rear brakes


Information and questions on GL1500 Goldwings (1988-2000)
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Dogsled
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Motorcycle: 1997 Goldwing

rear brakes

Postby Dogsled » Thu Oct 08, 2015 4:28 pm



I have to remove my rear brake caliper and re-build it. No problem doing that, but are there any posts on how to bleed the linked system? I can't find anything. Can you crimp off the line and after rebuilding it leave the bleeder open and let gravity fill the caliper. I just don't know if pumping the pedal while opening and closing the bleeder is proper with this set-up. I don't want to get air in the front brake cause i'm not sure how this link thing works.


"Fight until hell freezes over, then fight on the ice"

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chrisz
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Motorcycle: Honda GL1100 year 1983
Triumph Tiger 1050 year 2008

Re: rear brakes

Postby chrisz » Thu Oct 08, 2015 5:58 pm

My '83 has linked brakes. I bled them normally, did the rear first then the front after replacing the rubber brake lines. Nothing to difficult with this linked setup. I have a Mightyvac which helps if you are bleeding the brakes yourself.

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Bluewaterhooker0
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Motorcycle: 1997 Goldwing GL 1500 SE

Re: rear brakes

Postby Bluewaterhooker0 » Thu Oct 08, 2015 10:26 pm

Can't answer most of your questions, but I'm pretty sure crimping the brake line is a bad idea. That's a pressurized hose, obviously, and I believe crimping it will compromise the wall integrity. That's all I've got.

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H20loo
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Re: rear brakes

Postby H20loo » Fri Oct 09, 2015 6:12 am

You could bleed the front also and have fresh fluid in the whole system

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dingdong
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Re: rear brakes

Postby dingdong » Fri Oct 09, 2015 7:38 am

Proper method for bleeding the linked brakes is: Bleed the front first then bleed the rear and you have to do both. Bleeding procedure is identical to any other brake system. A mighty Vac helps tremendously but not a must.
Tom

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WingAdmin
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Re: rear brakes

Postby WingAdmin » Fri Oct 09, 2015 10:13 am

Correct. If you have removed the rear caliper, you will need to bleed the whole system, and the correct way is to bleed the left front, then the rear. Doing so will remove all air from the system.

Dogsled
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Re: rear brakes

Postby Dogsled » Fri Oct 09, 2015 12:06 pm

I thought there was a sequence for the linked system. BUT, seeing as the rear caliper and some line are totally empty of fluid. Is it better to get the rear line filled and bled out as well as possible. Then do the complete front and rear that is recommended.

How does the link work. Can air back up from the rear to the front? If it's not possible for air to back thru to the front, what is the purpose or need to bleed the front. My assumption is there is some sort of fluid equilizer as the link.

Is there a way to pre-prime the rebuilt caliper?
"Fight until hell freezes over, then fight on the ice"

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WingAdmin
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Re: rear brakes

Postby WingAdmin » Fri Oct 09, 2015 6:30 pm

Dogsled wrote:I thought there was a sequence for the linked system. BUT, seeing as the rear caliper and some line are totally empty of fluid. Is it better to get the rear line filled and bled out as well as possible. Then do the complete front and rear that is recommended.

How does the link work. Can air back up from the rear to the front? If it's not possible for air to back thru to the front, what is the purpose or need to bleed the front. My assumption is there is some sort of fluid equilizer as the link.

Is there a way to pre-prime the rebuilt caliper?


I've never had to do anything that complex. I hook everything up, pour brake fluid into the reservoir, then hook up the Mity-Vac to the front left caliper. Pump until you get fluid without bubbles. Then hook it to the back and do the same. Keep topping up the reservoir as you pump to avoid running it dry and pumping more air into it.

After a day letting it sit to let any bubbles in the fluid (from pouring, etc) migrate upward, I re-bleed front and rear again.




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