1986 1200 Rear breaks


Information and questions on GL1200 Goldwings (1984-1987)
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viperdad
Posts: 19
Joined: Sat Apr 17, 2010 2:49 pm
Location: Ashville, Ohio
Motorcycle: 1986 SEI Goldwing

1986 1200 Rear breaks

Postby viperdad » Sun May 09, 2010 12:31 pm



I have a 86 1200 wing that is having rear break problems....I thought it was the master so got it another one and the same thing, No rear breaks, no rear peddle, no pressure to the rear pistions, seams like the pressure is going to the front breaks. So with no pressure the rear calaper isnt pushing in. Dont know anything about breaks so any help would be great. It is a SEI dont know if that makes any differnece.


Thanks



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WingAdmin
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Re: 1986 1200 Rear breaks

Postby WingAdmin » Sun May 09, 2010 3:32 pm

If you're getting pressure to the front and not to the back, that means there isn't a leak...and it also means something is stopping the rear from working correctly. There could be a couple of things:

- Rear caliper pistons are seized
- Rear caliper sliding pins are seized
- Rear caliper brake pad pins are seized

I can't think of anything else that would cause this behavior (other than a kinked rear hose, but that would still allow SOMETHING through), so I'd recommend pulling the rear caliper off and having a close look at it.

viperdad
Posts: 19
Joined: Sat Apr 17, 2010 2:49 pm
Location: Ashville, Ohio
Motorcycle: 1986 SEI Goldwing

Re: 1986 1200 Rear breaks

Postby viperdad » Sun May 09, 2010 3:44 pm

Thanks. I have the cal. off and the breaks out but wouldnt I have the a break peddle. The pistons are tight but did manage to push them back in....do you think the cal. needs rebuilt

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WingAdmin
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Posts: 17050
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: 1986 1200 Rear breaks

Postby WingAdmin » Sun May 09, 2010 4:09 pm

You can't tell for sure without removing the pistons - and if you remove the pistons, you have to rebuild it anyway. :)

viperdad
Posts: 19
Joined: Sat Apr 17, 2010 2:49 pm
Location: Ashville, Ohio
Motorcycle: 1986 SEI Goldwing

Re: 1986 1200 Rear breaks

Postby viperdad » Sun May 09, 2010 4:44 pm

I bled the cal. so I am getting fluid back to it. I removed the cal. and the pads tried to the push the pistons back they are tight but went back....What is all involed in rebuilding the cal........I have no rear peddle mushes down. if the pistons were stuck wouldnt I have some peddle?

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WingAdmin
Site Admin
Posts: 17050
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: 1986 1200 Rear breaks

Postby WingAdmin » Mon May 10, 2010 6:52 am

If one piston is seized and the other isn't, it can hang up on the slider, and instead of applying brakes equally across the pads, it instead bends, using the sliders as springs - giving you a soft pedal. When you release the pedal, it bends back, pushing the piston back in. I've had this happen when one slider pin was seized as well - the whole caliper just rotates sideways as the one pin slides and the other doesn't when the brake is pressed - then when it's released, it rotates back to release the pressure.




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