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Old 03-19-2009, 01:33 AM
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Brake DIY question

Does the caliper guide bolts (not the threads) need to be lube? If so, with what? The brake DIY article didn't mention about having the guide bolts lubed during reassembly. Thanks.
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Old 03-19-2009, 08:15 AM
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i've never lubed them
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Old 03-19-2009, 08:27 AM
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nm

Last edited by mthexuma; 03-19-2009 at 08:55 AM.
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Old 03-19-2009, 08:46 AM
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Never lube them! Clean them very well and reinstall and torque properly.
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Old 03-19-2009, 06:21 PM
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alway lube the guides. lightly but lube them
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Old 03-19-2009, 06:44 PM
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Nope totally wrong. NEVER lube them. Reference below. ONLY CLEAN GUIDE SCREWS; DO NOT GREASE. You don't want these suckers to come out for any reason. Better to have them frozen in place then to come out. That's why they even have their own dust sleeves and caps, keeping them clean.
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Last edited by X5 Meister; 03-20-2009 at 01:08 AM.
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Old 03-19-2009, 07:02 PM
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BMW recommends you do not lube them. Lube can hold contaminants in the guide should any get in. This may or may not be a valid argument for other brake designs. Follow the manufacturer's recommendation.
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Old 03-19-2009, 08:47 PM
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bmw also says you need new rotors every time you need pads. they are also responsible for...poor design of the front sway bar links, burying the CCV on an 3.0 under the intake. then not wanting to admit the ccv is an issue but charging a grand to fix a problem that isn't there. inadequate outer cv boots. and oh ya that pesky negative camber issue that they say can be adjusted with a toe adjusment.and let's not forget the failed intake boot design. do what you think is best. in the end a bmw is a car and most of the same principals apply as with any other car. all i know is i have owned several Bimmers and while i like my X5 it really hasn't shown me much compared to my e39s and e36s
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Old 03-19-2009, 11:10 PM
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Correct. See above page from the TIS.

Quote:
Originally Posted by rayxi
BMW recommends you do not lube them. Lube can hold contaminants in the guide should any get in. This may or may not be a valid argument for other brake designs. Follow the manufacturer's recommendation.

Last edited by X5 Meister; 03-20-2009 at 12:23 AM.
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Old 03-19-2009, 11:12 PM
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BMW does NOT say you need new rotors every time you need pads. See reference page from the TIS. There is also an SIB 340508 discussing this in detail see attached. If you claim they do, post the bulletin or other document that shows it. Otherwise you are making this stuff up as you go along and I disagree with virtually everything you've written so far, having owned BMW's for over 40 years.

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Originally Posted by panzercommander
bmw also says you need new rotors every time you need pads. they are also responsible for...poor design of the front sway bar links, burying the CCV on an 3.0 under the intake. then not wanting to admit the ccv is an issue but charging a grand to fix a problem that isn't there. inadequate outer cv boots. and oh ya that pesky negative camber issue that they say can be adjusted with a toe adjusment.and let's not forget the failed intake boot design. do what you think is best. in the end a bmw is a car and most of the same principals apply as with any other car. all i know is i have owned several Bimmers and while i like my X5 it really hasn't shown me much compared to my e39s and e36s
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File Type: pdf SIB 34 05 08.pdf (81.9 KB, 4766 views)

Last edited by X5 Meister; 03-23-2009 at 04:25 PM.
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