 Rear wheels dragging |
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| andrewmlin |
 Jul 20 2017, 05:30 PM
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#1
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'74 2.0  Group: Members Posts: 22 Joined: 20-June 11 From: San Bruno, CA Member No.: 13,220 Region Association: Northern California  |
1974 Porsche 914 2.0. My parking brake doesn't fully engage. When I'm on a hill, the car slides (with some drag). Today, I put the car up on stands and removed the rear wheels. First thing I noticed was that the rear left wheel has A LOT of drag without parking brake engaged. The rear right is better. I set the venting clearances on both the outside adjusters to .004, but the inside adjuster caps are stripped, so I'm going to have to pull off the calipers and figure that out.
Question though, how do I know if the calipers are seized? Or could it be the lines? Or simply the inner adjuster clearances? |
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| tomh |
Jul 20 2017, 07:08 PM
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#2
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Member Group: Members Posts: 322 Joined: 28-February 10 From: san jose Member No.: 11,412 Region Association: None |
You need to set the proper venting clearance.
I found a little controversy on this subject so hopefully everyone will chime in on this and you will get the correct info. |
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| Elliot Cannon |
Jul 20 2017, 07:27 PM
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#3
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914 Guru Group: Retired Members Posts: 8,487 Joined: 29-December 06 From: Paso Robles Ca. (Central coast) Member No.: 7,407 Region Association: None 
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Take the calipers off and send them here. http://www.pmbperformance.com/catalog.html
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| andrewmlin |
Jul 20 2017, 09:17 PM
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#4
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'74 2.0 Group: Members Posts: 22 Joined: 20-June 11 From: San Bruno, CA Member No.: 13,220 Region Association: Northern California |
QUOTE(Elliot Cannon @ Jul 20 2017, 05:27 PM)  Yes, I'm thinking of sending them to Eric. However, how do I know if they are seized completely? Is there a way I can test? Details please! (I'm not great at fixing cars, yet.) |
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| Rand |
Jul 20 2017, 09:33 PM
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#5
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Cross Member Group: Members Posts: 7,409 Joined: 8-February 05 From: OR Member No.: 3,573 Region Association: None |
I wish Gunn1 was here to advise.
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| andrewmlin |
Jul 20 2017, 11:43 PM
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#6
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'74 2.0 Group: Members Posts: 22 Joined: 20-June 11 From: San Bruno, CA Member No.: 13,220 Region Association: Northern California |
I'm thinking of removing one of the rear calipers so that I can whack at the adjuster cover and hopefully dislodge it. If I disconnect the brake line, can I simply plug it so that the brake fluid doesn't spill out? Or, do I have to completely empty the lines before I remove the caliper?
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| Elliot Cannon |
Jul 21 2017, 01:08 AM
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#7
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914 Guru Group: Retired Members Posts: 8,487 Joined: 29-December 06 From: Paso Robles Ca. (Central coast) Member No.: 7,407 Region Association: None
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It might be a good time to flush out and replace all the brake fluid anyway. Not hard to do. Bleeding the brakes can take a little time but there are some easy techniques to do that.
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| andrewmlin |
Jul 21 2017, 08:46 AM
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#8
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'74 2.0 Group: Members Posts: 22 Joined: 20-June 11 From: San Bruno, CA Member No.: 13,220 Region Association: Northern California |
QUOTE(Elliot Cannon @ Jul 20 2017, 11:08 PM) It might be a good time to flush out and replace all the brake fluid anyway. Not hard to do. Bleeding the brakes can take a little time but there are some easy techniques to do that. Good point Elliot. I'll try to plug first, and if that doesn't work, then I'll just flush and bleed! |
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