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1997 Trailboss - rear caliper brake issue

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Old 02-03-2014, 09:34 AM
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Default 1997 Trailboss - rear caliper brake issue

I had issues getting brake pressure. My rear caliper had the bleeder screw broken off, I pulled the caliper off, got it in a vice w/ easy out and snapped 2 off trying to back the screw out.

Not wanting to buy another caliper at the moment, I will in the future. I want to cap off the rear brake line at the brake distribution block under the front end. What size/type of plug would I need?
 
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Old 02-03-2014, 12:50 PM
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Just remove the rear line and match the fitting threads up at a good hardware store for a plug. Don't hold me to it but I think it's a 3/8" npt fitting.Dirt Cheap Yamaha, Honda, Arctic Cat & Polaris OEM Parts & Accessories – Cycle Parts Warehouse
http://www.ebay.com/itm/3-8-NPT-Pipe-Thread-Allen-Socket-Plug-Blue-PRE-63704-/330376456432?pt=Race_Car_Parts&hash=item4cebf8a8f0&vxp=mtr
 
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Old 02-03-2014, 03:29 PM
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Originally Posted by old polaris tech
Just remove the rear line and match the fitting threads up at a good hardware store for a plug. Don't hold me to it but I think it's a 3/8" npt fitting.Dirt Cheap Yamaha, Honda, Arctic Cat & Polaris OEM Parts & Accessories – Cycle Parts Warehouse
3 8" NPT Pipe Thread Allen Socket Plug Blue Pre 63704 | eBay

Thanks opt, ill pick one up from advance on the way home and try it.
 
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Old 02-03-2014, 04:07 PM
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You might get one the next size up also..
 
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Old 02-03-2014, 04:22 PM
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Originally Posted by old polaris tech
You might get one the next size up also..
so a 1/2 npt? 7/16?
 
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Old 02-03-2014, 05:14 PM
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7/16" also. Like I said don't hold me to the 3/8 npt..
 
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Old 02-04-2014, 08:11 AM
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Originally Posted by old polaris tech
7/16" also. Like I said don't hold me to the 3/8 npt..
I took the broken rear brake caliper to advance with me. He found a plug labeled 1/4 that fit inside the threads of the caliper. I took this home and tried it in the brake distribution block and it fit, was able to bleed front brakes fine.

I bled each side a few times, never saw much air or bubbles if any, yet i still have to pump the handle to get the atv to stop rolling. Is it still just air? This bike set up for 3 years until recently. How much is enough when bleeding these front two?

(Also put brand new pads on front 2)
 
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Old 02-04-2014, 10:27 AM
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When the brake lever is tight! If it's the least bit spongy there's still air in the lines. Plus if you have a hard time doing this on this 17 year old machine,could be the master cylinder seal leaking. Piston/seal kit is still available. http://www.cyclepartswarehouse.com/f...1997&fveh=5428
 
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Old 02-04-2014, 11:11 AM
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Originally Posted by old polaris tech
When the brake lever is tight! If it's the least bit spongy there's still air in the lines. Plus if you have a hard time doing this on this 17 year old machine,could be the master cylinder seal leaking. Piston/seal kit is still available. Dirt Cheap Yamaha, Honda, Arctic Cat & Polaris OEM Parts & Accessories – Cycle Parts Warehouse
If I can hear a little air coming out of the piston when i let go of the handle does it need to be replaced? How hard is it, isn't there a retainer ring thats hard to get out? Not sure if I have the tools needed.
 
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Old 02-04-2014, 11:28 AM
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Probably the seal sucking air. This one just pulls out after you remove the lever if I remember correctly. Doesn't show a circlip on the breakdown holding it in. I used the installer kit,BUT if you're careful you can install the kit with out damaging the new seal.https://polaris.service-solutions.co...7&cat=1&sub=27
 


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