---------------------------------------------------------- RV10-List Digest Archive --- Total Messages Posted Sun 09/30/18: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 09:52 AM - Brake Issue (mhealydds) 2. 10:12 AM - Re: Brake Issue (John Miller) 3. 10:12 AM - Re: Brake Issue (Jesse Saint) 4. 10:16 AM - Re: Brake Issue (Carl Froehlich) 5. 10:59 AM - Re: Brake Issue (Kelly McMullen) ________________________________ Message 1 _____________________________________ Time: 09:52:09 AM PST US Subject: RV10-List: Brake Issue From: "mhealydds" On my second condition inspection and came up with brake issue I thought I would throw out to experts before I call Grove tomorrow. I was inspecting my right brake and noticed excessive wear on the break pad on inboard/piston side...much more than opposite pad or pads on left brakes. I then noticed that the piston on the brake is in a extended position which accounts for uneven wear. Replacing pads no big deal, but I need to figure out why piston stays out (it won't push back in). I have pulled brake pedals all the way aft and doesn't seem to help. This does not happen on left brake (piston and wear are normal). Don't see any leaks. It was braking fine on all flights since last condition inspection and I didn't notice this at last condition inspection. I was hoping for suggestions or thoughts on the issue...hoping to not have to drain fluid. I have attached photo. Thanks. Matt Read this topic online here: http://forums.matronics.com/viewtopic.php?p=483474#483474 Attachments: http://forums.matronics.com//files/hs97czxpqw2zzxzrvvpfg_126.jpg ________________________________ Message 2 _____________________________________ Time: 10:12:46 AM PST US From: John Miller Subject: Re: RV10-List: Brake Issue Try pulling the piston out and use a little scotch brite on the piston and the cylinder. Sounds like a bit of grit is keeping it from moving freely. grumpy N184JM > On Sep 30, 2018, at 11:50 AM, mhealydds wrote: > > > On my second condition inspection and came up with brake issue I thought I would throw out to experts before I call Grove tomorrow. I was inspecting my right brake and noticed excessive wear on the break pad on inboard/piston side...much more than opposite pad or pads on left brakes. I then noticed that the piston on the brake is in a extended position which accounts for uneven wear. Replacing pads no big deal, but I need to figure out why piston stays out (it won't push back in). I have pulled brake pedals all the way aft and doesn't seem to help. This does not happen on left brake (piston and wear are normal). Don't see any leaks. It was braking fine on all flights since last condition inspection and I didn't notice this at last condition inspection. I was hoping for suggestions or thoughts on the issue...hoping to not have to drain fluid. I have attached photo. Thanks. Matt > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=483474#483474 > > > > > Attachments: > > http://forums.matronics.com//files/hs97czxpqw2zzxzrvvpfg_126.jpg > > > > > > ________________________________ Message 3 _____________________________________ Time: 10:12:50 AM PST US From: Jesse Saint Subject: Re: RV10-List: Brake Issue Its common to have to disassemble the caliper and replace the oring on the piston when the brake linings get low. I would pull it off and replace the oring and look for any problems in working the piston in the caliper. Jesse Saint Saint Aviation, Inc. 352-427-0285 jesse@saintaviation.com Sent from my iPad > On Sep 30, 2018, at 12:50 PM, mhealydds wrote: > > > On my second condition inspection and came up with brake issue I thought I would throw out to experts before I call Grove tomorrow. I was inspecting my right brake and noticed excessive wear on the break pad on inboard/piston side...much more than opposite pad or pads on left brakes. I then noticed that the piston on the brake is in a extended position which accounts for uneven wear. Replacing pads no big deal, but I need to figure out why piston stays out (it won't push back in). I have pulled brake pedals all the way aft and doesn't seem to help. This does not happen on left brake (piston and wear are normal). Don't see any leaks. It was braking fine on all flights since last condition inspection and I didn't notice this at last condition inspection. I was hoping for suggestions or thoughts on the issue...hoping to not have to drain fluid. I have attached photo. Thanks. Matt > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=483474#483474 > > > > > Attachments: > > http://forums.matronics.com//files/hs97czxpqw2zzxzrvvpfg_126.jpg > > > > > > ________________________________ Message 4 _____________________________________ Time: 10:16:41 AM PST US From: Carl Froehlich Subject: Re: RV10-List: Brake Issue Odds are you rolled the O ring on the puck - so the puck no longer moves freely. Replace it, fill and bleed. I had this happen on one side at about the 100 hour point. First indication was a very worn tire after I noticed one brake dragging. These puck O rings are good to have in your airplane stuff I carry with me box, along with a set of brake pads. Carl > On Sep 30, 2018, at 12:50 PM, mhealydds wrote: > > > On my second condition inspection and came up with brake issue I thought I would throw out to experts before I call Grove tomorrow. I was inspecting my right brake and noticed excessive wear on the break pad on inboard/piston side...much more than opposite pad or pads on left brakes. I then noticed that the piston on the brake is in a extended position which accounts for uneven wear. Replacing pads no big deal, but I need to figure out why piston stays out (it won't push back in). I have pulled brake pedals all the way aft and doesn't seem to help. This does not happen on left brake (piston and wear are normal). Don't see any leaks. It was braking fine on all flights since last condition inspection and I didn't notice this at last condition inspection. I was hoping for suggestions or thoughts on the issue...hoping to not have to drain fluid. I have attached photo. Thanks. Matt > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=483474#483474 > > > > > Attachments: > > http://forums.matronics.com//files/hs97czxpqw2zzxzrvvpfg_126.jpg > > > > > > ________________________________ Message 5 _____________________________________ Time: 10:59:06 AM PST US Subject: Re: RV10-List: Brake Issue From: Kelly McMullen What others have said. I don't know with the Grove calipers, but the Cleveland calipers used on the RV-10 are somewhat prone to having the piston cock a little to one side, and you can see it on wear. It also results in brake fluid leaking well before the pad is worn out. I've not had that problem with Clevelands on other aircraft, but this particular caliper seems a little deficient in that regard. New O-ring, new brake pad, and a good dry lube (silicone or similar) on the pins the caliper floats on. If it isn't floating freely that will cause wear on one pad. On 9/30/2018 10:14 AM, Carl Froehlich wrote: > > Odds are you rolled the O ring on the puck - so the puck no longer moves freely. Replace it, fill and bleed. I had this happen on one side at about the 100 hour point. First indication was a very worn tire after I noticed one brake dragging. > > These puck O rings are good to have in your airplane stuff I carry with me box, along with a set of brake pads. > > Carl > >> On Sep 30, 2018, at 12:50 PM, mhealydds wrote: >> >> >> On my second condition inspection and came up with brake issue I thought I would throw out to experts before I call Grove tomorrow. I was inspecting my right brake and noticed excessive wear on the break pad on inboard/piston side...much more than opposite pad or pads on left brakes. I then noticed that the piston on the brake is in a extended position which accounts for uneven wear. Replacing pads no big deal, but I need to figure out why piston stays out (it won't push back in). I have pulled brake pedals all the way aft and doesn't seem to help. This does not happen on left brake (piston and wear are normal). Don't see any leaks. It was braking fine on all flights since last condition inspection and I didn't notice this at last condition inspection. I was hoping for suggestions or thoughts on the issue...hoping to not have to drain fluid. I have attached photo. Thanks. Matt >> >> >> >> >> Read this topic online here: >> >> http://forums.matronics.com/viewtopic.php?p=483474#483474 >> >> >> >> >> Attachments: >> >> http://forums.matronics.com//files/hs97czxpqw2zzxzrvvpfg_126.jpg >> >> >> >> >> >> > > > > > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rv10-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RV10-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/rv10-list Browse Digests http://www.matronics.com/digest/rv10-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.