Hi all. At the conclusion of a 60 minute Interstate ride my 2001 M750 rear brake pedal went all the way down. No braking action at all. I dismounted and discovered the pads were cooked down to the metal, the rotor was lightly scored and full of pad material and skanky looking, and surprisingly, the bleed screw is missing. I'm thinking that it makes more sense to install a new caliper as apposed to attempting to rebuild it.
This is not my first Duc, but is my first Monster. Anyone have comments about any known issues with calipers OR master cylinders? Should I pop for both? Any comments about pulling the rotor and cleaning it thourougly and scuffing it up with 80 grit? ;D
OK, ONLY the bleed nipple is gone and need to replace pads and rotor?
Then just get these parts and fresh brake fluid; if you want to replace all parts, you might be talking about $500.00 total vs $300 +/-
Caliper rebuild parts are next to nonexistent in the US. You might find a bleeder screw somewhere. You should be able to find a used caliper on ebay for fairly short money.
The real question is what caused the issue. Check the free play at the pedal. You want ~1,5-2.0mm. I'm thinking the bleed port in the master was blocked due to insufficient free play, and as the fluid heated from the pads dragging it increased pressure in the system causing your issue.
Not uncommon. Aftermarket rearsets not set up right or people thinking the pedal freeplay is slop instead of freeplay must cook a few rear brakes.
I like your suggestion, but I fear that I'll end up cleaning everything up and still need to replace the damn caliper. Hmmm. I gotta sleep on this one.
The thing that sucks is I need to mail order all this stuff and I'm winding down the riding season here in Illinois. This could potentially take a couple of weeks…
This is all OEM stuff by the way. All original, and only 3700 miles on the bike.
Used caliper... http://www.ebay.com/itm/2001-01-DUCATI-MONSTER-600-M600-BREMBO-REAR-BRAKE-CALIPER-WITH-BRACKET-/252028243611?hash=item3aae0dce9b:g:Yb8AAOSwPcVVpp39&vxp=mtr (http://www.ebay.com/itm/2001-01-DUCATI-MONSTER-600-M600-BREMBO-REAR-BRAKE-CALIPER-WITH-BRACKET-/252028243611?hash=item3aae0dce9b:g:Yb8AAOSwPcVVpp39&vxp=mtr)
M750, then this are the parts:
http://motowheels.com/i-23899770-brembo-rear-caliper-p32f-32mm-piston-20-5161-43-gold.html (http://motowheels.com/i-23899770-brembo-rear-caliper-p32f-32mm-piston-20-5161-43-gold.html) >> also in black silver
http://motowheels.com/i-8575409-brembo-banjo-bolt-crush-washers-pair.html (http://motowheels.com/i-8575409-brembo-banjo-bolt-crush-washers-pair.html)
http://motowheels.com/i-6922265-ferodo-platinum-organic-rear-brake-pads-brembo-early-rear-caliper.html (http://motowheels.com/i-6922265-ferodo-platinum-organic-rear-brake-pads-brembo-early-rear-caliper.html)
and just in case, the rotor
http://www.monsterparts.com/pc/DF636/CD-Brakes/DF636.html (http://www.monsterparts.com/pc/DF636/CD-Brakes/DF636.html)
Good DOT4 brake fluid and since you're there, flush the fronts and clutch
Also, might be a good idea to go here, http://www.ducatimonsterforum.org/index.php?www;board=14 (http://www.ducatimonsterforum.org/index.php?www;board=14)
[thumbsup] Great price on new parts.
Check out our sponsors like the sponsor below if you dont trust used parts. They might be able to help you quick.
I would grab a caliper, pads and disc if you think the disc looks scored or warped.
One option I use is car brake specialists to rebuild calipers, etc, but if calipers up there are not expensive then grab a new one. Just bleed it carefully and set the pedal freeplay.
Strange how the nipple is gone.
I wouldn't put new parts on it if it were mine.
Those brake calipers are fool proof if they don't get cooked. I never use the rear brake anyway. :P
The OP has options.
edit...that is a good price on a new caliper...
another option... http://www.ebay.com/itm/Ducati-Brembo-P32-F-rear-brake-caliper-seal-repair-kit-most-93-02-Monster-SS-/161559553691?hash=item259db3269b:g:hQkAAOxyrx5TkDQA&vxp=mtr (http://www.ebay.com/itm/Ducati-Brembo-P32-F-rear-brake-caliper-seal-repair-kit-most-93-02-Monster-SS-/161559553691?hash=item259db3269b:g:hQkAAOxyrx5TkDQA&vxp=mtr)
Any signs of excessive heat? Could be you lost pressure simply because the bleeder backed out and you just noticed the worn pads and rotor. Before buying a caliper I would replace the bleeder, available at any decent auto parts store. Off hand, I don't know the size. Bleed, make sure fluid returns back to the reservoir when the brake is released and there is no excessive drag. Do check free play, 1.5-2mm. Yep, get a new rotor.