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how do I change the front brake lines?

This is a discussion on how do I change the front brake lines? within the Yamaha YFM660R Raptor (2001-2005) forums, part of the Performance /Technical category; I bought the steel braided brake lines for the front of my raptor and I don't know if i need to drain all the fluid ...


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Old 06-06-2002, 10:33 AM   #1
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Default how do I change the front brake lines?

I bought the steel braided brake lines for the front of my raptor and I don't know if i need to drain all the fluid or just a little. anything yall can offer would be a big help.

thanks
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Old 06-06-2002, 10:39 AM   #2
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if i was puting on new brack lines i would change the fluid to a better one ! just me if you got it that far apart. did u get the main line that runs on the frame ?
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Old 06-06-2002, 11:22 AM   #3
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i got the three piece line kit with the distribution block, it goes from the brake lever to the block, then the block to both of the fron wheels.
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Old 06-06-2002, 01:06 PM   #4
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Bolt them up just like the stock ones were bolted up. Fill your brake resevoir up. Now loosen the zerk fitting (where you put the grease nozzle) on one of the brake calipers and have someone pump your brakes. When all of the air is out of the line and a steady flow of fluid starts shooting out, tigten it all the way while the person is still pumping. Repeat with other caliper.
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Old 06-06-2002, 09:57 PM   #5
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i thought you bled quad brakes like you bleed car brakes (am i wrong?)

sqeeze the lever to create pressure in the system, crack open the bleeder until the lever goes all the way to the bars,hold it there, close the bleeder, release the lever, repeat until you get no more bubbles


i had to do it to mine when it was brand new (squishy brakes, you gotta hate em) and it firmed up the brake lever nicely
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Old 06-07-2002, 12:28 AM   #6
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Default How I did mine,

Crack open the bleeders on the front brake calipars, open the cap on the handlebars for the fluid, pull the brake lever and get most of the fluid out. then remove the lines from the calipars, unbolt the block and take the lines off the A-arms. then I found removing the plastic over the radiator gave me more room to get the lines up and out. You have a small clamp holding the main line to the frame, use a screwdriver to knock it out of it's seat. install the lines in reverse order of removal, use the new washers that came with your brake line kit!!!
now with everthing hooked up, you can either gravity bleed the calipars or tighten up the bleeders and do them one at a time, just keeping the resivour full. I found you can actually bleed them yourself, squeezing the lever then opening the bleeder on each wheel, not both calipars at the same time. do one at a time till no bubbles (air) comes out. then go to the other wheel and repeat. have some brake clean handy to spray things off and clean up your mess.
You will love the difference in the more sur feel.

Good luck, use DOT4 fluid or better like the manufactuer recommends.

Good luck
Jim :)4 :)4 :)4
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Old 06-07-2002, 09:51 AM   #7
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thanks guys that is just what i needed :D
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