The New And Improved Unofficial R65 Forum V2
Technical Discussion => BMW Technical Q&A, Primarily R65 => Topic started by: Matt Chapter on March 17, 2016, 09:12:08 AM
-
Not much of a decision here. The other pad had quite a bit more thickness to it, but my caliper mounting bolts were slightly loose. Can't decide if the one piston might be a wee bit stuck or what. The thicker pad also had an uneven wear pattern front to back so it would seem the piston was not applying even pressure.
(https://farm2.staticflickr.com/1689/25211220873_d95dba2f20_z.jpg) (https://flic.kr/p/EpQ6BX)
Ordered some new EBC FA77 from Bob's BMW yesterday, and they say they've already shipped. I got almost exactly 10k miles out of these BMW Brembo pads.
-
Yes, there could be a sticking piston due to a failed o-ring or some sludge causing a drag on the piston. Maybe an infestation of wire ants.
Pull apart the caliper and clean it up. An overhaul kit for the Brembo F08 from MG Cycle is just $16.00 and change. Includes new bolts plus that tiny o-ring some folks miss.
http://www.mgcycle.com/index.php?main_page=product_info&cPath=110_115&products_id=591
-
What calipers do you have, from the look of your pad, you have Brembo calipers .
I may be mistaken, but FA77 pads are for ATE calipers and won't work on Brembo calipers .
If you have Brembo's you need FA18 pads .
-
What calipers do you have, from the look of your pad, you have Brembo calipers .
I may be mistaken, but FA77 pads are for ATE calipers and won't work on Brembo calipers .
If you have Brembo's you need FA18 pads .
Good catch, Bob. I missed the pad number. Matt's bike is a 1986 model so Brembo calipers and FA18 pads it is.
Matt, my experience is that Bob's BMW is good about returns and swaps. Still out some postage and a few more days off the bike. OK to miss the SxSW traffic.
-
Plan to clean the dirt into the caliper and use a Scotch Brite pad on the pistons to ensure they come back properly.
Be gentle with the Scotch Brite pad and remove as much dirt as you can with air before playing with Mr Green !
I had a piston seized because it had a fine line of dirt preventing it to come back into the cylinder. The disc brake became awfully hot and the pad wore out very very fast...
They took me 5 minutes each side to clean.
-
Bob_Roller wrote on 03/17/16 at 10:59:38:
What calipers do you have, from the look of your pad, you have Brembo calipers .
I may be mistaken, but FA77 pads are for ATE calipers and won't work on Brembo calipers .
If you have Brembo's you need FA18 pads .
Good catch, Bob. I missed the pad number. Matt's bike is a 1986 model so Brembo calipers and FA18 pads it is.
I've been down this road before! I definitely have a Brembo caliper, but it definitely takes the FA77 pads, not the FA18. This time I even measured the pads and consulted the EBC sales guide. http://ebcbrakes.com/Assets/ecatalogues/2016_USA_Motorcycle_Catalogue/USA_Motorcycle_Catalogue_2016.html Page 221 has the FA18 dimensions, page 239 has the FA77 dimensions. I also cross-referenced part numbers! My last receipt, and realoem.com both say I need part number 34112331177, which motobins shows to be 60mm wide.
Not sure why getting brake pads for my R65 is such a kerfluffle, but using the FA18s actually was a proximate cause of getting the Spiegler rotor. [smiley=wall.gif]
-
It's not the width, or any dimension of the pads, they are the same, the difference is the top of the back plate, the FA77, has two ' ears ' where the pine go through and a large spring that presses down on the pads the back plate on the FA77 dips down to just a few mm's above the friction material, the FA18 has two holes for the pins, but the back plate goes straight across, with a small notch in the middle .
Well found something interesting, I went to Dennis Kirk motorcycle parts and they have pictures of the FA77 and FA18 pads and they are the same, no difference, even have two different part numbers on the back side of the plate .
I wonder if the springs on the ATE calipers are not available and you can use the set up from the Brembo calipers on them ?????? :o
Need to go to the garage and check this out !!!! :D
I went to the EBC application site, there is no listing for R65's with ATE calipers .
There is an application for the R45 with ATE calipers and the pads are FA57 .
I'm sure these would be applicable to the R65 .
So, the FA77's will work on a Brembo caliper !!!!
-
Pads on my ATE caliper are FA57's and I can't imagine it's different on an ATE equipped R65.
On the pistons sticking I have never serviced a caliper and found that both pistons pump out together. One of them inevitably sticks and the other moves and that must translate into unequal pressure on each pad. I put a G cramp on the piston that moves and exercise the other one until it frees up. I find that often needs doing several times in the life of a set of pads. The trigger for me to do this is as soon as I detect the pads are causing drag on the disc when the wheel is spun by hand.
-
Got the new pads delivered yesterday, install was fairly easy except for trying to shoehorn a clamp onto the pistons to retract them without undoing the brake pipe. A couple of photos since there was a question about the pad retaining spring..
(https://farm2.staticflickr.com/1661/25996499355_3296afcbf6_z.jpg) (https://flic.kr/p/FBdRy8)
(https://farm2.staticflickr.com/1560/25970750146_4cff03c7a4_z.jpg) (https://flic.kr/p/FyWTdf)
-
I was curious, if you could use the pads and hardware from a Brembo caliper , on an ATE caliper .
-
Got the new pads delivered yesterday, install was fairly easy except for trying to shoehorn a clamp onto the pistons to retract them without undoing the brake pipe. A couple of photos since there was a question about the pad retaining spring..
(https://farm2.staticflickr.com/1661/25996499355_3296afcbf6_z.jpg) (https://flic.kr/p/FBdRy8)
(https://farm2.staticflickr.com/1560/25970750146_4cff03c7a4_z.jpg) (https://flic.kr/p/FyWTdf)
Which pads did you wind up getting Matt?
-
Which pads did you wind up getting Matt?
I believe I got the FA77 but would have to double check my records. I'll try to remember tonight when I'm at home.
-
Good info here...it's pad replacement time again (86 R65).