Brake problem

Rusnsc · #1 (**permalink**) 3 Weeks Ago

Hey all, I just changed all pads and discs on my 99 1200. I found the rear caliper pistons stuck extended, I got them freed up and cleaned up. Bled the system. The front pistons seemed to operate normally and were easily compressed. After my initial shake down ride I had the following. The rear disc was warm quite warm to the touch. The front right disc was cool and the left was warm to the touch. I either have 2 calipers sticking or I have 1 not working correctly. I just rode around the neighborhood testing the brake. I stopped just fine. Any suggestions? I appreciate any advice. May have to tear down again and check all calipers

rgbeard · #2 (**permalink**) 3 Weeks Ago

Go to EBay - buy a set of Hyabusa Calipers with pads. Replace fronts.

Re-Test everything again.

You'll throw the original calipers in the trash.

ervdrvr1 · #3 (**permalink**) 2 Weeks Ago

Rusty,
Rear brake allways drags a little(non-floating disk, push/pull caliper). I would pull the caliper, clean and lube the slides and pins with copper grease. Inspect the pad retainer pins, if grooved real bad, replace with stainless pins. Front brakes may just need to be re-bled as long as all the pistons are free and clean. Alcon/Tokiko six pots do stop better, but as long as the stock 4 pots are working I wouldn't spend the money 'cause they work just fine(I can lift the real wheel with my stockers, no prob).
Hope this helps.

Erv
Deep in the Heart of Texas!!

DuckMan001 · #4 (**permalink**) 2 Weeks Ago

Originally Posted by rgbeard

Go to EBay - buy a set of Hyabusa Calipers with pads.

Which model, or does it matter?

Rusnsc · #5 (**permalink**) 2 Weeks Ago

Hey Erv I appreciate the advice. I did go back and bleed the front a bit more and all seems to be working fine. When I changed the rear I cleaned everything up real good. The pins while I didn't see any grooves yet they were quite dirty with some galling(minor) and took a good bit of cleaning. As you suggested I lubed everything up well with copper grease. I seem to remember reading the rear caliper has a bad habit of freezing up. Will keep an eye on it. I am happy with the braking now that they are working well. Took a ride in the mountains this past weekend on some good twisty roads and have no complaints. Thanks much..ride safe.

ervdrvr1 · #6 (**permalink**) 2 Weeks Ago

Rusty,
Hey, no prob. Yea, you do need to keep an eye on the rear caliper. I take mine apart once a year to clean and lube. Push the piston out appx 1/8" to clean around it(the crap likes to build up there) to keep it free. Also, keep an eye on the pads 'cause they will wear faster than the fronts. My rear pads last appx 10000-12000 miles. Fronts should last appx 20000 miles.

Be cool, be safe, don't put your fingers where you won't put your face!

Erv
Deep in the Heart of Texas!!

ervdrvr1 · #7 (**permalink**) 2 Weeks Ago

DuckMan,

Tokico 6 pots from:
ZX6R 98-02
ZX6RR 02
ZX7R 96-03
ZRX 11 and 12 99-04
ZX12R 00-03
ZX9R 98-03
Suzuki GSX1300R Hayabusa all years 99-06

Alcon 6 pots from:
Daytona Super III/D1200 Special Edition
I think some Yamaha's, but not sure models/years.

Erv
Deep in the Heart of Texas!!

gararnett · #8 (**permalink**) 2 Weeks Ago

BTW, Busa brakes usually go for higher on ebay, usually $100+ for the pair. I got my ZX6R for $25 for the set. If you are in doubt if a set of 6piston brakes will work, look up their aftermarket(doesn't matter what brand, just use the same for both bikes) replacement pad part number and cross it with the number of a known fit (Busa for example). If the only differing part of the part number is the last letter or letters, they will fit as that last letter combination is usually the compound of the brake material, and the number is the fitment in the caliper (i.e. a hayabusa and a ZX6RR use the same brake with different compound brake pad). It's how I figured it out before anyone posted it here or on the Trophy list.