rear brake no pressure


Information and questions on GL1200 Goldwings (1984-1987)
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demon00
Posts: 16
Joined: Sun Aug 25, 2013 12:16 pm
Location: Watertown, New York
Motorcycle: 1987 GL1200 interstate

rear brake no pressure

Postby demon00 » Sat May 28, 2016 10:15 am



i have a,1987 GL1200 interstate,my back isn't building pressure,nothing on the pedal at all...I tried bleeding just the back caliper,had no air but was told I had to bleed the system...I'm under the impression I need to bleed the front right caliper with the right master cylinder and then the back caliper with the pedal..is that right ????



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dingdong
Posts: 2864
Joined: Thu Apr 08, 2010 8:35 am
Location: Oklahoma City
Motorcycle: 1976 gl1000
1993 gl1500
2004 NRX1800 Rune

Re: rear brake no pressure

Postby dingdong » Sun May 29, 2016 7:35 am

The pedal operates the master cylinder which operates the right front and the rear. Both, right front first, will need to be bled using the pedal and keeping the master filled with fluid for "both". Unless I misunderstood your question.
Tom

A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.

demon00
Posts: 16
Joined: Sun Aug 25, 2013 12:16 pm
Location: Watertown, New York
Motorcycle: 1987 GL1200 interstate

Re: rear brake no pressure

Postby demon00 » Sun May 29, 2016 11:07 pm

I'm confused on my bike now... I started to bleed the right front caliper and drained the rear master cylinder, clymer book said to keep the dront master cylinder full so I didn't look at the back, now I cant seem to get fluid out of any caliper...any suggestions? I'm using a hand vacuum brake pump, Harbor freight lol

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dingdong
Posts: 2864
Joined: Thu Apr 08, 2010 8:35 am
Location: Oklahoma City
Motorcycle: 1976 gl1000
1993 gl1500
2004 NRX1800 Rune

Re: rear brake no pressure

Postby dingdong » Mon May 30, 2016 7:54 am

If you have been bleeding the linked brakes at the pedal and not checking the rear master you have drained it dry. The hand brake lever master cylinder only controls the left front caliper.

The Clymer manual has many mistakes, be careful using it.

Proper procedure is to bleed the right front caliper using the foot pedal then bleed the rear caliper using the foot pedal keeping the "rear" master full. Then proceed to the left front keeping the hand lever master cylinder topped up.
Tom

A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.

demon00
Posts: 16
Joined: Sun Aug 25, 2013 12:16 pm
Location: Watertown, New York
Motorcycle: 1987 GL1200 interstate

Re: rear brake no pressure

Postby demon00 » Mon May 30, 2016 3:35 pm

ok,really didnt like that manual,I have a Haynes on disk I'm look at.....the problem started with not having any pressure on the pedal, I dont use it heavily but must have for inspection...

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geraldm
Posts: 135
Joined: Fri May 15, 2015 12:07 pm
Location: pumphandle Saskatchewan ,Canada
Motorcycle: 86 gl1200 Aspencade

Re: rear brake no pressure

Postby geraldm » Mon May 30, 2016 7:41 pm

dingdong is right but you may need to be patient now that you have pumped the master dry (( KEEP IT FULL )) fill the master every couple times you bleed . it doesn't have to be right dry to suck a little air in and spoil all your fun

blackxpress
Posts: 1
Joined: Sun May 15, 2016 8:08 am
Location: Carlisle, Ohio
Motorcycle: 1985 GL1200 A

Re: rear brake no pressure

Postby blackxpress » Tue May 31, 2016 6:08 pm

demon00 wrote:ok,really didnt like that manual,I have a Haynes on disk I'm look at.....the problem started with not having any pressure on the pedal, I dont use it heavily but must have for inspection...


You should use the foot brake heavily. It controls 2/3 of your braking. You can get by without a hand brake in a pinch. I had to do that once. It got me home but it was no fun. I'd hate to think about riding without my foot brake. That's a suicide mission. You just need to fill up the rear master cylinder and bleed the brakes, starting with the right front since it's the furthest away from the master cylinder.

demon00
Posts: 16
Joined: Sun Aug 25, 2013 12:16 pm
Location: Watertown, New York
Motorcycle: 1987 GL1200 interstate

Re: rear brake no pressure

Postby demon00 » Wed Aug 03, 2016 11:46 pm

Issue resolved, ended up being bleeder valves seeping air.. had to pull them and Teflon tape and rebleed the brakes, all good now, thanks for all the help




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