Brake Bleeding


Information and questions on GL1100 Goldwings (1980-1983)
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hogwild43
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Brake Bleeding

Postby hogwild43 » Sun Apr 17, 2011 5:03 am



Hi
Can someone tell me how to use A Mityvac to bleed the brakes on A 1983 goldwing I? I must be doing something wrong I can not get them to bleed.



Oldsmores
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Re: Brake Bleeding

Postby Oldsmores » Sun Apr 17, 2011 6:55 am

Sometimes air will make its way up the brake line to the top of the system. Try bleeding it out at the banjo bolt where the line connects to the brake handle. Crack the nut, squeeze the lever gently and hold, then tighten. Release and repeat.
Be sure to drape everything with rags - brake fluid will do a number on your paint.
This is also a good thing to try if you're having trouble bleeding the clutch.

hogwild43
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Re: Brake Bleeding

Postby hogwild43 » Sun Apr 17, 2011 7:29 am

Thanks
But it is the Right front and the rear brakes that I cant get to bleed out.

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WingAdmin
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Re: Brake Bleeding

Postby WingAdmin » Sun Apr 17, 2011 9:48 am

You need to make sure the reservoir is full, then hook up the Mity-Vac to the front right brake caliper and operate the vacuum until you are not seeing any more bubbles. The correct way to use it is to attach the vacuum line to the bleed nipple, pump up the vacuum, then while there is still vacuum, open the bleed nipple. Continue to pump, maintaining a vacuum, until no more air appears, then close the nipple while there is still vacuum being applied.

Once you've done the front, make sure the reservoir is topped up, and repeat the process on the rear brake. At that point you should have at least SOME pedal pressure, if not full pressure. If not, you can repeat the process (front, then rear). Let us know if that helps at all.

hogwild43
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Re: Brake Bleeding

Postby hogwild43 » Sun Apr 17, 2011 12:28 pm

OK I checked the reservoir is full I pumped up the vacuum and opened the bleeder but I get on brake fluid out and it holds the vacuum.

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WingAdmin
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Re: Brake Bleeding

Postby WingAdmin » Sun Apr 17, 2011 12:55 pm

So you draw just brake fluid out, no bubbles at all - but you're not getting any pressure at the foot pedal?

hogwild43
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Re: Brake Bleeding

Postby hogwild43 » Sun Apr 17, 2011 1:23 pm

I get on brake fluid on air and on brake pedal and it holdes the vacuum at 15 to 20 on the gauge.

hogwild43
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Re: Brake Bleeding

Postby hogwild43 » Sun Apr 17, 2011 2:47 pm

I have no brake fluid no air and no pedal I wrote on not no.

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Re: Brake Bleeding

Postby WingAdmin » Sun Apr 17, 2011 2:51 pm

Are you sure you're loosening the bleed nipple properly? It shouldn't need more than about 1/4 to 1/2 turn, but as soon as you do turn it, you should start getting fluid and/or bubbles out of it.

hogwild43
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Re: Brake Bleeding

Postby hogwild43 » Sun Apr 17, 2011 4:41 pm

Yes the nipple open 1/4 to 1/2 turn. I have bled breaks on car and trucks but I cant get this to bleed.

hogwild43
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Re: Brake Bleeding

Postby hogwild43 » Sun Apr 17, 2011 5:00 pm

I pulled the caliper and took it apart it has a broken seal i think it was blocking the bleader now i need new seals.
Thanks for all your help

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suvcw04
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Re: Brake Bleeding

Postby suvcw04 » Mon Apr 18, 2011 9:58 am

Just wondering. I have one of those 3 or 4 gallon cans that you pump to get vacuum into it and then put a hose down the oil dipstick hole or the tranny dipstick hole to suck out the fluid. Has anyone ever used one of these as a GIANT brake fluid vacuum?

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Re: Brake Bleeding

Postby WingAdmin » Mon Apr 18, 2011 10:04 am

suvcw04 wrote:Just wondering. I have one of those 3 or 4 gallon cans that you pump to get vacuum into it and then put a hose down the oil dipstick hole or the tranny dipstick hole to suck out the fluid. Has anyone ever used one of these as a GIANT brake fluid vacuum?


It would certainly work if you could get it on the bleed nipple.

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Re: Brake Bleeding

Postby WingAdmin » Mon Apr 18, 2011 10:05 am

hogwild43 wrote:I pulled the caliper and took it apart it has a broken seal i think it was blocking the bleader now i need new seals.
Thanks for all your help


Have a look at partsnmore.com, they have everything you will need to rebuild a caliper.

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gordonv
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Re: Brake Bleeding

Postby gordonv » Tue Apr 26, 2011 8:53 pm

I know you've solved you problem, but thought I would mention this.

When I bled all my Valkyrie lines, while parting it out, the cluch and 2 brakes would not flow fluid, until I used the lever a couple of times. It was almost like it was sealed. I also made sure I had the covers loosend on the reservoirs.

hogwild43
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Re: Brake Bleeding

Postby hogwild43 » Wed Apr 27, 2011 5:16 pm

O.K. I resealed the right front caliper and can not get them to bleed. I put the mity vac on pump it up and turned the bleader out 1/4 turn I get about 1 oz of brake fluid out of it then on fluid or air will come out and the mity vac holds the vacuum. What can I try next?

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Re: Brake Bleeding

Postby amorak » Wed Apr 27, 2011 11:34 pm

Hi Hogwild,

I am a newbie to the site, but not as a rider, journeyman mechanic or trades administrator (some knowledge - not a flake)
I also own a 83 1100 wing with linked brakes.

You probably know this already but a reminder never hurts - the GL1100 linked system rear pedal activates rear brake and rh front caliper, the front brake lever only activates the Lh front caliper - I have seen Honda factory techs mess this up!

suggestions - check that the rear master is clean - no debris to block lines or the rear master cylinder's internal ports. Check rear pedal stroke and return (especially if you had it apart) to ensure it is returning fully to allow the piston in the cylinder to open the ports. Also if the bike has original lines or has been "laid up" for a while check that the feed line between rear master reservoir and cylinder is not collapsing as the vacumn applies - this can cause a dribble of flow as the line draws closed and then.....nothing!
(and can happen on any of the soft lines in the system)

I don't use my Mityvac for this very reason - it happens quite often (old lines need to be replaced if prone to this). what I do is fill the reservoir, attach a short length of rubber line to the caliper bleeder and dangle it down into a clear bottle partly filled with fresh clean brake fluid - making sure the end of the line is completely submerged in brake fluid. open the bleeder about 1/8 to 1/4 turn and gently, slowly stroke the pedal through it's travel several times - keeping an eye on the rear reservoir level! This allows the air to purge thru the system and on the release stroke, the fluid is drawn back up out of the clear bottle into the caliper. 4-6 strokes usually does it. Close the bleeder without removing or exposing the hose in the bottle. Check the pedal feel/stroke. top up and bleed manually without the mityvac if required. wash up all residue and properly dispose of rags/waste fluid.

(Love our environment! The planet will survive what we do to it - We Won't!)
Good Luck! Ride Safe, Ride Hard
Amorak

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Re: Brake Bleeding

Postby goldtr6c » Thu Apr 28, 2011 3:41 am

Pull the bleeder nipple and check all the holes. Over time they can get clogged up with dirt and corrosion. Also after cleaning, put a dab of never sieze on the threads. This may save you a headache later on.

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Britanicus
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Re: Brake Bleeding

Postby Britanicus » Thu Apr 28, 2011 11:47 pm

I love how many times the word nipple has been used in this thread

Ride safe :):):)

hogwild43
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Re: Brake Bleeding

Postby hogwild43 » Fri Apr 29, 2011 6:33 am

Resealed the rear master cylinder all is good now brakes bleed out and working great now. Thanks to all for all your help this is the place to come for all the info you will need to fix your Goldwing.Thanks to all of you.

mottly
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Re: Brake Bleeding

Postby mottly » Fri Aug 05, 2011 12:38 am

Question for Amorak.
I have an 84 GL 1200A that was stored for ages. I just rebuilt all the hydraulics and now need to
bleed everything. Your comments on the rear master make good sense. But, during the process,
what do you do with the right front caliper while bleeding the rear? Or will all the air migrate to
the rear? None of my previous bikes had linked brakes so this is a new one for me.
I was able to bleed the left front caliper today. Will start on the rest tomorrow. Thanks for the hints.




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