---------------------------------------------------------- Glasair-List Digest Archive --- Total Messages Posted Wed 04/19/17: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 02:58 PM - Brake O-rings need replacing every now and then (mppalmer@aol.com) 2. 05:34 PM - Re: Brake O-rings need replacing every now and then (Tom Goddard) ________________________________ Message 1 _____________________________________ Time: 02:58:55 PM PST US From: mppalmer@aol.com Subject: Glasair-List: Brake O-rings need replacing every now and then Wanted to remind everyone that the O-rings in the brake master cylinders (and the calipers) need replacing about every 10 years or so. (O-rings have a 15 year service life - from cure date. Probably less in hot climates.) There are 3 O-rings in each brake master cylinder. Two are obvious - the third is buried inside the outer shell. It's the most critical. (There might be O-rings for the tube fittings too - I haven't gotten there yet.) Might as well replace the O-rings on the brake calipers too, especially since we're free castering nose gear steering. (There's an AD on Cirrus aircraft for replacing those O-rings because you have to steer with brakes in a Cirrus too.) And while speaking of cure dates, if you have a sight gauge for the header tank and/or if you have extended fuel tanks in the tips, you need to change out the rubber coupling hose(s) there about every 10 years too. Mike Palmer <>< ________________________________ Message 2 _____________________________________ Time: 05:34:02 PM PST US From: "Tom Goddard" Subject: RE: Glasair-List: Brake O-rings need replacing every now and then Thanks Mike. -----Original Message----- From: owner-glasair-list-server@matronics.com [mailto:owner-glasair-list-server@matronics.com] On Behalf Of mppalmer@aol.com Sent: Wednesday, April 19, 2017 6:58 PM Subject: Glasair-List: Brake O-rings need replacing every now and then Wanted to remind everyone that the O-rings in the brake master cylinders (and the calipers) need replacing about every 10 years or so. (O-rings have a 15 year service life - from cure date. Probably less in hot climates.) There are 3 O-rings in each brake master cylinder. Two are obvious - the third is buried inside the outer shell. It's the most critical. (There might be O-rings for the tube fittings too - I haven't gotten there yet.) Might as well replace the O-rings on the brake calipers too, especially since we're free castering nose gear steering. (There's an AD on Cirrus aircraft for replacing those O-rings because you have to steer with brakes in a Cirrus too.) And while speaking of cure dates, if you have a sight gauge for the header tank and/or if you have extended fuel tanks in the tips, you need to change out the rubber coupling hose(s) there about every 10 years too. Mike Palmer <>< ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message glasair-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Glasair-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/glasair-list Browse Digests http://www.matronics.com/digest/glasair-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.