Front brake removel

sprintex · Post by **sprintex** » Mon Jul 16, 2007 3:55 pm

While I am waiting for the replacement sprocket, I started to replace the front brake light switch. I decided to remove the front calipers so they would be easier to bleed. Well Ok they will not come off because they will not clear the rim. So am I right in assuming you have to remove the front wheel before you remove the calipers? Or do you unbolt the brakes and while they are loose you remove the front wheel?
Sorry about all the questions.

Desmo_Demon · Post by **Desmo_Demon** » Mon Jul 16, 2007 4:03 pm

If they hit the rim before they clear the rotors, you should be able to roll the caliper while still straddling the rotor to spread the pads further apart (this pushes the pistons into the caliper), then you should have enough clearance to roll them out from the wheel, but......

DO NOT try to bleed the brakes with the calipers off of the rotors, unless you stick something between the pads. If you do not do this, you will push both pads into each other and you will have a hell of a time trying to pry them back apart when you go to reinstall them on the bike. :ugh:

sprintex · Post by **sprintex** » Mon Jul 16, 2007 4:31 pm

Thanks for the info. I was going to us my minivac to bleed but thanks for the heads up because I would have forgoten and grabed the brake lever.
How do you bleed them on the bike? Do you cut down a wrench so you can get it in there?

Desmo_Demon · Post by **Desmo_Demon** » Mon Jul 16, 2007 5:28 pm

sprintex wrote: How do you bleed them on the bike? Do you cut down a wrench so you can get it in there?

I haven't gotten to that point with my Paso Project, yet, but I was eyeing them, yesterday......actually, I almost bled them yesterday. I'll probably get around to it within the next week, though.

Finnpaso · Post by **Finnpaso** » Mon Jul 16, 2007 7:26 pm

Its easier, if You cut one 12mm wrench to 2 pieces and weld them again, like i did. Remembering, that was it just 12mm, but anyway i did such tool to access that caliper bleeding bold easier. Have U thinked to bleed/new fluids Your system from "down to up" by pushing new fluid to system from down to up and taking old fluid out from system from main sylinder??? I have noticed, that much more easier to get air out of system that way. Then surely air want stay in banjo bolt close main sylinder(if air went to system!), but leaving that to right position overnight and then pushing next morning lever softly and many times, You can see, bubbles coming out from system from main sylinder. If trying new fluid from top to down = plenty of troubles, if some air went to system: air going down/up/down/up hole time in pipes!!! This ALL is coming from, what have happened TO ME. I dont know others problems...

bf-fly · Post by **bf-fly** » Tue Jul 17, 2007 3:57 am

I just had my front wheel off the other day to put on a different set of rotors. I ran into the same problem you did, but I learned a little trick when I put them calipers back on:

Loosen the rotors!!!

Back off the 6-8 bolts about 1/8 inch so the rotors will wobble. The the calipers can be removed and replaced easily, then tighten up the rotors when done.

Post by **paso750** » Tue Jul 17, 2007 10:11 am

seems everyone has his own way to bleed hydraulic systems.
I tried a minivac but am not convinced about it.
I`m doing it the normal way, I just remove the pump and mount it to a shortened broomstick. So I can pump and hold the pump upright so the banjo bolt is not the highest point.
I never removed the calipers for that. I always got pressure very fast and it did not soften over night

btw shouldn`t the calipers easily come off when the brake pads are removed ?

G.

Desmo_Demon · Post by **Desmo_Demon** » Tue Jul 17, 2007 11:37 am

paso750 wrote:btw shouldn`t the calipers easily come off when the brake pads are removed ?

True....some people drop the brake pads out the bottom of the calipers to remove them. I've heard of guys doing this with the newer bikes, also....

I looked at the bleeder on the stock Paso calipers, and now I see what you mean!

They sure didn't put those in a location to make it easy to bleed the brakes! I don't know how I'll bleed mine. I may have to mess with it this weekend......it's starting to make me want to upgrade the calipers to the newer style, like the ones in Gerhard's picture. I have a pair of calipers from a '94 SS900. :lick:

Finnpaso · Post by **Finnpaso** » Tue Jul 17, 2007 12:40 pm

In 750 original calipers job is harder, than those, like Gerhard have. I found out, that better make suitable tool to that niple in caliper. There are much more "space" around 4 piston Brembos, than 2 pistons.... Anyway i also dont have anymore that "problem", cause i have upgrated my 750 Paso with 907 system and steel braided lines and black colour rare calipers from 907IE.

Post by **paso750** » Tue Jul 17, 2007 1:24 pm

also the old calipers where never removed when bleeding the system.

G.

Finnpaso · Post by **Finnpaso** » Wed Jul 18, 2007 6:53 pm

U are right, but i mostly talked about bleeding system, not so much about other things...

ducapiero · Post by **ducapiero** » Thu Jul 19, 2007 8:54 am

Hey i have the same problem in this days,when i want to change old oil in the brake sistem...how do you build your special tool???

howewer i am going to change my brakes like gerard do and i put on a 999 semi radial pump

P.S.
guys in september a local television make a transmission on my bike
with a normal paso and mine(it's changed a lot by the last photo i have posted)then i put the video on youtube and sharing with all of you