a thread for a grease nipple into the
head of the screw and screw the nipple in. Connect your grease gun with the
nipple and press grease in. The pistons will come out!
clean the caliper(steam gun etc.). All grease has to go.
clean the pistons.
check the pistons and cylinders. Scratches in the caliper and scratches or rust
scars in the piston mean they have to be replaced.
after everything is clean you can start reassembling by using new sealing
rings , circlips and dust covers and a special brake caliper grease
now you can paint the calipers with heat proof paint
check the disc for wear and distortion
Reassembling and bleeding as usual
Let us know what you will do
Regards
Gerhard Wiederholl
CC 31998 LO
P.S.: Donīt dismantle the calipers
paul stapleton schrieb:
>
> Hi listers,
> well i was after a little help, my front brakes have been binding on
> the drivers side (uk) the previous owner,I won't call him a dpo as on the
> whole he did a excellent restoration job, however a few corners were cut and
> although she has new disk's and brake pad's and new copper brake pipes all
> round he did'nt for some reason only known to himself overhaul the calipers.
> I took the brake pads out this afternoon and had a look around and the
> rubber seals on the piston are shot they have holes in them and the piston
> on the outside won't move i can only assume (as i hav'nt looked yet) that a
> similar situation is occuring on the other side as when i put the brakes on
> the car dos'nt pull to one side or the other but stop's in what I thought
> was an acceptable manner.
> anyway after looking in the parts book i discover that i can get a
> repair kit but i have never fitted one! is it easy? anything to look out for
> ? and should i fit new pistons at the same time as they are relatively
> inexpensive. I don't know if it is important but the car is'nt fitted with
> a servo unit yet! But i do intend on bleeding the brakes to replace the
> brake fluid at the same time.
> Any help that any of you can put my way will be appereciated
> thank's in advance
> paul
>
>
|