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dwhite17(at)columbus.rr.c
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 Posted: Wed Jun 07, 2006 6:08 pm Post subject: Leaking brakes |
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Anyone got any good ideas on how to stop leaking brake cylinders? All four are leaking a tiny bit at the lower fitting. I first installed them without any pipe dope. then I drained the brake lines, cleaned the fittings and reinstalled with prematex sealant and they still leak a tiny bit.
Ideas please!
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altoq(at)cebridge.net
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| Posted: Wed Jun 07, 2006 6:51 pm Post subject: Leaking brakes |
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If you're talking about the brake line, are the double flared? If they aren't, double flair them. If they are, they make soft copper washers that are meant to take care of the same kind of problem in air conditioner systems. Auto parts stores have them. If you're sure its the fittings, good but it might not hurt to look at the calipers and make sure the pistons are not inverted, exposing the "O" rings. Some came from the manufacturer that way.
Good Luck
John D.
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dwhite17(at)columbus.rr.c
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| Posted: Thu Jun 08, 2006 1:18 pm Post subject: Leaking brakes |
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No, its the fitting at the brake pedal cylinder, and just the bottom fittings!
[quote] ---
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pitts_pilot(at)bellsouth.
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| Posted: Thu Jun 08, 2006 1:33 pm Post subject: Leaking brakes |
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dwhite17(at)columbus.rr.com (dwhite17(at)columbus.rr.com) wrote:
| Quote: | No, its the fitting at the brake pedal cylinder, and just the bottom fittings!
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Well, (on the master cylinders) that's where the pressure is!!! You have two places for leaks. At the flare side and at the pipe side. I'd use teflon dope (or tape) on the pipe side and fuel lube on the flare side. Leave at least one thread uncovered on the pipe side to prevent trash from getting in the system.
Linn
do not archive
| Quote: | | Quote: | ----- Original Message -----
From: John D.Heath (altoq(at)cebridge.net)
To: rv-list(at)matronics.com (rv-list(at)matronics.com)
Sent: Wednesday, June 07, 2006 10:55 PM
Subject: Re: Leaking brakes
If you're talking about the brake line, are the double flared? If they aren't, double flair them. If they are, they make soft copper washers that are meant to take care of the same kind of problem in air conditioner systems. Auto parts stores have them. If you're sure its the fittings, good but it might not hurt to look at the calipers and make sure the pistons are not inverted, exposing the "O" rings. Some came from the manufacturer that way.
Good Luck
John D.
| Quote: | ----- Original Message -----
From: dwhite17(at)columbus.rr.com (dwhite17(at)columbus.rr.com)
To: rv-list(at)matronics.com (rv-list(at)matronics.com)
Sent: Wednesday, June 07, 2006 9:05 PM
Subject: Leaking brakes
Anyone got any good ideas on how to stop leaking brake cylinders? All four are leaking a tiny bit at the lower fitting. I first installed them without any pipe dope. then I drained the brake lines, cleaned the fittings and reinstalled with prematex sealant and they still leak a tiny bit.
Ideas please!
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greg(at)itmack.com
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| Posted: Thu Jun 08, 2006 3:59 pm Post subject: Leaking brakes |
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Can someone explain "double flared" as opposed to the single flare? Perhaps a link to a picture or 2 would help.
Thanks Greg
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alexpeterson(at)earthlink
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| Posted: Thu Jun 08, 2006 5:02 pm Post subject: Leaking brakes |
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I don't believe it has been made clear exactly where they are leaking.? However, since you mentioned pipe dope, it?would seem to be?the pipe threads. Try some EZ Turn and tighten them as much as you dare.? Double flaring is not generally necessary,?and?in this case it is not relevant, as?there are not?metal lines coming from the bottoms of the brake master cylinders anyway.
?
Alex Peterson
RV6-A N66AP?758 hours
Maple Grove, MN
Greg(at)itmack
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altoq(at)cebridge.net
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| Posted: Thu Jun 08, 2006 5:13 pm Post subject: Leaking brakes |
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A special flairing tool is used in two steps.? The first step might be said to make a bubble like form at the end of the line.? The second step folds the end most portion?back inside the tube, making the flair its self double thickness.?Hope this comes through.
John D
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Bob Collins
Joined: 11 Mar 2006
Posts: 470
Location: St. Paul, Minnesota
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| Posted: Thu Jun 08, 2006 7:48 pm Post subject: Re: Leaking brakes |
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Can someone recommend a tool for this? Maybe a link?
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Bob Collins
St. Paul, Minn.
Letters from Flyover Country
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