Rear brake drags (sometimes) Advice? |
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Rear brake drags (sometimes) Advice? |
Porsche Rescue |
Feb 17 2004, 10:14 AM
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#1
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Saving and Enjoying Old Porsches Group: Members Posts: 2,978 Joined: 31-December 02 From: Bend, Oregon Member No.: 64 Region Association: None |
When I got the car the right rear e-brake cable was disconnected from the caliper. Now I know why. The brake drags but not always. I intend to check the venting clearance first but it seems to me that if that is the problem it should not come and go. Is it likely that something is hanging up in the caliper (e-brake mechanism? pistons?) or could the cable be sticking sometimes? Or all of the above? Any advice appreciated.
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Mark Henry |
Feb 17 2004, 10:29 AM
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#2
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
"The brake drags but not always."
One suspect could be an old brake line hose that has swelled shut, it would push fluid through but it won't return proper. |
mike_the_man |
Feb 17 2004, 10:55 AM
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#3
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I like stuff! Group: Members Posts: 1,338 Joined: 11-June 03 From: Regina, Saskatchewan, Canada Member No.: 809 |
Could be a sticky e-brake cable. Or, could the spreader spring be missing/broken? I'm not sure how much they really do, in any case. Just a couple of suggestions. I am by no means a brake expert. (I still haven't got mine working right)
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RocknRollFrenzy |
Feb 17 2004, 12:34 PM
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#4
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Member Group: Members Posts: 94 Joined: 3-November 03 From: Santa Cruz, CA Member No.: 1,305 |
if it only drags when the cable is connected, then the problem is definitely in the e-brake linkage somwhere....i'd start by checking the cable. could be sticking/catching on something......pull out your drivers seat and take off the little cover just in front of where the cable runs through the fire wall. you might find that one side is pulling more than the other at the linkage here. you might also make sure that you're releasing the e-brake lever all the way. it could just be that your hand is bumping into something from time to time and you think its released before it really is. its a pretty tight space, and i've had that problem a couple times......hand bumps into the floor/edge of the seat before the brake is released all the way.
its probably not a spreader spring. i haven't had one on my left rear for a while, and it hasn't caused the brake to stick. for those more in the know than i, how important are the spreader springs?? should i replace the missing one? it hasn't seemed to have any adverse effects. (yet anyway) |
914ghost |
Feb 17 2004, 12:56 PM
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#5
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BOB Group: Members Posts: 406 Joined: 25-November 03 From: Wenatchee Washington Member No.: 1,387 |
QUOTE When I got the car the right rear e-brake cable was disconnected from the caliper My car is ezzactly the same. I had to lube the e-brake arm a whole bunch - at the caliper- it turns out it was not returning the last little smidge causing the brake to drag on that one side, I guess the PO disconnected it then pushed it back to 'released position' so it wouldn't drag. I had to pry back and forth and lube to get it loose enough to return. I also had to adjust the cable (via the cable housing) on that side to 'shorten' it. the adjustment is under the car- sorta right behind/below the drivers butt. 2 nust (you heard me- NUST!), *ahem* NUTS lock the cable housing and by changing where there are on the threaded end of the cable you change the length of it. I still get a high pitched *squeek squeek* right after releasing the ebrake and driving off. But thats life. |
Brad Roberts |
Feb 17 2004, 09:35 PM
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#6
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914 Freak! Group: Members Posts: 19,148 Joined: 23-December 02 Member No.: 8 Region Association: None |
Jim,
You have a piston sticking in the caliper. B |
swood |
Feb 17 2004, 09:44 PM
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#7
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Senior Member Group: Members Posts: 1,839 Joined: 6-February 03 From: Strong Beach Member No.: 251 Region Association: None |
So is there someone who truly sells a complete rear (and front) caliper rebuild kit? I need to get two complete sets here soon.
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Brad Roberts |
Feb 17 2004, 09:48 PM
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#8
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914 Freak! Group: Members Posts: 19,148 Joined: 23-December 02 Member No.: 8 Region Association: None |
Depends on what your definition of complete is.
I found "complete" rear kits for 9146's but havent seen a "complete" kit for the 4cyl caliper. I see kits with seals and such.. but the 9146 kit has everything but new pistons (new steel cups for the ebrake and everything) B |
Porsche Rescue |
Feb 17 2004, 09:53 PM
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#9
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Saving and Enjoying Old Porsches Group: Members Posts: 2,978 Joined: 31-December 02 From: Bend, Oregon Member No.: 64 Region Association: None |
Brad, who has the kits for the 6 rears? HPH? GPR?
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Brad Roberts |
Feb 17 2004, 09:55 PM
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#10
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914 Freak! Group: Members Posts: 19,148 Joined: 23-December 02 Member No.: 8 Region Association: None |
I can get them for you. I can't reveal that source. It took too long to find it. I'll only make 10$ on you.
They come from the east coast.. so getting them before JP's wont happen. I dont stock them. B |
Gint |
Feb 17 2004, 10:56 PM
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#11
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Mike Ginter Group: Admin Posts: 16,093 Joined: 26-December 02 From: Denver CO. Member No.: 20 Region Association: Rocky Mountains |
As long as you're ordering... two please?
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Red-Beard |
Feb 18 2004, 12:26 AM
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#12
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"Ya canna change the laws of Physics" Group: Benefactors Posts: 1,124 Joined: 11-February 03 From: Houston, TX Member No.: 288 Region Association: None |
A pair for me too
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Brad Roberts |
Feb 18 2004, 12:36 AM
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#13
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914 Freak! Group: Members Posts: 19,148 Joined: 23-December 02 Member No.: 8 Region Association: None |
Ha ha.. OK.
They are very nice kits. They arrived and it was the first time I was impressed with rebuild kits. Now if we could just get the damn pistons. They had pistons, but they where not machined correctly and they hung out of the bores 3mm when fully compressed. It would have sucked having to machine new pads to fit every time... we will get them corrected. They are stainless. B |
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