 Rear brake adjusting bolt. |
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| 914itis |
 May 28 2013, 08:08 PM
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#1
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Advanced Member  Group: Members Posts: 2,892 Joined: 9-October 10 From: New York City Member No.: 12,256 Region Association: North East States  |
I installed a rear caliper that I had sitting today and it's leaking thu the outer adjusting bolt. I tried loosen up the nut and and adjust clock and counter clockwise to no avail. What am I doing wrong and how do I fix this?
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| Eric_Shea |
May 28 2013, 08:11 PM
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#2
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PMB Performance Group: Admin Posts: 19,278 Joined: 3-September 03 From: Salt Lake City, UT Member No.: 1,110 Region Association: Rocky Mountains  |
It's the outer adjuster seal. Did you replace it when you rebuilt them?
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| 914itis |
May 28 2013, 08:29 PM
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#3
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Advanced Member Group: Members Posts: 2,892 Joined: 9-October 10 From: New York City Member No.: 12,256 Region Association: North East States |
QUOTE(Eric_Shea @ May 28 2013, 10:11 PM)  It's the outer adjuster seal. Did you replace it when you rebuilt them? I did not rebuilt them. Where can I get a replacement? |
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| Eric_Shea |
May 28 2013, 08:31 PM
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#4
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PMB Performance Group: Admin Posts: 19,278 Joined: 3-September 03 From: Salt Lake City, UT Member No.: 1,110 Region Association: Rocky Mountains |
I haven't got a clue... (IMG:style_emoticons/default/biggrin.gif)
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| SirAndy |
May 28 2013, 08:33 PM
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#5
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Resident German Group: Admin Posts: 41,679 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
QUOTE(Eric_Shea @ May 28 2013, 07:31 PM) I haven't got a clue... (IMG:style_emoticons/default/biggrin.gif) (IMG:style_emoticons/default/poke.gif) |
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| Eric_Shea |
May 28 2013, 08:34 PM
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#6
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PMB Performance Group: Admin Posts: 19,278 Joined: 3-September 03 From: Salt Lake City, UT Member No.: 1,110 Region Association: Rocky Mountains |
Paul... You can spray some PB Blaster under the nut as a temporary fix. It may swell the seal enough to stop the leak.
That said, with a leak like that the seals are probably all hard and brittle. PB Blaster may not work if you have a chunk taken out. It's time... |
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| 914itis |
May 28 2013, 08:38 PM
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#7
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Advanced Member Group: Members Posts: 2,892 Joined: 9-October 10 From: New York City Member No.: 12,256 Region Association: North East States |
It's my brother!a car. I don't think anything came out. I will give it a shot, if not, I guest it's coming to you..
The bolt spins and don't stop. Is that the way it should be? |
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| Eric_Shea |
May 28 2013, 08:47 PM
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#8
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PMB Performance Group: Admin Posts: 19,278 Joined: 3-September 03 From: Salt Lake City, UT Member No.: 1,110 Region Association: Rocky Mountains |
The bolt is an adjuster. The mechanism inside the piston will spin if you adjust the bolt all the way in (clockwise on that one). Be careful when doing that as it can stick. Counter clockwise should adjust the piston "out". If not, the adjuster itself is stuck in the mechanism by turning it clockwise too tight.
Short answer: yes, the adjuster spins like that. If you have a 4mm hex and an air wrench (and you believe it is indeed stuck) you can try hitting it with a few short bursts in the counter clockwise direction. That should break it free and get the piston adjusting again. |
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| 914itis |
May 28 2013, 08:55 PM
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#9
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Advanced Member Group: Members Posts: 2,892 Joined: 9-October 10 From: New York City Member No.: 12,256 Region Association: North East States |
Afaik, when turning counter clock wise, the brake pads should be moving closer to the disk and clockwise should move the pas away from the disk. Correct me if I am wrong. He says that when he turns either way, there is no action on the pad.
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| brant |
May 28 2013, 08:57 PM
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#10
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914 Wizard Group: Members Posts: 11,640 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains
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rebuild time...
send to eric if your smart |
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| Eric_Shea |
May 28 2013, 09:21 PM
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#11
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PMB Performance Group: Admin Posts: 19,278 Joined: 3-September 03 From: Salt Lake City, UT Member No.: 1,110 Region Association: Rocky Mountains |
QUOTE He says that when he turns either way, there is no action on the pad. Then the adjuster is stuck in the internal adjustment mechanism. Follow the procedure I outlined above. Again, with a bad seal, this is all probably moot. (Brant... Checks in the mail). (IMG:style_emoticons/default/biggrin.gif) |
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| 914itis |
May 28 2013, 09:48 PM
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#12
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Advanced Member Group: Members Posts: 2,892 Joined: 9-October 10 From: New York City Member No.: 12,256 Region Association: North East States |
Thanks
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