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Thread: Recurring Clutch and Rear Brake Issues

  1. #31
    apriliaforum Member
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    Rizoma should work...

  2. #32
    apriliaforum expert 2pist's Avatar
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    KZ, I followed your procedures to a "T" on my rear brake and it is rock hard. My only concern now is the pedal travel is only 1/2"! I bought a big syringe but only used it as a suction device as I couldn't figure out how to not end up pumping the bubble into the system that must occur at the bleeder valve using the injection method.

    01 RSV, Micron TI w/TI chip
    06 Triumph Sprint ST
    01 YZ 250

  3. #33
    apriliaforum expert kzmille's Avatar
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    Quote Originally Posted by 2pist
    ...My only concern now is the pedal travel is only 1/2"!...
    Just be sure there is free-play between the actuation rod and the MC piston. Normally you want 1-2 mm but a little more is OK.

  4. #34
    apriliaforum prov-nov
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    Thanks for the great post. Its nice to finaly have a rear brake after 2300 miles. I used a mityvac and ATE Blue race fluid now it is sold as a rock. I drove the bike very hard using the rear brake for about 30 miles and still spot on.

  5. #35
    apriliaforum Member
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    I have a good hard pedal now, but still no stopping power. I can't lock up the rear wheel by itself. I even cleaned up the rotors and pads.

  6. #36
    apriliaforum expert kzmille's Avatar
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    I don't know what type of bike you were used to before you got your aprilia but you have to keep in mind that the rear brake system was designed for a race bike. The diameter of the disc is among the smallest put on a production motorcycle. The front brake provides most of the stopping power.

  7. #37
    apriliaforum expert Sal Khan's Avatar
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    Ya know... My rear brake has worked perfectly since 2001, which was the last time I bled it.

    I don't think I'm ever going to bleed it again. EvAr.
    Sal Khan

    http://www.thelunchjournals.com - Updated 4/6/08

  8. #38
    apriliaforum newb Aprilla Gorilla's Avatar
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    My hero!

    KZMILLE, I just gotta say thanks. I fought with my clutch off and on for about a week and couldn't bleed it properly. One trip to the medical supply store for the syringe and tubing, and about $8 bucks later--voila! Better than it was before.
    That's-a-spi-cee-mon-kee

    Present: '01 Futura--she's a keeper
    Past:'04 R1150 GS ADV, '98 HD FLSTC w/sidecar, '99 HD Sporty,'93 HD FLSTC, '89 HD Sporty, '84 HD FLH, '50 HD Panhead

  9. #39
    apriliaforum Member ncmech's Avatar
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    Another trick I learned on another forum that may work is to tie wrap/bungee the clutch and brake levers to the grips overnight after bleeding them. The next morning the action should be quite firm. Not sure how that works, but guessing it allowed any air pockets to migrate upwards to the reservoirs.

  10. #40
    apriliaforum expert Ignite Aprilia's Avatar
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    God, thanks so much for this thread!

    Needs to make a sticky or something.

    I have been going crazy all day as I have a problem with my rear brake on my 01. Checked pads/pistons and the fluids, but it looks like I have not been beeding it properly to get all the air out.

    Why make it with the bleed nipple at the bottom?

  11. #41
    apriliaforum expert kzmille's Avatar
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    Quote Originally Posted by Ignite Aprilia
    ...Why make it with the bleed nipple at the bottom?
    It just comes down to economics. If aprilia wanted them to, Brembo would design and supply a special caliper that had a layout that would facilitate bleeding in the position which it is mounted on the bike. This is how it is done with virtually every car on the planet. It's just easier and cheaper for them to grab the cheapest off the shelf Brembo unit that has the piston size they need and go with that, knowing that a competent technician understands what is required.

  12. #42
    apriliaforum expert Ignite Aprilia's Avatar
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    Wow it worked!

    It really is just a case of getting the caliper into the right angle when your bleeding it.

    Thanks again.

  13. #43
    apriliaforum Junkie aprilakias's Avatar
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    KZ Rs 125 rear caliper has bleeder side by side to supplying screw.Far different to how mille's brembo are placed.Which are the two ''secret'' positions to put caliper while bleeding you suggest?Have tried about 5 times to bleed my rear brake but in vain!Have no brake feeling at all!

  14. #44
    apriliaforum expert kzmille's Avatar
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    Sorry, I have not seen the 125 caliper so I cannot advise.

  15. #45
    apriliaforum expert QuickHX's Avatar
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    So, being a scavenger and a (cheap) clever sot...

    I wonder why no one has entertained parts swapping in this thread.
    In the past, my hobby was swapping bits- like, with my '71 Datsun 510 project (RIP) I bolted in the L18SSS engine, a 5-speed close ratio trans from another Datsun, a rear LSD (Limited Slip Differential) from a Subaru 4WD, springs from a Dodge Colt (matched the 'rally' springs from the dealer)... etc.

    So: If someone else has resouces, I'll entertain we take a look around for a bolt-in solution.

    Here's one idea just to get the ball rolling: Guzzi caliper . Who knows if it fits... there's gotta be SOMEthing out there!

    Using 'our' part number, this would be interesting to investigate...
    Brembo Cross Reference chart.

    Then find a decent MC wrecking bone yard and start digging thru the bits. Or order one new... see the 'cheap' part in the title...

    Thoughts?

    Tom "When do I get rid of the newb status?" in Woodinville
    --------------
    Throttle body settings: "It's more a philosophy than pure numbers." -Gabro

    Just call me 'Casino'; Liquor in the front, poker in the rear.
    Aw, heck - You mean what I know...

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