 bleeding dual port brake calipers, which one first |
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| Elliot_Cannon |
 Jul 17 2003, 02:29 PM
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#1
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Senior Member  Group: Retired Members Posts: 1,922 Joined: 26-March 03 From: Orange County Ca Member No.: 480 Region Association: None  |
Hi,
This might have been answered earlier but I can't find it. When bleeding calipers with dual ports, do you bleed the bottom one first or the top one? I'm guessing the bottom one first but not sure. Cheers, Elliot |
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| Qarl |
Jul 17 2003, 02:38 PM
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#2
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Shriveled member Group: Benefactors Posts: 5,233 Joined: 8-February 03 From: Florida Member No.: 271 Region Association: None  |
You're correct.
Also rap on the proportioning valve and caliper with a wrench or something to release any trapped bubbles. Another trick is to jack up each corner of the car that is being bled. Thought being that any trapped air will rise to that corner and come out. And have lots of extra fluid and bleed like crazy. Keep an eye on your fluid level, that it doesn't get low, so you don't introduce exta air into the system. Also... invest in speed bleeders if you don't have a helper. Hope that helps! |
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| serge914 |
Jul 17 2003, 02:38 PM
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#3
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Member Group: Members Posts: 273 Joined: 21-May 03 From: Laval Quebec Canada Member No.: 723 |
Air bubbles always try to go up so I only bother to bleed the top ones.
Maybe someone can tell me if I am right. |
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| Brad Roberts |
Jul 17 2003, 06:11 PM
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#4
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914 Freak! Group: Members Posts: 19,148 Joined: 23-December 02 Member No.: 8 Region Association: None |
No need to bleed the bottoms.. waste of time and effort. Its easier to manufacture the caliper for multiple cars and have multiple bleeders.
B |
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| Mike's2nd914 |
Jul 17 2003, 08:42 PM
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#5
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Member Group: Members Posts: 109 Joined: 26-April 03 From: Birmingham, AL Member No.: 616 |
Bleed the top only. Haynes indicates the bottom are to be used only to drain the system. Haynes also gives the following order in which to bleed: RR, LR, RF, LF. Bleed until you think you have it, then bleed some more! (IMG:style_emoticons/default/driving.gif)
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| seanery |
Jul 17 2003, 08:53 PM
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#6
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waiting to rebuild whitey! Group: Retired Admin Posts: 15,857 Joined: 7-January 03 From: Indy Member No.: 100 Region Association: None |
start the farthest away from the MC and work towards it is the theory behind the order.
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| Lawrence |
Jul 18 2003, 06:28 AM
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#7
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Senior Member Group: Benefactors Posts: 1,661 Joined: 5-February 03 Member No.: 244 Region Association: None |
If you're bleeding, then use the top.
If you're doing a flush, you could use the bottom screw first, to get fluid out of the bottom of the chamber in the caliper. -Rusty (IMG:style_emoticons/default/smoke.gif) |
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