Braided Brake Line and Reverse Flush

[Anonymous]

Decided to fit a braided front brake line to the KLX250. Got a custom made line from Carters Brake and Clutch at Melbourne St East Maitland. Top quality product and ADR legal.

Once fitted could not bleed brake from top master cylinder so had to do a reverse flush. This was accomplished by using a syringe and some clear fuel hose. Details here.

Got a syringe from the chemists (strange looks) and some clear fuel hose. Bit of large hose on bleed nipple and small hose inside larger hose and smaller hose on tit of syringe. All an air tight fit.

Filled the syringe and hose with fluid and fitted on to bleed nipple. Injected one full syringe. Then pulled the plunger out of the syringe and filled the syringe body with fluid. Repeated operation. Used three full syringe loads of fluid which over flowed the master cylinder.

Did one bleed from top and all done. Solid as a rock.

Would highly recommend this modification if your bike does not have braided brake lines. The difference is startling. Now have a solid front brake which was previously as spongy as hell.

old al.

[Jeffrey SmithMember]

Nice work Al, Thanks for the tips.

[Anonymous]

Good work Al – is that your birthday present for your bike?

Happy Birthday again Old Al

[PaulMember]

Good system Al.

My local chemist dont carry big syringes but Vets have them for work on large animals and they usually only want their cost price for one

Oh, Happy Birthday Al
klickety click

[Dwayne OMember]

Nice work there Al
I have often thought of that hose upgrade for the Super Commuter,,,
What was the cost of the hose from Carters if you don`t mind me asking?

I have used them in the past for Brake & Clutches on my vehicles, they are good with service indeed

Cheers Mate

[scott bockingMember]

Good topic Al

Just out of interest. When you refilled the syringe each time how did you stop air bubbles from plunging? I am about to do this job so would it be better to try and source an even bigger syringe?

Cheers

STM

[WayneMember]

old al wrote:

Quote:

http://www.obtrailriders.com/media/kunena/attachments/legacy/images/brake_bleed_006.jpg%5B/img%5D

Isn’t that steel brakeline exposed to the elements? (rocks/logs/branches etc.)
I wonder Kwaka didn’t run the hose straight too the caliper at manufacture?

Crash

ps. good job ol’ Al

[Anonymous]

WikdBeemer wrote:

Quote:

Good system Al.

My local chemist dont carry big syringes but Vets have them for work on large animals and they usually only want their cost price for one

Oh, Happy Birthday Al
klickety click

Muffberger recons you can get big ones from produce manufactuers. That might be the way to go.

old al.

[Anonymous]

EAGLE`02 wrote:

Quote:

Nice work there Al
I have often thought of that hose upgrade for the Super Commuter,,,
What was the cost of the hose from Carters if you don`t mind me asking?

I have used them in the past for Brake & Clutches on my vehicles, they are good with service indeed

Cheers Mate

$105. Sounds expensive but is a top job and the difference to the brakes is chalk and cheese.

old al

[Anonymous]

singletrackmind wrote:

Quote:

Good topic Al

Just out of interest. When you refilled the syringe each time how did you stop air bubbles from plunging? I am about to do this job so would it be better to try and source an even bigger syringe?

Cheers

STM

Simply tightened the bleed screw. Withdrew the syringe plunger and filled the body. The hose was still filled with fluid so no air bubbles. Then loosened the bleed screw, depressed the plunger pumping the fluid through the system then when syringe empty tightened the bleed screw. Easy. Did three times then one bleed from the top and finished.

You are right though, a big syringe would be the way to go.

old al

[Anonymous]

crash wrote:

Quote:

old al wrote:

Quote:

http://www.obtrailriders.com/media/kunena/attachments/legacy/images/brake_bleed_006.jpg%5B/img%5D

Isn’t that steel brakeline exposed to the elements? (rocks/logs/branches etc.)
I wonder Kwaka didn’t run the hose straight too the caliper at manufacture?

Crash

ps. good job ol’ Al

The line has a protecive coating over the braided steel. On the later models they do run the line direct to the caliper and that modification can be done to models like mine and Eagles.

The fork protector also protects the brake line. Hasn’t been fitted in the photo.

old al

[Anonymous]

Thanks for the birthday wishes too fellas.

old al

[GregMember]

I have been using syringe for years now, I have a big one that has the end cut so you just push it against the nipple thus not needing the hose. Two full syringes and done very very easy.

I have rescued / helped a few people with it I will add and they are amazed at how simple it is and how well it works

STM just get the air out by bleeding out to the atmosphere / ground before you crack the nipple

TB

[PaulMember]

old al wrote:

Quote:

singletrackmind wrote:

Quote:

Good topic Al

Just out of interest. When you refilled the syringe each time how did you stop air bubbles from plunging? I am about to do this job so would it be better to try and source an even bigger syringe?

Cheers

STM

Simply tightened the bleed screw. Withdrew the syringe plunger and filled the body. The hose was still filled with fluid so no air bubbles. Then loosened the bleed screw, depressed the plunger pumping the fluid through the system then when syringe empty tightened the bleed screw. Easy. Did three times then one bleed from the top and finished.

You are right though, a big syringe would be the way to go.

old al

Also with clear flexible hose you can tilt & tap the bubbles upwards to the plunger and you can see when to stop pumping fluid, so, you could do forward and reverse bleeds with it connected provided you have a big enough syringe.

Brake fluid absorbs moisture so the less contact it has with atmosphere the better.

[murph the surfMember]

Top job there Al
And happy Birthday for yesterday
Hope you spent it doing something you love doing mate
Cheers
Murph

[Author]

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