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Old 10-13-2006, 09:18 PM
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Fluid seeping out of bleeder screw.

Has anyone encountered this problem before? I have a new chevy disc brake kit and I have bled the system 3 times already due to brake fluid that seems to seep from both bleeder screws at the caliper. It seems as though it would need teflon tape or something. I have tighted them down to the point I was afraid of stripping either screw or caliper. I then tried new screws with same outcome. Anyone? Thanks in advance, SS.

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Old 10-14-2006, 12:04 AM
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Are you sure the bleeders are threaded for those calipers? And you are right about them stripping easily. I would clean the threads and use a lil teflon tape on them.
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Old 10-14-2006, 07:43 AM
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Do NOT put teflon tape or any other sealant on the bleeder screws!!!

They are designed to seal when the angled tip of the bleeder screw makes 100% contact with the "seat" in the caliper.

If they are leaking any at all and seem to be tight; then there is probably some dirt or debri in the seat area or the seat/angle are damaged.

Check for scratches, dents, etc. on the bleeder screws and the caliper seats. Replace as required.

Overtightening can cause the bleeder screws to break off or strip the threads of the calipers.
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Old 10-14-2006, 09:15 AM
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Quote:
Originally Posted by Frisco
Do NOT put teflon tape or any other sealant on the bleeder screws!!!

They are designed to seal when the angled tip of the bleeder screw makes 100% contact with the "seat" in the caliper.

If they are leaking any at all and seem to be tight; then there is probably some dirt or debri in the seat area or the seat/angle are damaged.

Check for scratches, dents, etc. on the bleeder screws and the caliper seats. Replace as required.

Overtightening can cause the bleeder screws to break off or strip the threads of the calipers.
This is correct but I would prefer not to discuss how I know...
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Old 11-27-2006, 04:28 PM
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Hey guys. Here is an update on my situation. They vendor replaced the calipers and sent me a second set. I inspected this set and took pictures of the bleeder screws prior to installation. Do these look right. Needless to say this second set continued to leak.

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Old 11-27-2006, 04:33 PM
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The pictures are not real clear....but they look like someone has bottomed them out too tight....that will damage the seat as well as the bleeder screw. Just good and snug is enought to shut a brake bleeder off.
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Old 11-27-2006, 05:23 PM
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I had this problem today, I decided to change my old bleeders out. 1 out of the 4 I had bought leaked out the hole when tightened down. I just put the old one back in, now I have to return one of the ones I bought and get a new one...
I'd say theres something wrong with the bleeder itself. 2.99 a pop and still get junk, jeez....
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Old 11-28-2006, 04:59 AM
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Look at the step on the one on the left, it has been over tightened. Buy new GENUINE bleeders,they seal like an engine valve - on a narrow seat.
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Old 12-01-2006, 09:34 AM
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PTFE (Teflon) paste is better than the tape?

Quote:
Originally Posted by CDJr
Are you sure the bleeders are threaded for those calipers? And you are right about them stripping easily. I would clean the threads and use a li'l teflon tape on them.
I have read that the PTFE (Teflon) paste is better than the tape: you don't have to remember which way to wind it and it's easier to handle. With either choice, avoid getting tape or paste on the first few threads to keep it out of the inside of the cylinder. Is this correct?
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Old 12-01-2006, 10:17 AM
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Did you miss theaprt about not needing sealant of anykind?

The threads aren't the sealing part.
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Old 12-01-2006, 10:46 AM
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bleeder screws

just a thought .
1. #3202 is 3/8 x 24
2.#3201 is 10mm x 1.5mm
both are used in rebuilding

could maybe check and see if this is the problem,but dont use any sealers if it dont seal something is not right.



justin.
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Old 12-01-2006, 11:52 PM
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Quote:
Originally Posted by johnsongrass1
Did you miss the part about not needing sealant of any kind?
Apparently,yes. I just didn't read enough of the entire thread.

Quote:
Originally Posted by johnsongrass1
The threads aren't the sealing part.
I knew that . . .
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Old 12-02-2006, 06:09 AM
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From the looks of the bleeders the seats are not machined correctly.
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Old 12-02-2006, 09:38 AM
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Get a flash light and look into the hole.

Make sure the seat is clear of debris and is smooth too.

I have found that when you change calipers, or hoses, you disturb the lines and the crud that has accumulated in the lines over the years.

I always make it a policy to flush the lines until CLEAR, CLEAN fluid comes out. Then make sure there is nothing preventing the bleeder from properly seating.
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