In a message dated 01-02-22 06:57:17 EST, suhring@lancnews.infi.net writes:
<< All the years I've worked on the
car I've never put on shims. Do they go on the pad side of the break
pads or on the back side? If on the pad side, won't they just wear out
since you want the pads to do the breaking? What good are they
if they are on the back side? As you can tell, I'm confused this
morning. I know that the arrow needs to be pointing in the direction
of the wheel rotation. Do I need to put any grease on these? >>
Scott,
The anti-squeal shims fit between the pad back plate and the caliper
pistons....there is a correct way to place (align) them so make sure you take
a look at your Bentley or Haynes book for a photo....I know there's a photo
in both books because I referred to them last April when I did my brakes!
The shims fill the gap between pad and piston to keep the pad from vibrating
or rattling against the rotor and/or piston during no-braking intervals. I
suppose that if the rotor was always perfectly "true" (no wobble), this
wouldn't be a problem.
Use the proper brake grease (I used the green stuff that came with the pads -
I have plenty left if you need some) sparingly on both sides around the edges
where the shim makes contact with the piston and pad and around the pad
retaining pin holes that are in the shims.
You didn't mention this but I vaguely remember another little annoyance with
the brake job - where to place the wire spring clip on the retaining pin that
secures the pads in place? I can check my chassis tonight for the true
story, but from memory I think there's enough play (back-n-forth) in the
retaining pin to allow the wire spring clip to fit between the pad back plate
and the shim or between the shim and piston.....it's really much easier to
understand this if you're looking at the caliper assembly. I don't recall
Haynes and Bentley being real clear on this issue. I think (again, I'd have
to look at to be sure), I looked at the Spit calipers for reference and
fastened my wire spring clips between shim and piston because it made better
sense to me....
Chip Krout
'76 TR6 CF57822U (chassis finished - busy grinding & sanding the body - check
out my progress by visiting
http://albums.photopoint.com/j/AlbumIndex?u=1270980)
'70 Spit Mk3 FDU78512L (tucked away for a long winter's nap)
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