Correct torque settings for caliper brake lines?
Thread Starter
Burning Brakes
Joined: Mar 2012
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Correct torque settings for caliper brake lines?
I'm finishing up a rebuild of my front calipers and I hit a WSM problem. On page 221 the torque specs are quoted for the brake line to caliper as 14 nm (10 ftbs). I'm pretty sure this can't be right since the line spins at this torque and it doesn't crush the washer.
Anyone have advice?
Thanks,
Anyone have advice?
Thanks,
Rennlist Member
Joined: Jul 2008
Posts: 2,288
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From: NW Arkansas
If they are hollow bolts (Banjo bolts) that join the hose on front four-piston fixed calipers the hollow bolts get 12 ft/lbs (144 in/lbs). The rear connections on four-piston fixed calipers get 10 ft/lbs (120 in/lbs). If they are floating calipers the hose connection to the caliper gets 10 ft/lbs (120 in/lbs). Floating Frame caliper hose connections get snugged at 1 ft/lb. All the brake hard line connections (master cylinder, brake hose, etc.) get 8.8 ft/lbs (106 in/lbs).
Mike
Mike
Thread Starter
Burning Brakes
Joined: Mar 2012
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Hi Mike, that's pretty much exactly what the WSM states, but it's not working for me. At 12 ft/lbs on the banjo bolts I'm left with a brake line I can move by hand and not enough compression to seat the crush washers. There's no way this spec can be right near as I can tell.
Thread Starter
Burning Brakes
Joined: Mar 2012
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Mike -
It was the bolt. The banjo bolts Goodridge ships with their 928 brake lines aren't compatible with the stock calipers. When I put the originals back in they torqued correctly to specification.
Be warned: Goodridge brake parts aren't compatible with the '85 928 calipers.
It was the bolt. The banjo bolts Goodridge ships with their 928 brake lines aren't compatible with the stock calipers. When I put the originals back in they torqued correctly to specification.
Be warned: Goodridge brake parts aren't compatible with the '85 928 calipers.
Last edited by Pfc. Parts; Jan 25, 2014 at 01:19 AM.
Thread Starter
Burning Brakes
Joined: Mar 2012
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I did have them oriented and simply replacing the Goodridge bolt with the stock bolt cleared the problem. There's a shoulder on both bolts, the one on the Goodridge keeps it from fully seating into the caliper at the correct torque value. I dread thinking about what might have happened if I hadn't been using a torque wrench.
This is the second incompatibility I've found with these parts. The other end of the line doesn't have a "flat" on it to allow it to penetrate the mounting bracket inside the wheel well. On the advice of others I modified the bracket so it will now accept a round fitting. I'm beginning to worry I made the wrong decision there but expect it's correctable in the event I need to back out the entire thing.
Thanks for your help,
This is the second incompatibility I've found with these parts. The other end of the line doesn't have a "flat" on it to allow it to penetrate the mounting bracket inside the wheel well. On the advice of others I modified the bracket so it will now accept a round fitting. I'm beginning to worry I made the wrong decision there but expect it's correctable in the event I need to back out the entire thing.
Thanks for your help,
