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  #1  
Old 06-26-2019, 06:42 PM
DeanR DeanR is offline
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SG left front caliper bleed problem

I can't get this stupid right caliper to bleed. Latest try is a reverse bleed attempt, sending fluid through the bleeder and up to the M/C, taking air with it. Problem is that it doesn't seem to be moving past the 'Y'.
It just stops accepting more brake fluid.
Other side no problem, fluid flows right on up to the M/C. Which might imply that the problem is not in the single line from the 'Y' to the M/C.
Both lower lines have been removed, are clear, and reconnected.
I don't know what or where it is being blocked.
Any insights?
(It's taken a while ! to get back to this problem)
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  #2  
Old 06-27-2019, 06:26 PM
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bikerphil bikerphil is offline
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Maybe the caliper piston is completely pushed in closing the chamber from passing the fluid from the bleeder to the line and up to the M/C. Try bleeding the conventional way and see what happens.
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  #3  
Old 06-28-2019, 05:17 AM
DAVINCI DAVINCI is offline
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i've always had success hanging the caliper above the level of the M/C, then conventional bleed. Gets all the air all the time. other methods, tried em all, are hit and miss
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  #4  
Old 06-28-2019, 06:20 AM
DeanR DeanR is offline
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Same thing happens with conventional bleed Phil, which led me to reverse bleed.

Pistons are where they should be, seals are in clean grooves, everything cleaned and should be good to go.

I'll try your hanging method Randy, which sounds more or less like a reverse bleed.

Sure seems like a blockage. But no clue how this might be happening. Fluid gets only so far (to the'Y') and stops. But only on the right side. Pretty weird. Left side fluid easily makes it the whole way, conventionally or reverse.
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Old 06-28-2019, 01:10 PM
motoman motoman is offline
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Is this issue pertaining to your XS11 or your STeed Dean? If the XS11, interesting situation...….if the ST, right front line is held in place with a retainer clamp on triple clamp and can get pinched, restricting fluid flow to right caliper, BTDT.
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Last edited by motoman; 06-28-2019 at 01:19 PM.
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Old 06-28-2019, 05:38 PM
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bikerphil bikerphil is offline
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+1 on a line being restricted. Process of elimination now.
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79SF - every day rider, solo seat mod, Brembo 16MM M/C, Accel 3Ω's, Supertrapp (120K miles)

"If it ain't broke, modify it"

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  #7  
Old 06-28-2019, 05:53 PM
DeanR DeanR is offline
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Where might this restriction be happening? Fluid gets from both calipers up to the Y junction. Which implies both L and R lines are ok.
And it gets all the way to the M/C from the left caliper, which seems to imply that things are fine from the Y to the M/C.
I must be missing something!
Frustrating !!!
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Old 06-28-2019, 06:03 PM
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bikerphil bikerphil is offline
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Well then, the restriction must be in the splitter.
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79F - owned since '89 - FJ fork mod, solo seat mod, Dyna 3Ω's, 14MM M/C (160K miles)
79SF - every day rider, solo seat mod, Brembo 16MM M/C, Accel 3Ω's, Supertrapp (120K miles)

"If it ain't broke, modify it"

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  #9  
Old 06-28-2019, 06:09 PM
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skids skids is offline
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Sooo, you are sure there isnít a clogged bleeder valve?
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  #10  
Old 06-28-2019, 06:21 PM
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bikerphil bikerphil is offline
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Another thought, make sure the side holes in the banjo bolts line up with the center of the lines.
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79F - owned since '89 - FJ fork mod, solo seat mod, Dyna 3Ω's, 14MM M/C (160K miles)
79SF - every day rider, solo seat mod, Brembo 16MM M/C, Accel 3Ω's, Supertrapp (120K miles)

"If it ain't broke, modify it"

30 year XS11 owner

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  #11  
Old 06-29-2019, 10:08 AM
DeanR DeanR is offline
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Quote:
Originally Posted by bikerphil View Post
Well then, the restriction must be in the splitter.
I grabbed another splitter out of the parts box, looking darn near new. So I'll likely pull everything off except the m/c and reassemble.
Before doing that though, I'm not sure what you mean by this Phil:
Quote:
Originally Posted by bikerphil View Post
Another thought, make sure the side holes in the banjo bolts line up with the center of the lines.
Sounds like something to check.

Also, is there a source for the washers? In my box of copper washers, they are either very slightly too wide to fit in the caliper recesses, or the ones that fit nicely there have a smaller hole.
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  #12  
Old 06-29-2019, 01:01 PM
DeanR DeanR is offline
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Looks like the problem might be the way I have the lines oriented in the splitter.
Anyone have a picture of the correct hook-up?
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  #13  
Old 06-29-2019, 01:59 PM
Ranger_xs1100 Ranger_xs1100 is offline
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I couldn't get a picture because it is behind the fork cover, but Maybe this will help:

https://www.partzilla.com/catalog/ya...aster-cylinder
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  #14  
Old 06-29-2019, 02:04 PM
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bikerphil bikerphil is offline
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What I was referring to was the holes may be blocked if different banjo bolt, washers, and lines were used. Different thicknesses of the banjo fittings may actually block those fluid holes. The fluid holes in the bolt should be in the center of the banjo fitting and not obstructed by a washer.
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79F - owned since '89 - FJ fork mod, solo seat mod, Dyna 3Ω's, 14MM M/C (160K miles)
79SF - every day rider, solo seat mod, Brembo 16MM M/C, Accel 3Ω's, Supertrapp (120K miles)

"If it ain't broke, modify it"

30 year XS11 owner

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  #15  
Old 06-29-2019, 03:28 PM
Ranger_xs1100 Ranger_xs1100 is offline
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pictures

Here ya go Dean...

This would be the view if you were standing in front of the bike...also notice that the lower banjo bolt has 2 holes, ONE may be clogged, causing the problem you described.

And it uses 3 washers, one between the 2 lines and one on top and one on the bottom of the 2 lines.



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