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Noisy Spoiler Lube

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Old 12-17-2011, 08:30 PM
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s2racer
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Default Noisy Spoiler Lube

Hi guys...after checking all of the posts on fixing a noisy spoiler, I have a couple of questions. What type of grease to use on the worm gear (that won't deteriorate the plastic housing-will spray lithium grease be sufficient?), and how do you lube the cable? Mine has unwound somewhat at each end to keep it in the cable housing. Speaking of the cable housing, any suggestions to replace the coating on it? I would assume moisture can get to the cable if the coating is gone as mine is.

Thanks in advance.

Marc
Old 12-17-2011, 08:51 PM
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IXLR8
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Originally Posted by s2racer
Speaking of the cable housing, any suggestions to replace the coating on it? I would assume moisture can get to the cable if the coating is gone as mine is.
If you are referring to the sheathing on the spiral wound cable casing, you can replace it with quality heat shrink.

The type you want to get is very rubbery and has a shrink ratio of 4:1. Cut all the old sheathing off first and make sure you extend the new sheathing to the ends as much as possible.

Last edited by IXLR8; 12-29-2011 at 10:56 PM. Reason: typo
Old 12-17-2011, 09:34 PM
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Ed Hughes
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Have you looked into replacing the bearing? That is usually the culprit.
Old 12-17-2011, 10:43 PM
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Thanks Alex...an excellent suggestion. Hi Ed...I am in the middle of replacing the bearing (a very easy DIY), but looking for suggestions for lube for inside the plastic gear housing.

Marc
Old 12-17-2011, 11:08 PM
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IXLR8
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Originally Posted by s2racer
I am in the middle of replacing the bearing (a very easy DIY), but looking for suggestions for lube for inside the plastic gear housing.
I've been using this Bel-Ray grease since the mid 80s for the applications it is meant for.

Available at most motorcycle shops.
Old 12-17-2011, 11:13 PM
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Ed Hughes
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I used some Valvoline synthetic, as I recall.
Old 12-17-2011, 11:20 PM
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I was thinking of a silicon grease, but I guess the synthetic wouldn't harm the plastic either.

Thanks
Old 12-18-2011, 05:03 AM
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ToreB
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I have made a DIY page for the spiler gear repair
Cheers,
Tore
Old 12-18-2011, 07:48 AM
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ble2011
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Originally Posted by IXLR8
If you are referring to the sheathing on the spiral would cable casing, you can replace it with quality heat shrink.

The type you want to get is very rubbery and has a shrink ratio of 4:1. Cut all the old sheathing off first and make sure you extend the new sheathing to the ends as much as possible.
I wanted to do this for some time, but was'nt sure how/where to find the "quality heat shrink". Can you help?
Old 12-18-2011, 10:15 AM
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IXLR8
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Originally Posted by ble2011
I wanted to do this for some time, but wasn't sure how/where to find the "quality heat shrink". Can you help?
Best to go to an electronics supply store and feel the heat shrink. The cheaper stuff feels like hard plastic and shines; the rubbery heat shrink feels softer and does not shine. The rubbery heat shrink also bends nicely whereas the other type is stiff. You also want to use a size that when shrunk down, is a tight fit yet when applied is as large as possible; that makes for a thicker layer when shrunk down.

Maybe someone can chime in on what the different types are made of.
Old 12-29-2011, 09:56 PM
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the fix worked great. No coffee grinder from the spoiler. However, after a couple of days, the cable in the housing broke at the motor connection. Does anyone know if that cable can be replaced, or am I doomed to buying the entire mechanism (or maybe say the hell with it and get a duck tail:-)

marc
Old 12-30-2011, 10:13 AM
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IIRC, the spoiler motor and cable (and possibly the motor) are one part from Porsche. Now that you've seen them apart you know they really are two separate pieces held together by the bond at the transmission case.

If you price that part at the dealer it's expensive. First thing I'd consider is fabricating a replacement cable.
Old 12-30-2011, 12:36 PM
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Thanks Jeff.....I may give that a try. Or convince myself I need to get a fixed spoiler :-)

Marc
Old 12-30-2011, 04:18 PM
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Is that cable the same or similar to the old sunroof cables from the seventies or eighties Porsche?

Just a question and could provide the right cable?

Bert
Old 12-30-2011, 04:46 PM
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You might try finding a speedometer cable that has the right sized end (usually square), then cutting it to length and modifying the cut end as required. The diameter of the cable would have to be the same to handle the torque.


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