disc brake a bit spongy - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 6 (permalink) Old 08-22-2010, 11:47 PM Thread Starter
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disc brake a bit spongy

To come to a full stop, usually all I need to do is press my disc brake lever about 1". Recently, I've needed to pull back 2" or more to accomplish the same stop.

The brake fluid, I think, is fresh and full.

What is the obvious explanation and solution? Thx.


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post #2 of 6 (permalink) Old 08-23-2010, 09:26 AM
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Have you checked the brake pads? If they are very thin you should replace them also you can bleed the system on each brake caliper. This should help but if not it might need a master cylinder rebuild. The spring in there gets weak and needs replacement. Try the quick fixes before anything.

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post #3 of 6 (permalink) Old 08-24-2010, 12:18 AM
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If Baldy`s suggestions all check out ok, the maintenance schedule recommends changing the brake hoses every 4 years, and I see your bike is just there, at a 2006 model.

Hoses maybe starting to stretch??

Someone here installed some aftermarket hoses with a chrome braided cover a short while ago. I don`t know if that makes them any stronger, or if it is just bling.

Anyone know if stronger hydralic brake hoses are available for the vn750?


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post #4 of 6 (permalink) Old 08-24-2010, 10:16 AM
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Charlie, did you have any work done on the bike lately? Like have it at that shop for a "check up" or anything? Just wondering if they changed the brake fluid but - per the other two posts - didn't bleed the brakes enough.

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post #5 of 6 (permalink) Old 08-24-2010, 11:20 AM
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Originally Posted by OlHossCanada View Post

Anyone know if stronger hydralic brake hoses are available for the vn750?
If you go to aeroquip or any other industrial line company they you build yours on the spot for half the price. I have not purchased name brand hoses in years. Same goes for bearing, go to and industrial distributer like dana or timken and the will cross reference your bearing you bring and sell you a better quality piece cheaper the over the parts store cheapest one

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post #6 of 6 (permalink) Old 08-24-2010, 05:48 PM
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After checking the pads and making sure all the fittings are tight. before you try bleeding the brakes, try the "over nite tie" trick.

Tie the brake lever back toward the grip so it is as tight as you could pull it with all the strength in your hand and let is sit overnight tied back like that.

The next day , untie the lever and see if don't feel better.


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