Brake line change, brake bleeding questions - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
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post #1 of 15 Old 12-21-2009, 08:31 PM Thread Starter
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Question Brake line change, brake bleeding questions

Hey all,

For the life of me I can't find any relevant threads on my particular question. Specifically, what is the proper/easy procedure for swapping out the Wee's brake lines?

I'm about due for a brake fluid change, so while at it, I want to upgrade my front brakes. The plan is to buy some SV1000 calipers, then get steel brake lines, caliper adapters and HH pads from Blair. I'm getting new lines and pads for the front and the back, with new calipers for the front. I figure if I'm going to be messing around with my brake fluid, I might as well do this upgrade.

I know that brake fluid is corrosive and can really screw up a paint job. So, I've been trying to figure out the step-by-step of getting the brake lines swapped out without introducing too much air in the system. I've heard that emptying out the master cylinder is a Bad Thing, as it's hard to get the air out of it afterwards. Is that true?

How do you remove the old brake line without getting brake fluid everywhere? Do you empty the master cylinder with a turkey baster first? Do you just let it drain out completely and then refill it and bleed the brakes?

Any detailed advice would be much appreciated, as this has been giving me a headache.

Thanks!

2008 DL650 a.k.a. Road Warrior, member #16 of the Flat Black Club
2009 Aprilia Tuono 1000R a.k.a. Silver Thunder
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post #2 of 15 Old 12-21-2009, 10:34 PM
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Thumbs up Brake line change, brake bleeding questions

Hi, the trick is to not let the job overwhelm you, You will want to bleed out all the fluid that you can before you swap the lines, it will be neater and easier in the long run.

Don't worry about air at this point, as the new lines will be all air until the fresh brake fluid is introduced into them,

When you are ready to go, or now if you like, email me a contact phone number and I will give you a quick call to help you out,

Enjoy the ride, and best regards,
Blair
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post #3 of 15 Old 12-21-2009, 11:48 PM Thread Starter
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So you're saying drain all fluid completely before removing any of the lines? Doesn't that introduce air into the master cylinder? I have heard (albeit in the VTX world) that doing so makes it difficult to get the air out of the master cylinder during the bleeding process. Is this not the case with V-Stroms?

In addition, to you guys bleed by applying pressure with the master cylinder, or do you bleed by attaching a vacuum pump to the little nipple at the caliper end?

2008 DL650 a.k.a. Road Warrior, member #16 of the Flat Black Club
2009 Aprilia Tuono 1000R a.k.a. Silver Thunder
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post #4 of 15 Old 12-21-2009, 11:57 PM
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Thumbs up Brake line change, brake bleeding questions

Do not worry about the master cylinder, it is a non-issue as you are changing the lines so for the purpose of this discussion all the fluid will run out anyway,

I prefer to use the vacuum, and mity vac is my tool of choice to create a vacuum to bleed the brake,

I am also going to pump the M/C via the brake lever, and hold it in while I get the air bleeding under way

I am not going to release the brake lever once I have pumped it until the bleeder nipples are closed, then I will re-pump until the pressure builds up as I go along and eventually no longer need the mity vac to create assist in the bleeding,

Whenever possible I always have a friend assist so that there are enough hands to get the job done as quickly as possible,

I also use, and recommend a Banjo Bleeder for the Front and Rear Brake Master Cylinder, so that I can do the very final air bleed and the brake bleeding maintenance from the master cylinders themselves to remove the tiny air bubbles that migrate up with gravity and can leave that spongy feeling in the brake levers or pedals. They look like this,





Once you have swapped out your lines, and installed your new pads it will all come together without too many issues,

Enjoy the ride, and best regards,
Blair

Last edited by SV Racing Parts; 12-22-2009 at 12:20 AM.
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post #5 of 15 Old 12-22-2009, 02:05 AM
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I use a Mity Vac when I do brakes. Suck out all the fluid in the MC reservoir first, then crack the caliper bleeders and suck out all remaining fluid in the lines. When you remove the lines, hold a rag over the fittings to prevent any drips.

When installing, the easy way to bleed is with the bleeder at the MC, do it first then one line at a time. Shouldn't take any more then an hour from start to finish.

63 BMW R69S sidecar project, 69 BMW R60US, 00 SV650, 02 SV650S, 05 Wee, 02 Vee "R", 07 Tuono, 05 ZX10R track bike, 13 BMW S1000RR track bike

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post #6 of 15 Old 12-22-2009, 12:46 PM Thread Starter
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Where do you guys get the bleeder for the M/C? Unless I'm blind, it's not part of the stock setup.

2008 DL650 a.k.a. Road Warrior, member #16 of the Flat Black Club
2009 Aprilia Tuono 1000R a.k.a. Silver Thunder
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post #7 of 15 Old 12-22-2009, 01:42 PM
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Thumbs up Brake line change, brake bleeding questions

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Originally Posted by Mr.Metal View Post
Where do you guys get the bleeder for the M/C? Unless I'm blind, it's not part of the stock setup.


I have them, the SS Banjo Bleeders are $19.95 each. Let me know if you would like them,

You can email me directly at [email protected]

I will get you looked after right away,

Enjoy the ride, and best regards,
Blair
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post #8 of 15 Old 12-22-2009, 08:23 PM Thread Starter
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Well, I'd be ready to pull the trigger on all of the parts from you Blair, but I have yet to locate a set of 4-pot Tokico calipers. I called the dealer and he wants $215 for each, which is ridiculous. My local used bike part / salvage shop doesn't have them, and eBay shows no results. So, unless someone has a lead on some used calipers, I'll have to join and ask in the SV forums. Once I have the calipers, I can place the order with you :mrgreen:

2008 DL650 a.k.a. Road Warrior, member #16 of the Flat Black Club
2009 Aprilia Tuono 1000R a.k.a. Silver Thunder
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post #9 of 15 Old 12-22-2009, 08:34 PM
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Quote:
Originally Posted by Mr.Metal View Post
Well, I'd be ready to pull the trigger on all of the parts from you Blair, but I have yet to locate a set of 4-pot Tokico calipers. I called the dealer and he wants $215 for each, which is ridiculous. My local used bike part / salvage shop doesn't have them, and eBay shows no results. So, unless someone has a lead on some used calipers, I'll have to join and ask in the SV forums. Once I have the calipers, I can place the order with you :mrgreen:

Hi, I think your dealer meant $215 a pair, I have access to them new all day long at $200 per set new OEM from Suzuki,

I really can't tell you how much faster and easier it would be to help you locate a set of calipers if you were to email me directly at [email protected] so I could just link you to where and when I see them. I posted up links to two sets on ebay, here on Stromtrooper, both in the $50 - $75 or so price range this past week,

Search ebay daily under GSXR 600 Front Calipers, and separately under GSXR 750 Front Calipers, and SV1000 Front Calipers,

Let me know whenever you are ready, and I will do what I can for you,

Enjoy the ride, and best regards,
Blair
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post #10 of 15 Old 12-22-2009, 08:52 PM
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There are a bunch of sets on Ebay for $50 or less right now

63 BMW R69S sidecar project, 69 BMW R60US, 00 SV650, 02 SV650S, 05 Wee, 02 Vee "R", 07 Tuono, 05 ZX10R track bike, 13 BMW S1000RR track bike

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