 Front calipers stuck, what to do? |
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| buhs914 |
 Feb 22 2010, 03:34 AM
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#1
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Not So Newbie  Group: Members Posts: 331 Joined: 16-June 09 From: Buckeye, AZ Member No.: 10,478 Region Association: Southwest Region  |
So a couple weeks back when i took my car for a test drive, i noticed that the front brakes were dragging on the rotors. I immediately took the car back and put it up on jackstands and removed the front wheels. Upon inspection i noticed that the rotors would not spin. Should i take the calipers off and rebuild? or is there something else i could do?
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Replies(1 - 5)
| davep |
Feb 22 2010, 07:47 AM
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#2
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914 Historian Group: Benefactors Posts: 5,143 Joined: 13-October 03 From: Burford, ON, N0E 1A0 Member No.: 1,244 Region Association: Canada  |
There is not much choice. First, check the easy part by opening the top bleed nipples and seeing if that relieves pressure on the pads. If the rotors turn freely, then it is most likely that the rubber lines have swollen shut inside; that tends to tun them into one way valves. Replace with new rubber lines; usually 10 to 20 years is the maximum useful life of a rubber line. The other possibility is that the brake pedal is not returning to rest position; if so, then the pedal cluster needs rebuilding.
If relieving the hydraulic pressure does not allow the rotors to spin freely, then the calipers must be rebuilt. It is almost mandatory that both calipers be done at the same time. Eric Shea at PMB Performance has a great rebuild service, or you may be able to do the job yourself. |
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| underthetire |
Feb 22 2010, 09:58 AM
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#3
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914 Guru Group: Members Posts: 5,062 Joined: 7-October 08 From: Brentwood Member No.: 9,623 Region Association: Northern California |
And if the calipers are stuck, there are tricks to getting the pistons out if you DIY. So feel free to ask here before you proceed.
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| Eric_Shea |
Feb 22 2010, 03:42 PM
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#4
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PMB Performance Group: Admin Posts: 19,275 Joined: 3-September 03 From: Salt Lake City, UT Member No.: 1,110 Region Association: Rocky Mountains  |
How long has it been sitting?
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| buhs914 |
Feb 22 2010, 07:43 PM
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#5
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Not So Newbie Group: Members Posts: 331 Joined: 16-June 09 From: Buckeye, AZ Member No.: 10,478 Region Association: Southwest Region |
QUOTE(Eric_Shea @ Feb 22 2010, 02:42 PM)  How long has it been sitting? it's been sitting for a total of around 6 months. I drove it once or twice since then. I'll have to do the above recommendations and see where that gets me. |
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| Eric_Shea |
Feb 22 2010, 11:31 PM
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#6
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PMB Performance Group: Admin Posts: 19,275 Joined: 3-September 03 From: Salt Lake City, UT Member No.: 1,110 Region Association: Rocky Mountains |
If they are still stuck; it's probably the calipers. The swollen lines will release the pressure over time releasing the calipers.
So, still stuck = rebuild them. Release after a short time = new lines. |
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