Front brakes


Information and questions on GL1000 Goldwings (1975-1979)
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Wamego
Posts: 10
Joined: Sun Sep 19, 2021 7:49 pm
Location: Bartlesville, Oklahoma
Motorcycle: 78 gl1000

Front brakes

Post by Wamego »



Need help, sent my 78 gl1000 to a shop to have tires mounted, and when I got it back the front brakes won't work. I've bleed em, all I can. It won't get firm no matter how much I pump, but I see no leaks anywhere.

Any advice on where to start? I can pump all day and hold the brake lever and just push the bike forward. No clue what they did.


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AZgl1800
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Re: Front brakes

Post by AZgl1800 »

I do believe that I would be back at that shop and giving them a very stern lecture, and make them fix it back like it was.
~John

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Wamego
Posts: 10
Joined: Sun Sep 19, 2021 7:49 pm
Location: Bartlesville, Oklahoma
Motorcycle: 78 gl1000

Re: Front brakes

Post by Wamego »

Found the problem. The rubber stop the goes between the plunger and the spring in the master cylinder had torn and was allowing fluid to flow bake into the tank when compressed.

Just ordered a new rebuild kit from parts and more. Now to find the retaining pins for rear brake pads
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Wamego
Posts: 10
Joined: Sun Sep 19, 2021 7:49 pm
Location: Bartlesville, Oklahoma
Motorcycle: 78 gl1000

Re: Front brakes

Post by Wamego »

Any tips for not allowing the front brake lever to compress to far? I was thinking about heating the front brake lever and bending the end of it inward to act as a stop
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Rambozo
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Re: Front brakes

Post by Rambozo »

There is already a positive stop when the spring coil binds. But the lever usually can't move it that far, anyway.
Wamego
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Re: Front brakes

Post by Wamego »

Maybe when I get positive pressure in the system it won't happen
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Rambozo
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Re: Front brakes

Post by Rambozo »

Shouldn't matter. If there is something in the cylinder that cut the rubber cup, something is wrong. Is the spring damaged (rust)? Cylinder scored or pitted? Brake parts need to be 100% tip top. It's fair to say your life depends on it.
Wamego
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Joined: Sun Sep 19, 2021 7:49 pm
Location: Bartlesville, Oklahoma
Motorcycle: 78 gl1000

Re: Front brakes

Post by Wamego »

Nothing that I can find. I have rebuild kit coming. I believe that the plunger depressed too much which caused the damage. I have seen were some had spacers to prevent it. I also found that they installed a brake pad backwards which I don't understand how they did that.
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Re: Front brakes

Post by WingAdmin »

Wamego wrote: Mon Sep 20, 2021 3:38 pm Any tips for not allowing the front brake lever to compress to far? I was thinking about heating the front brake lever and bending the end of it inward to act as a stop
Replace your brake lines with stainless braided brake lines. You'll find this will fix this "spongy brake lever" problem and make your brakes razor-sharp and powerful. It was the single best upgrade I made to my GL1100.
Wamego
Posts: 10
Joined: Sun Sep 19, 2021 7:49 pm
Location: Bartlesville, Oklahoma
Motorcycle: 78 gl1000

Re: Front brakes

Post by Wamego »

Rebuilt front master cylinder. Reverse bled to brakes to force the air out. Now after I pump it it will stop but pressure will not stay built in brakes. There are no leaks. So i guess brake lines?
I'm not sure. Where do I get the lines and could there be any other issues?
Wamego
Posts: 10
Joined: Sun Sep 19, 2021 7:49 pm
Location: Bartlesville, Oklahoma
Motorcycle: 78 gl1000

Re: Front brakes

Post by Wamego »

Okay so rebuilt master, it blew a seal again. The system pressurized, then I felt something give. Pulled it apart seal blown again and no pressure in the system. I have done some research and the master cylinder from an 85 Goldwing will work to go on it. They are cheaper then rebuild kits, since they are still being made.

Now I wonder if anyone has a found a suitable replacement for the front calipers from a newer model.
Wamego
Posts: 10
Joined: Sun Sep 19, 2021 7:49 pm
Location: Bartlesville, Oklahoma
Motorcycle: 78 gl1000

Re: Front brakes

Post by Wamego »

The master cylinder for an 85 works great. But for some reason the brake lights don't come on. Even though it is the same connectors. But I now have front brakes


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