At 09:23 PM 2/19/01 -0800, Patrick Caswell wrote:
>I have a problem. I sent out my calipers to be rebuilt (I know I should have
>done this myself). The shop I sent them to assured me they had rebuilt
>British brake systems before. I just received a call from the guy at the
>shop asking if I knew the torque sequence and values for the bolts that hold
>the caliper halves together.
Here's the information that I saved from an earlier post. I don't vouch for the
accuracy, but its the best that I've got:
>Date: Fri, 20 Mar 1998 17:51:37 -0500
>From: Cliff Hansen <email@example.com>
>Subject: Rebuilding type C calipers (TR4A-TR6)
>A summary of the information I have found:
>1) The o-ring seal between the caliper halves IS available. TRF
>carries it. I bought Beck-Arnley kit 071-1051 locally, it contains
>2 o-ring seals, 4 piston seals, and 4 dust boots. $14 US.
>2) DON'T take the caliper halves apart if you can avoid it. In
>other words, if it ain't broke, don't fix it. These things are kind
>of like a head-to-block joint without a gasket. You run the risk
>of not getting a good seal.
>3) However, if you do take them apart, the torque specs for the
>7/16" (inside pair) 75 ft lbs.
>3/8" (outside pair) 45 ft lbs.
>Thanks to TRF technical assistance line.
>4) Stainless steel pistons are available from TRF for $24 apiece.
>A shameless, deserved advertisement for their free information.
>5) Rebuilt calipers are available from Apple for $95 each. Very good
>price, includes new stainless steel pistons, backed by Apples good
>reputation. If I needed new pistons I would probably just buy
>Apple's calipers. $190 for both sides, vice $14 for the gaskets
>and $96 for the pistons. With Apples you know the cylinder bore
>is good and you don't have to worry about 2) and 3) above.
>Finally, thanks to this list for their assistance. TRF didn't say where
>they got their torque specs but I'm not inclined to question them.
>1966 TR-4A CTC 64615L (Anxious to be done with front end work)
I hope that helps,
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