 Brake reservoir hoses / sections, Which section goes to which brakes? |
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| sfrenck |
 Jul 11 2011, 04:32 PM
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#1
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Member  Group: Members Posts: 492 Joined: 28-February 10 From: Wilmington, DE Member No.: 11,411 Region Association: MidAtlantic Region 
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Tried many searches, asked a couple people... getting ready refill my brake system. The larger section of the two in the brake fluid reservoir is currently connected to the rear brakes. I hooked my hoses up like the pic below (items 11 & 12) when I put on my new master cylinder. Is the reservoir larger because the volume of the rear brake system holds more fluid? Or am I backwards? Or does it not matter?
BTW - I know they are connected this way because I just sent my rear calipers out to Eric Shea for refurb and rear lines were left disconnected = brake fluid on the floor when I forgot to cover the reservoir with plastic to prevent the fluid from leaking out (no mysterious leaks / problems on the front brakes).  |
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| ArtechnikA |
Jul 12 2011, 12:02 PM
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rich herzog Group: Members Posts: 7,390 Joined: 4-April 03 From: Salted Roads, PA Member No.: 513 Region Association: None |
I think the big reservoir feeds the front brakes. And further, this is because since the front brakes have bigger pistons, and do most of the braking and thus wear more, they have a bigger reservoir requirement.
The picture shows the big reservoir feeding the front chamber of the MC. The front chamber of the tandem MC feeds the front brakes. (That's not shown on this picture, tho) But it's that way so that if the back brakes fail, you're still left with fronts. The rear piston compresses the front. BTW - if your reservoir drained with the pedal depressed, I'd be concerned about the integrity of that system's piston seals... |
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| sfrenck |
Jul 12 2011, 12:48 PM
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#3
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Member Group: Members Posts: 492 Joined: 28-February 10 From: Wilmington, DE Member No.: 11,411 Region Association: MidAtlantic Region
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QUOTE(ArtechnikA @ Jul 12 2011, 02:02 PM)  The picture shows the big reservoir feeding the front chamber of the MC. The front chamber of the tandem MC feeds the front brakes. (That's not shown on this picture, tho) But it's that way so that if the back brakes fail, you're still left with fronts. The rear piston compresses the front. The large chamber is on the "back" of the reservoir, connects to hose 12, which is connected to the back chamber of the MC? |
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| ArtechnikA |
Jul 12 2011, 12:53 PM
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#4
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rich herzog Group: Members Posts: 7,390 Joined: 4-April 03 From: Salted Roads, PA Member No.: 513 Region Association: None |
QUOTE(sfrenck @ Jul 12 2011, 02:48 PM) The large chamber is on the "back" of the reservoir, connects to hose 12, which is connected to the back chamber of the MC? I was just going from the picture - in which it appears that the 'Hose 11' side of the reservoir is bigger. I'll have to go look at an actual reservoir tonight. You are saying that the big end of the reservoir contains the small chamber ? Interesting... |
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| sfrenck |
Jul 12 2011, 02:36 PM
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#5
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Member Group: Members Posts: 492 Joined: 28-February 10 From: Wilmington, DE Member No.: 11,411 Region Association: MidAtlantic Region
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QUOTE(ArtechnikA @ Jul 12 2011, 02:53 PM) QUOTE(sfrenck @ Jul 12 2011, 02:48 PM) The large chamber is on the "back" of the reservoir, connects to hose 12, which is connected to the back chamber of the MC? I was just going from the picture - in which it appears that the 'Hose 11' side of the reservoir is bigger. I'll have to go look at an actual reservoir tonight. You are saying that the big end of the reservoir contains the small chamber ? Interesting... Just looked at mine, the front section seems smaller when you look at it from above thru the cap. Maybe it's one of those "which line is longer" games >-----< <-----> by Porsche engineers (meaning they are the same volume - and we're back to the it doesn't matter answer) |
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Posts in this topic
sfrenck Brake reservoir hoses / sections Jul 11 2011, 04:32 PM
ArtechnikA assemble it just like that picture and you will be... Jul 11 2011, 06:01 PM
sfrenck
assemble it just like that picture and you will b... Jul 11 2011, 06:07 PM sfrenck Bump...
Common guys - someone has to know this o... Jul 12 2011, 11:38 AM SirAndy someone has to know this one.
I don't know bu... Jul 12 2011, 11:44 AM SirAndy But it's that way so that if the back brakes f... Jul 12 2011, 01:38 PM toolguy OK in this case, the drawing is the way it is sup... Jul 25 2011, 09:38 AM 914Mels Virtually all cars will have larger brakes on the ... Jul 25 2011, 01:29 PM |
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