Rear Brake Dragging


Information and questions on GL1200 Goldwings (1984-1987)
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BikerNewsman
Posts: 77
Joined: Sat Jan 21, 2012 11:22 pm
Location: Hondo, TX
Motorcycle: 1985 GL1200 Limited - Anniversary Edition

Previously owned:
1969 HD Sporty
1974 Yamaha 650

Rear Brake Dragging

Postby BikerNewsman » Sat Jun 09, 2012 9:06 am



The rear brake caliper is dragging, applying enough pressure to the rotor to drag lightly but not stop the wheel. Applying the brake firmly stops the wheel, then when it releases it's back to it's current "normal" position. As you can tell from the attached picture there's plenty of meat on the pads, but they are also well encrusted from sitting for at least 2 years so they will be replaced before putting the bike on the street. My question is this... should the caliper free up when the new pads are installed or should I just plan on purchasing a new caliper (or are these rebuildable) when I get the new pads?

The bike is as 1985 GL1200 LTD with under 57,000 miles.
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"It ain't about the miles, it's all about the smiles".
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Phunnybone
Posts: 176
Joined: Mon May 28, 2012 3:48 am
Location: Rock Hill SC
Motorcycle: 1985 GL1200 LTD
1985 GL1200 LTD (#2)
1983 GL650i Silverwing (Sold to someone who'll make it roadworthy again)
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Re: Rear Brake Dragging

Postby Phunnybone » Sat Jun 09, 2012 12:11 pm

Just bought my 85 1200 ltd - it had been stored in a garage for 3 years. The pistons on the rear caliper were corroded enough to make it bind too. Get a rear caliper rebuild kit from www.partsnmore.com then look into the how-to section of the forum as to what you have to remove to get to the caliper. Not too hard if you're mechanically inclined.

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zamboni920
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Location: Stavanger, Norway
Motorcycle: 1996 GL1500 SE with Hannigan 2+2 sidecar

Re: Rear Brake Dragging

Postby zamboni920 » Sun Jun 10, 2012 8:36 pm

I had same problem when I bought my '84 GL1200I , a few years ago. I removed the caliper, got the pistons out. Cleaned and polished both piston and bore. Flushed and cleaned brake line and master cylinder. No kit, just cleaning. I thought I would have to do it again this year, but it is perfect still! Most likely it is corroded and with lots of gunk in the system. Brake fluid absorbs moisture and deteriorates over time.

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BikerNewsman
Posts: 77
Joined: Sat Jan 21, 2012 11:22 pm
Location: Hondo, TX
Motorcycle: 1985 GL1200 Limited - Anniversary Edition

Previously owned:
1969 HD Sporty
1974 Yamaha 650

Re: Rear Brake Dragging

Postby BikerNewsman » Sun Jun 10, 2012 10:02 pm

Thanks for both of your replies. I've already stripped the bike down in prep for removing the fuel tank, brakes, wheels, etc. so getting to the calipers is simple now. lol The brake system has already been flushed and refilled with the hope that would resolve the problem. It didn't, thus the post. I'll try cleaning the calipers first and see if the kit's necessary. Thanks for the link to parts the site. Just by browsing it I've already found a few things I'll be needing in the near future. :)
"It ain't about the miles, it's all about the smiles".
My (non-commercial) motorcycle blog = http://dixieriders.wordpress.com/purpose/

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gof
Posts: 116
Joined: Wed Jun 06, 2012 9:39 am
Location: Crown Point, Indiana
Motorcycle: 2004 Titanium Gl1800 & 1984 Gold Wing Aspencade 1200

Re: Rear Brake Dragging

Postby gof » Tue Jun 12, 2012 9:49 pm

zamboni920 wrote:I had same problem when I bought my '84 GL1200I , a few years ago. I removed the caliper, got the pistons out. Cleaned and polished both piston and bore. Flushed and cleaned brake line and master cylinder. No kit, just cleaning. I thought I would have to do it again this year, but it is perfect still! Most likely it is corroded and with lots of gunk in the system. Brake fluid absorbs moisture and deteriorates over time.

I have the same issue 1984 Aspencade stored for 4 years. How easy is it to disassemble and clean the rear calipers? What did you flush it with?

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zamboni920
Posts: 250
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Location: Stavanger, Norway
Motorcycle: 1996 GL1500 SE with Hannigan 2+2 sidecar

Re: Rear Brake Dragging

Postby zamboni920 » Wed Jun 13, 2012 5:32 am

Gof.....read this entire post, then perform the steps suggested that apply to your situation:
viewtopic.php?f=5&t=3750#p13772




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