bleeding the rear master and caliper


Information and questions on GL1200 Goldwings (1984-1987)
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poffutt
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Joined: Fri Jan 27, 2012 9:22 am
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Motorcycle: 1984 Goldwing Interstate GL1200

bleeding the rear master and caliper

Post by poffutt »



Okay I have rebuilt my rear master and rear caliper. I have assembled everything and have bought the mittyvac. I thought this was suppost to make it easy. But I cant get any fluid to suck down from the resevor. What am I doing wrong?



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D2D
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Re: bleeding the rear master and caliper

Post by D2D »

Never used the mittyvac, so I can't tell you what you are doing wrong other than ask if you are pumping the pedal to push the fluid through the line to the caliper?

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tricky
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Re: bleeding the rear master and caliper

Post by tricky »

I dont bother with a mighty vac

NOTE: When bleeding the rear brake system, bleed the right front caliper first, then the rear caliper.
Remove the bleed valve dust cap. Connect one end of a bleed hose to the bleed valve and put the other in a container.
Squeeze the brake lever or pedal, open the bleed valve 1/2 turn, then close the valve just before the lever or pedal reaches the end of its travel.
Release the brake lever or pedal slowly, and wait several seconds after it reaches the end of its travel.
Repeat until no more bubbles appear in the fluid coming out of the caliper.
Fill the fluid reservoir to the upper level mark.
Install the diaphragm and reservoir cover.

poffutt
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Re: bleeding the rear master and caliper

Post by poffutt »

Now I am confuesed

Tricky
"NOTE: When bleeding the rear brake system, bleed the right front caliper first, then the rear caliper."

Does the rear peddle break have something to do with the front????

Read more: /forum/viewt ... z1ptmf0Vgr

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seabee_
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Re: bleeding the rear master and caliper

Post by seabee_ »

The right front and rear brake are connected together. They operate from the foot brake pedal. In all brake systems, you always start bleeding the brake farthest from the master cylinder. In this case the right front, then the rear. Hope this helps.
Paul
CE1 Navy Seabees/RET
1981 to 2002
ASE Mechanic

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tricky
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Re: bleeding the rear master and caliper

Post by tricky »

poffutt wrote:Now I am confuesed

Tricky
"NOTE: When bleeding the rear brake system, bleed the right front caliper first, then the rear caliper."

Does the rear peddle break have something to do with the front????

Read more: /forum/viewt ... z1ptmf0Vgr
This might enlighten you to the way the gl1200 braking system works.

I suggest you should acquire a manual
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poffutt
Posts: 53
Joined: Fri Jan 27, 2012 9:22 am
Location: Houston, Texas
Motorcycle: 1984 Goldwing Interstate GL1200

Re: bleeding the rear master and caliper

Post by poffutt »

Very interesting, and sounds like good logic that the break peddle operates one in the front and one in the back and the hand break adds that extra to the front when needed. Great!

I will bleed the front first, but I think I have another problem. Their is no fluid in the rear master and no matter how many times I pump (using the right tecnich) can I get it to take the fluid from the resivor. How do I prime the master so that it will start pumping? Or do I need to do this?

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tricky
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Re: bleeding the rear master and caliper

Post by tricky »

Do the right front caliper first, if you cannot get fluid out of there then I would suggest a problem with the master cylinder or an air leak some where.
BTW your brake lines are over 25 years old..... I changed both my bikes over to flexible stainless several years ago.

poffutt
Posts: 53
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Location: Houston, Texas
Motorcycle: 1984 Goldwing Interstate GL1200

Re: bleeding the rear master and caliper

Post by poffutt »

Tricky, tell me more about these stainless lines for the breaks. How much are they, where did you buy them and how hard of a job is it to change them? I have removed the right front caliper and it is in the same shape as the rear caliper. gummed up stuck. I think I will need new lines.

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tricky
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Re: bleeding the rear master and caliper

Post by tricky »

There are several places to purchase them from, you being in the US you might try here in our sister forum http://www.goldwingfacts.com/forums/forum6/65982.html

I purchased mine from here http://www.classic-cycle.ca/ the guys name is Phillip
He did a good job for my Aspencade.

I found it much easier to remove the front fairing, it looks harder than it is.

Mmtsquid
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Re: bleeding the rear master and caliper

Post by Mmtsquid »

Just got my 84 last week, and I've spent the afternoon puzzled about these brakes...thanks for the education all!

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Totalchaos
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Re: bleeding the rear master and caliper

Post by Totalchaos »

Having read threw this I understand the logic and it's sound but I have one question. Do I bleed the right front using the foot pedal??
Live to ride ride to live!

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oldishwinger
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Re: bleeding the rear master and caliper

Post by oldishwinger »

Totalchaos wrote:
Fri Jun 12, 2020 12:30 pm
Having read threw this I understand the logic and it's sound but I have one question. Do I bleed the right front using the foot pedal??
Yes, the rear and the front right caliper are linked to the foot brake pedal

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Totalchaos
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Re: bleeding the rear master and caliper

Post by Totalchaos »

Just a heads up the hanes repair manual says it's the left front
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WingAdmin
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Re: bleeding the rear master and caliper

Post by WingAdmin »

Totalchaos wrote:
Mon Jun 15, 2020 8:58 pm
Just a heads up the hanes repair manual says it's the left front
It's the front right that is linked on the GL1200.

The GL1500 has the front left linked.



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