Brake Problem


Information and questions on GL1500 Goldwings (1988-2000)
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smilinjim
Posts: 3
Joined: Wed Mar 02, 2016 10:55 am
Location: Mason City,Illinois
Motorcycle: 1989 Honda Goldwing GL1500A

Brake Problem

Postby smilinjim » Wed Mar 02, 2016 11:12 am



Hi, on my 89 Honda Goldwing GL1500 when I apply my rear brakes, nothing happens. If I pump the pedal, the brakes don't grab like they should. The caliper is moving but does not stop the bike. I replaced the pads and rotor on back (they were worn). What is the problem?



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virgilmobile
Posts: 7652
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Brake Problem

Postby virgilmobile » Wed Mar 02, 2016 12:59 pm

First,the brake system should be bled of air starting at the front caliper and then the rear.

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WingAdmin
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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: Brake Problem

Postby WingAdmin » Wed Mar 02, 2016 4:17 pm

Are the pads actually moving to grip the rear rotor? When you apply the rear brake is the front brake working? i.e. are both the linked front and rear brakes not working with the pedal application, or is the front wheel braking normally, and it's just the rear that is not braking properly?

smilinjim
Posts: 3
Joined: Wed Mar 02, 2016 10:55 am
Location: Mason City,Illinois
Motorcycle: 1989 Honda Goldwing GL1500A

Re: Brake Problem

Postby smilinjim » Wed Mar 02, 2016 4:31 pm

I'm going to check that this weekend and let you know. Thanks Jim

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PastoT
Posts: 294
Joined: Sun Jul 01, 2012 9:20 pm
Location: Mt Home, Idaho
Motorcycle: 2002 GL1800 (107k)

Re: Brake Problem

Postby PastoT » Sat Mar 05, 2016 12:06 pm

If you're bleeding your brakes you should flush new fluid clean through them until the new clear fluid is evident at the drain end. The 1800's have a major recall for rear brake dragging and locking up, and being unable to get to a dealership without a 7 day waiting period I flushed the daylights out of mine and some really nasty stuff drained out. I flush mine yearly but still had a contamination problem. Just bleeding isn't enough for sure. Also be sure you bleed them in the right order or you'll still have air in the lines. I'm not saying caliper and master cylinder seals aren't worn but a few dollars of brake fluid and an excessive and meticulous flushing can't hurt. I thought I was flushing mine enough and I wasn't apparently.
Tom, in Mountain Home, Idaho
2002 GL1800 (Illusion Red) Non-ABS, 108k miles
Retired Air Force

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Happytrails
Posts: 653
Joined: Wed Sep 04, 2013 6:13 pm
Location: Tarentum, Pennsylvania
Motorcycle: 1991 Goldwing 1500 SE

Re: Brake Problem

Postby Happytrails » Sat Mar 05, 2016 1:56 pm

Guessing you bled the brakes when you changed pads and that rotor. Did you bleed front left caliper then rear caliper in that order? If so then maybe try bleeding them again just to be sure? If that doesn't work then you might need to rebuild the rear master cylinder. A pretty big job because its so buried under the bike. Or maybe the pistons are binding in the calipers due to corrosion.
1991 GL1500 SE Anniversary Edition
Sun Flare Gold Metallic
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WingAdmin
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Posts: 17046
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Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: Brake Problem

Postby WingAdmin » Mon Mar 07, 2016 2:03 pm

PastoT wrote:If you're bleeding your brakes you should flush new fluid clean through them until the new clear fluid is evident at the drain end. The 1800's have a major recall for rear brake dragging and locking up, and being unable to get to a dealership without a 7 day waiting period I flushed the daylights out of mine and some really nasty stuff drained out. I flush mine yearly but still had a contamination problem. Just bleeding isn't enough for sure. Also be sure you bleed them in the right order or you'll still have air in the lines. I'm not saying caliper and master cylinder seals aren't worn but a few dollars of brake fluid and an excessive and meticulous flushing can't hurt. I thought I was flushing mine enough and I wasn't apparently.


Also important is to flush your brakes BEFORE changing your pads.

The brake calipers are the lowest point in the brake system. All the water (which is heavier than brake fluid) goes down there, which is why you see corrosion in the caliper and on the pistons. All the other contaminants, metal, dirt, grime, sludge, all ends up down there as well.

When you change your pads, you have to retract the pistons first, in order to make them wide enough to fit the new pads. If you don't flush your brakes BEFORE doing this, when you retract the pistons, all that gummy, grimy, filthy brake fluid is pushed out of the caliper up the brake lines and into your master cylinder (and if it's a GL1800, into your ABS module!). The master cylinder has tiny pinhole-sized return ports that are easily clogged by this gunge, and this is a frequent cause of brakes getting locked on.

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JMMO
Posts: 23
Joined: Sat Apr 28, 2012 7:15 pm
Location: Adrian, Michigan
Motorcycle: 1998 GL1500 SE

Re: Brake Problem

Postby JMMO » Sun Mar 13, 2016 8:00 pm

Just installed speed bleeders on all my calipers & clutch. I highly recommend them. Makes the job of flushing out the old fluid a breeze. :D
Ride Safe,

Jim M

smilinjim
Posts: 3
Joined: Wed Mar 02, 2016 10:55 am
Location: Mason City,Illinois
Motorcycle: 1989 Honda Goldwing GL1500A

Re: Brake Problem

Postby smilinjim » Mon Mar 14, 2016 8:35 am

I bleed the brakes. and they work great. Thanks to all who responded. :D




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