rodgling
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| posted on 18/4/15 at 02:15 PM |
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calliper alignment
Checking my calliper alignment with a feeler gauge between pad and disc... how much is too much? On one side I can't get the gauge in, on the
other I can get the 0.006" gauge in at the top. Worth fettling?
[Edited on 18/4/15 by rodgling]
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theprisioner
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| posted on 18/4/15 at 03:24 PM |
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I don't think I understand the question. Surely the key measurement is between fully retracted piston and disc surface. They should be roughly
even and obviously larger than the pad thickness. The gap between released pad after braking and disc is a function of the design of the seal and is
designed to be a few thou at most. If the seal is worn then you may get a problem here.
http://sylvabuild.blogspot.com/
http://austin7special.blogspot.co.uk/
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rodgling
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| posted on 18/4/15 at 04:02 PM |
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It's really that the pad needs to be square to the disc (or as you say piston needs to be square to the disc - this is just a more practical way
of measuring it), it wasn't. I've now shimmed the calliper slightly to get it square, can't say it has made a huge difference
though.
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gremlin1234
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| posted on 18/4/15 at 04:31 PM |
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unless there is obvious misalignment, don't worry about it, as the brakes bed in they will, well... bed in!
in normal running you only want/need a miniscule gap when the brakes are off, it can happen that the seals can pull pistons too far back, but 6thou
would be fine.
edit to add
if you have large gaps disk to pad in normal running, you should also check disk runout, and the wheel baring's
[Edited on 18/4/15 by gremlin1234]
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rodgling
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| posted on 18/4/15 at 04:48 PM |
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Yeah, pedal travel feels quite good - it was just as part of a general overhaul of the brakes to make them as good as possible I thought I should give
it a go.
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