more brake stuff


Information and questions on GL1500 Goldwings (1988-2000)
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idflyit
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Location: Oklahoma City, Oklahoma
Motorcycle: 1999 Goldwing gl1500se

more brake stuff

Post by idflyit » Mon Mar 23, 2015 9:10 pm



with the left front brake tied to the rear brake via the pedal..when the front break lever is pulled,do both fronts work together??...what is the call on re-building the rear master cylinder V.S. replacing the rear M.C......thx to all in ADVANCE



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Happytrails
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Location: Tarentum, Pennsylvania
Motorcycle: 1991 Goldwing 1500 SE

Re: more brake stuff

Post by Happytrails » Mon Mar 23, 2015 10:00 pm

Hopefully I'm understanding your question and the answer would be no. When you pull the front brake lever it activates the front right brake caliper. If you step on the rear brake the front left brake caliper and the rear brake caliper are linked and work together. Think opinions may vary on the rear master cylinder rebuild. Some will say yes no problem. But when I asked about the proportioning valve I never got an answer. As far as I know that part of the rear mc can't be accessed or rebuilt. I opted to replace the rear mc rather than guess the proportioning valve was ok (it may have well been ok). But my all my calipers, slave and master cylinders needed rebuilt and the brake pads/lines replaced so at that point I wasn't going to skimp out while I had the bike torn that far down. I had to pull the right header and the exhaust from the crossover back off the bike along with removing a lot of heat shields. It probably took me 10x longer than any shop mechanic would take but I ceramic painted my header that was starting to look rusty and used high temp paint on the rest of the exhaust. Be careful if you go to remove the header. I snapped a stud while trying to unbolt it. Hardly put any pressure on it. Had to replace a stud. Good luck with that rear master cylinder. Anybody who has done one on a 1500 knows the pain :D
1991 GL1500 SE Anniversary Edition
Sun Flare Gold Metallic
Vallant Brown Inset

idflyit
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Location: Oklahoma City, Oklahoma
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Re: more brake stuff

Post by idflyit » Mon Mar 23, 2015 10:25 pm

thank you so much for your reply. that's a vast amount of information. I did a very thorough brake bleeding of the system today. the brakes are working a lot better than they have been. it had a lot of hair in it, I'm suspect about the master cylinder. we'll see how long I keep these brakes working the way they are now. again thank you for your reply. B.R.Burns. OKC

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Happytrails
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Re: more brake stuff

Post by Happytrails » Mon Mar 23, 2015 10:51 pm

Thats a good idea. See how your brakes feel. Only work on the rear mc if you have to. :D
1991 GL1500 SE Anniversary Edition
Sun Flare Gold Metallic
Vallant Brown Inset

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bstig60
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Re: more brake stuff

Post by bstig60 » Sun Mar 29, 2015 11:48 am

Is there a way to adjust the front brake freeplay? Maybe I am missing something, but I can't seem to find it in any of the service manuals.
Bill

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Happytrails
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Re: more brake stuff

Post by Happytrails » Sun Mar 29, 2015 2:00 pm

bstig60 wrote:Is there a way to adjust the front brake freeplay? Maybe I am missing something, but I can't seem to find it in any of the service manuals.
Did you mean free play at front brake lever?
1991 GL1500 SE Anniversary Edition
Sun Flare Gold Metallic
Vallant Brown Inset

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bstig60
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Re: more brake stuff

Post by bstig60 » Sun Mar 29, 2015 5:53 pm

Yes I do. There is too much play there now before the brake takes affect....
Bill

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Happytrails
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Re: more brake stuff

Post by Happytrails » Sun Mar 29, 2015 7:09 pm

bstig60 wrote:Yes I do. There is too much play there now before the brake takes affect....
If you have OEM brake levers then I am stumped too. The lever has brass bushing insert that could wear some and the lever pushes on the piston to the front brake master cylinder.
1991 GL1500 SE Anniversary Edition
Sun Flare Gold Metallic
Vallant Brown Inset

steveodam
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Re: more brake stuff

Post by steveodam » Thu Jun 29, 2017 5:12 pm

Good Evening Sir, If you are having a lot of free play at the lever before the brakes activate, you still have air in the system. The banjo fittings are notorious for trapping air. Pump up your lever and while holding the pressure brake loose the banjo bolt and more air will come out. do that several times and you will take that free play out of the lever. After that bleed off the calipers in the same fashion, then out the bleed screws. It's a long process, but it gives you a good solid feel on your lever and brake pedal. Good luck Steve.

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Erdeniz Umman
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Re: more brake stuff

Post by Erdeniz Umman » Fri Jun 30, 2017 3:17 am

Happytrails wrote:
Sun Mar 29, 2015 7:09 pm
bstig60 wrote:Yes I do. There is too much play there now before the brake takes affect....
If you have OEM brake levers then I am stumped too. The lever has brass bushing insert that could wear some and the lever pushes on the piston to the front brake master cylinder.
I think the brass bushing is only on the clutch lever.

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Corkster52
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Re: more brake stuff

Post by Corkster52 » Fri Jun 30, 2017 8:01 am

Have you tightened the knurled ring on the cable just below the master cylinder?

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MikeB
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Re: more brake stuff

Post by MikeB » Fri Jun 30, 2017 11:58 am

Corkster52 wrote:
Fri Jun 30, 2017 8:01 am
Have you tightened the knurled ring on the cable just below the master cylinder?
For the brake? The brakes are hydraulic.
MikeB
Tacoma, WA, USA

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Fiberthree
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Re: more brake stuff

Post by Fiberthree » Fri Jun 30, 2017 6:17 pm

Corkster52 wrote:
Fri Jun 30, 2017 8:01 am
Have you tightened the knurled ring on the cable just below the master cylinder?
I think those are for the throttle. Like MikeB said, the brakes are hydraulic.


Ed

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