DOT 3 problem


Information and questions on GL1100 Goldwings (1980-1983)
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tunaboy
Posts: 144
Joined: Sun Aug 05, 2012 8:46 pm
Location: Milwaukee, Wisconsin
Motorcycle: 1980GL1100 NICE!

DOT 3 problem

Postby tunaboy » Thu Jun 13, 2013 7:08 pm



I pumped out my brakes about 2 months ago. Everything went well and I had good front and finally a good rear brake. Today the rear seemed a little soft so I decided to pump it out again. The fluid in the rear was the color of iced tea. The stuff was almost water clear when I put it in. I did pump out the rear and did get a small bubble out. I then looked at the front master cylinder and it too is the color of iced tea??. The bike is always garaged and has not been in the rain yet. The fluid in the master cylinder does not mix with the fluid in the caliper and it was all the uniform tea color when I bled it. Any idea why the dot 3 changed color? Should I try a different DOT 3?
Tuna



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80-GL100-INT
Posts: 162
Joined: Sun Mar 17, 2013 8:53 pm
Location: Bedford, In.
Motorcycle: 1980 GL1100I Interstate (current)
Previously Owned:
1981 CB 750 Custom
1976 CB 750 Super Sport (punched to 900)
1986 Kawasaki 440 LTD
1974 Suzuki 550
1986 Kawasaki Ninja 600 (First Street Bike-way back in '88)
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Re: DOT 3 problem

Postby 80-GL100-INT » Thu Jun 13, 2013 10:06 pm

That's a good sign of the deterioration of the inner walls of the brake hoses. It does mix, when you apply the brake you are forcing the fluid in the MC to the caliper, when you release it returns. It is a very slight amount, but repetition and the weakness (swelling and relaxing) of the hoses will expedite this.
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tunaboy
Posts: 144
Joined: Sun Aug 05, 2012 8:46 pm
Location: Milwaukee, Wisconsin
Motorcycle: 1980GL1100 NICE!

Re: DOT 3 problem

Postby tunaboy » Fri Jun 14, 2013 8:04 am

Thanks 80-GL. I ordered the stainless lines this AM. I have been putting this off because $$ is tight. I was planning to do the fork springs first but my plans have changed. I am looking forward to testing the stainless lines...I hear that they really improve the brakes. The springs can wait. Thanks again for your input.
Tuna


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