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issues with front brake bleeding
Posted: Thu Jul 31, 2008 7:59 pm
by clutz003
I put on a new Galfer front brake line yesterday. I primed the line
with brake fluid before tightening the bottom banjo bolt then filled
up the master cylinder with fluid and began the bleeding process. I
can't get any resistance on the brake lever. There appears to be
fluid throughout the system, as when I take out the bleeder valve
fluid runs out of the hole. When I open the valve and depress the
lever only a very small amount of fluid comes out. There is not
nearly enough pressure to even think about using the speed bleeder. I
let it set overnight with the lever fully compressed (recommended per
review of the archives) but still the same story today.
Any suggestions?
Thanks,
Craig
A18
San Jose CA
issues with front brake bleeding
Posted: Thu Jul 31, 2008 8:08 pm
by JAMES BUCK
Craig -
One suggestion I have is to leave it overnight with the lever
"bungeed" again, but make sure the bike is upright. Don't leave it
on its sidestand. Leave it either on its centerstand (if you have
one) or on a jack (if you have one). It's been a while since I
changed my lines, but it seems like that really helped.
James
A15
Dallas, TX
On Jul 31, 2008, at 7:59 PM, clutz003 wrote:
> I put on a new Galfer front brake line yesterday. I primed the line
> with brake fluid before tightening the bottom banjo bolt then filled
> up the master cylinder with fluid and began the bleeding process. I
> can't get any resistance on the brake lever. There appears to be
> fluid throughout the system, as when I take out the bleeder valve
> fluid runs out of the hole. When I open the valve and depress the
> lever only a very small amount of fluid comes out. There is not
> nearly enough pressure to even think about using the speed bleeder. I
> let it set overnight with the lever fully compressed (recommended per
> review of the archives) but still the same story today.
>
> Any suggestions?
>
> Thanks,
>
> Craig
> A18
> San Jose CA
>
>
>
[Non-text portions of this message have been removed]
issues with front brake bleeding
Posted: Thu Jul 31, 2008 8:34 pm
by E.L. Green
--- In
DSN_KLR650@yahoogroups.com, James Buck wrote:
> One suggestion I have is to leave it overnight with the lever
> "bungeed" again, but make sure the bike is upright.
>
> On Jul 31, 2008, at 7:59 PM, clutz003 wrote:
> > up the master cylinder with fluid and began the bleeding process. I
> > can't get any resistance on the brake lever.
I had to just keep pumping and pumping and pumping until eventually
enough fluid made it into the master cylinder so that I could get a
good flow going. You might try leaning the bike different when you
start pumping to try to let the bubble that's in the master cylinder
escape. It took several minutes of pumping, tapping, and wiggling the
handlebars (to change the angle of the brake reservoir and master
cylinder) to get it to start going, but eventually it did. One problem
is that the master cylinder on the KLR opens to the *front* of the
reservoir, rather than the *bottom* of the reservoir, so a bubble
forms there. So maybe loosening the brake lever and rotating it so
that the reservoir is pointing different might help too if all else
fails...
issues with front brake bleeding
Posted: Thu Jul 31, 2008 8:46 pm
by Jeff Saline
On Fri, 01 Aug 2008 00:59:09 -0000 "clutz003"
writes:
> I put on a new Galfer front brake line yesterday. I primed the line
>
> with brake fluid before tightening the bottom banjo bolt then filled
>
> up the master cylinder with fluid and began the bleeding process. I
>
> can't get any resistance on the brake lever. There appears to be
> fluid throughout the system, as when I take out the bleeder valve
> fluid runs out of the hole. When I open the valve and depress the
> lever only a very small amount of fluid comes out. There is not
> nearly enough pressure to even think about using the speed bleeder.
> I
> let it set overnight with the lever fully compressed (recommended
> per
> review of the archives) but still the same story today.
>
> Any suggestions?
>
> Thanks,
>
> Craig
> A18
> San Jose CA
<><><><><><><><>
<><><><><><><><>
Craig,
Maybe try opening the bleeder just a tad so it lets fluid out. Then put
a thumb or finger over the opening to provide light resistance to fluid
coming out. It will also seal the opening preventing air returning to
the system through the bleeder. Then repeatedly apply the brake by
squeezing and releasing the lever. Don't let the fluid get too low where
the master cylinder sucks air. This has worked for me on a few brake
systems that were full of air.
For whatever it may be worth... I never use speed bleeders although I
have heard good things from a few people who have used them with success.
Good lucky and best,
Jeff Saline
ABC # 4412 South Dakota Airmarshal
Airheads Beemer Club
www.airheads.org
The Beautiful Black Hills of South Dakota
75 R90/6, 03 KLR650, 79 R100RT
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issues with front brake bleeding
Posted: Fri Aug 01, 2008 5:16 am
by Greg May
Hi Craig, I had the same problem when I installed a Rusell line, I believe it was due to the fact in my case that the line was a touch longer, not confirmed, causing the highest point in the line was abit higher then the master cylinder trapping air there. I bought on of the little $10 bleed assisting kits and had it done in minutes after trying my normal way for about 30 minutes, this was the first time I had trouble bleeding brakes. I tried the Speed Bleeders, they wouldn't work for me, think I had a defective on....have a great day ....Greg
--- On Thu, 7/31/08, clutz003 wrote:
From: clutz003
Subject: [DSN_KLR650] Issues with front brake bleeding
To:
DSN_klr650@yahoogroups.com
Received: Thursday, July 31, 2008, 9:59 PM
I put on a new Galfer front brake line yesterday. I primed the line
with brake fluid before tightening the bottom banjo bolt then filled
up the master cylinder with fluid and began the bleeding process. I
can't get any resistance on the brake lever. There appears to be
fluid throughout the system, as when I take out the bleeder valve
fluid runs out of the hole. When I open the valve and depress the
lever only a very small amount of fluid comes out. There is not
nearly enough pressure to even think about using the speed bleeder. I
let it set overnight with the lever fully compressed (recommended per
review of the archives) but still the same story today.
Any suggestions?
Thanks,
Craig
A18
San Jose CA
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[Non-text portions of this message have been removed]
issues with front brake bleeding
Posted: Fri Aug 01, 2008 1:24 pm
by Michael Martin
Craig,
It may be that your master cylinder bore has air in it. Here's how to remedy that:
Fill the reservoir with fresh brake fluid.Actuate
the brake lever while watching the fluid in the reservoir. One or more
small bubbles may float to the surface. If so, you need to repeat this
action until the bubbles stop appearing. Note, it may take many dozens
of applications. The applications don't have to be full stroke. A
partial stroke is all that's required.When the bubbles cease to appear, the master cylinder is bled.
HTH,
Mike Martin,
Louisville, KY
--- On Thu, 7/31/08, clutz003 wrote:
From: clutz003
Subject: [DSN_KLR650] Issues with front brake bleeding
To:
DSN_klr650@yahoogroups.com
Date: Thursday, July 31, 2008, 8:59 PM
I put on a new Galfer front brake line yesterday. I primed the line
with brake fluid before tightening the bottom banjo bolt then filled
up the master cylinder with fluid and began the bleeding process. I
can't get any resistance on the brake lever. There appears to be
fluid throughout the system, as when I take out the bleeder valve
fluid runs out of the hole. When I open the valve and depress the
lever only a very small amount of fluid comes out. There is not
nearly enough pressure to even think about using the speed bleeder. I
let it set overnight with the lever fully compressed (recommended per
review of the archives) but still the same story today.
Any suggestions?
Thanks,
Craig
A18
San Jose CA
[Non-text portions of this message have been removed]
issues with front brake bleeding
Posted: Fri Aug 01, 2008 2:33 pm
by fasteddiecopeman
Craig,
I use a "MityVac" vacuum bleeder, and don't have any problems. Think I bought it at Harbor
Freight.
Ed
issues with front brake bleeding
Posted: Sat Aug 02, 2008 8:32 am
by rustygreasy
--- In
DSN_KLR650@yahoogroups.com, "fasteddiecopeman"
wrote:
>
> Craig,
> I use a "MityVac" vacuum bleeder, and don't have any problems. Think
I bought it at Harbor
> Freight.
> Ed
>
+1 That is the fastest way to bleed a small hydraulic system that
there is. We use it for brake systems, clutch systems, and power
steering systems in automotive applications. It also lets you know if
you have a system leak because it will not achieve and hold a vacuum
if there is a leak. We use a large lab style rubber stopper (cork)
with a tube inserted into the center of it to attach the MityVac hose
to, wet the surface of the stopper with the fluid that the system uses
in order to seal it to the reservoir and apply a vacuum.
Also if for some reason the master cylinder piston has not fully
returned to the rest position it can cover the supply port from the
reservoir and not allow fluid to transfer from the reservoir to the
rest of the system.
Steve
DuraThump A16
issues with front brake bleeding
Posted: Sun Aug 03, 2008 12:33 pm
by Bogdan Swider
On 8/1/08 1:33 PM, "fasteddiecopeman" wrote:
>
>
>
> Craig,
> I use a "MityVac" vacuum bleeder, and don't have any problems. Think I bought
> it at Harbor
> Freight.
> Ed
>
You can also buy a large syringe usually sold for use with animals to fill
bottom up, at the caliper. Got mine at a ranch supply store.
Bogdan, who hates playing in brake fluid
[Non-text portions of this message have been removed]
issues with front brake bleeding
Posted: Sun Aug 03, 2008 2:23 pm
by Ed Chait
----- Original Message -----
From: "Bogdan Swider"
To: "fasteddiecopeman" ;
DSN_KLR650@yahoogroups.com>
Sent: Sunday, August 03, 2008 10:32 AM
Subject: Re: [DSN_KLR650] Re: Issues with front brake bleeding
> You can also buy a large syringe usually sold for use with animals to
> fill
> bottom up, at the caliper. Got mine at a ranch supply store.
>
> Bogdan, who hates playing in brake fluid
>
If you do it that way, how do you catch the fluid at the reservoir?
Or do you suck some out at the reservoir first and then shoot some up from
the caliper?
ed
A17