[Mgs] MGB brake caliper seals

[Matt Trebelhorn]

Not having found a source for *just* the metal rings, I ordered a  
rebuild kit from Moss.

Last night, I rebuilt the second caliper -- in about 15 minutes.  Easy.

The method on Barney's website -- which I referenced in my message  
last week -- consists simply of putting the first seal in place,  
inserting the piston most of the way, and sliding the seal and second  
ring over the piston; then putting a flat piece of material (I used  
an old brake pad) over the piston and compressing the piston, seal,  
and ring into the caliper.

I removed the pistons originally with a combination of methods seen  
on this list: 3 of the 4 came out easily with a plumbing test cap  
from the hardware store.  (Actually, I used a combination of pieces  
from 2 such caps: the lower "cone" from a 1 1/2"piece, to fit inside  
the piston, and the rubber and top cone, and the other hardware, from  
a 2" cap.)

The last piston resisted the plumbing cap removal method, so I made a  
fitting that combined a brake fitting and a grease fitting, and used  
a grease gun to push the last piston out.

Thanks to the list.  The first time I did this job (14 years ago?),  
it was horrible -- awkward, slow, dirty, difficult.  Using the  
combination of methods I learned here, it was not.

So, thanks.

Matt


On 7 Sep, 2010, at 6:26 AM, Matt Trebelhorn wrote:

> I was rebuilding the calipers for my B this weekend, and managed to  
> mangle two of the metal rings that retain the outer seals.
>
> (I would not have done so had I checked Barney's webpage first.   
> The method on this page:
> http://mgaguru.com/mgtech/brakes/bt104b.htm
> works brilliantly.)
>
> My question: can the metal rings be bought separately?  I don't  
> want to waste a rebuild kit if I only need the metal rings.
>
> One cool thing I figured out and wanted to pass along:  u-bolts  
> from the rear axle have the same bolt spacing as the calipers and  
> make a good stand for holding the caliper while painting it.  (The  
> caliper I did rebuild is now grey; no red/yellow/purple etc. for me)
>
> Matt
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