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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#1  Unread postPosted: May 10th, 2017, 3:48 pm

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Location: Durham NC
Local time: June 22nd, 2017, 8:05 am
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My Rides: 82 GL1100 Aspencade

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So the last few days I head out on my bike, for the first tenth of a mile I feel rear brake drag.
After the tenth of a mile it went away.
Today same issue, didn't have much to do so I took a look.
I cleaned the pistons up, compressed them, put it all back together and it still will not release the pressure.
I went ahead and got the OEM caliper rebuild kit ordered from Honda.
Then I found some new after market pistons, and ordered them.
The rear master cylinder is working fine.
Can anyone suggest anything else I am missing.

please don't say pads :useless:

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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#2  Unread postPosted: May 10th, 2017, 3:55 pm

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Location: Durham NC
Local time: June 22nd, 2017, 8:05 am
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My Rides: 82 GL1100 Aspencade

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:useless:

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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#3  Unread postPosted: May 10th, 2017, 3:56 pm

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Location: Van Nuys Ca.
Local time: June 22nd, 2017, 5:05 am
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My Rides: 1983 Interstate with '84 1200 engine, Solex single carb, and C5 ignition.
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The tiny return hole in the master cylinder may be clogged partially.

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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#4  Unread postPosted: May 10th, 2017, 4:15 pm

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Location: Durham NC
Local time: June 22nd, 2017, 8:05 am
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I got a new camera and I took pics in a format that does not work with posting.
I am not sure I have a stock master cylinder on this bike.
My parts will be in next week. I willl get some pictures up before then I hope.

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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#5  Unread postPosted: May 10th, 2017, 4:15 pm

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Location: Lebanon, PA
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My Rides: 1981 GL1200 Standard - 121,000 miles

1984 GL1200 Standard - 18,000 miles

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Yup... sounds like the return hole.

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Brian
Retired US Navy 1983-2003
If you aren't having fun doing it, find something else to do.


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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#6  Unread postPosted: May 10th, 2017, 4:44 pm

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Location: Mantua, New Jersey
Local time: June 22nd, 2017, 7:05 am
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My Rides: Restored '82 Standard GL1100 (with '83 engine) Hondaline bags.
'81 GL1100 - Gave up the ghost to give life to the '82!
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Possibly a simple fix for the return hole. Take the caliper off the rotor and pump the brake until the pistons are nearly out. The reservoir will be nearly empty. Push the pistons all the way back into the caliper until they bottom out. (Be careful you do not overflow the reservoir.) Do this same procedure a second time. If there is something clogging the return hole, this should help clear it.

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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#7  Unread postPosted: May 10th, 2017, 4:56 pm

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Yup... sounds like the return hole.


Yup! Sure is a clogged return hole. My front brake locked on on I45S just north of Houston once, an experience I will never forget!

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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#8  Unread postPosted: May 10th, 2017, 5:08 pm

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Location: Durham NC
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I wish I could get the pics to post. The pistons were a rust ring, they had crystallized brake fluid stuck to the rust.
I sanded them down and got them to turn and retract, I reassembled and got pressure to the pistons.
Tomorrow i will try pumping the pistons to clear the return hole.

Is the return hole in the front master cylinder reservoir or in the rear reservoir?

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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#9  Unread postPosted: May 10th, 2017, 5:29 pm

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Location: Van Nuys Ca.
Local time: June 22nd, 2017, 5:05 am
Country:  United States (us)
My Rides: 1983 Interstate with '84 1200 engine, Solex single carb, and C5 ignition.
2016 KLR 650
My Bike Logs forum link: viewforum.php?f=122

Profile Personal album

My YouTube Channel
Try opening the pics on computer then choose "save as" jpg, or png.

_________________________________

PLEASE! Use your Gallery album for saving pictures instead of using attachments or picture sharing sites, especially technical reference pics. This will make sure your images will ALWAYS be in your post and the discussion thread will make sense!
Go HERE and learn how to use the Gallery.


Image Image ImageClick to order CGW Stuff

If you know someone can embroider our 3" patch, let me know!
My photo gallery
How to use the Gallery, Part 1, Part 2

How to add your bike photo to the rotating banner and our Banner Rides Page.


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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#10  Unread postPosted: May 10th, 2017, 5:36 pm

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Location: Mantua, New Jersey
Local time: June 22nd, 2017, 7:05 am
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My Rides: Restored '82 Standard GL1100 (with '83 engine) Hondaline bags.
'81 GL1100 - Gave up the ghost to give life to the '82!
1st bike '81 Suzuki GN400

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Before putting back together, you need to flush the system big time! Crystalized brake fluid is not good.

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Gerry <///><
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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#11  Unread postPosted: May 10th, 2017, 5:42 pm

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Both masters have the tiny return hole. Whichever caliper is dragging do the piston press thing to clear the correct return hole.

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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#12  Unread postPosted: May 10th, 2017, 5:48 pm

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Location: Durham NC
Local time: June 22nd, 2017, 8:05 am
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My Rides: 82 GL1100 Aspencade

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https://www.youtube.com/watch?v=P7ieeU1RFA4

I get it now.... @ 7:52 of video.

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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#13  Unread postPosted: May 10th, 2017, 6:12 pm

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Yes that's the hole you'll be clearing pushing the piston back in with a c clamp.

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Vote NO on taxes, levies, and incumbents.
Every day I learn I know less than I thought I did.
Every time something is made idiot proof. The world produces a better idiot!
Maturity like wisdom seldom arrives without age. Far too often though age arrives without either.
ImageImage Image
Politicians are like diapers. They need changed often. For the same reason.
A fine is tax you pay for doing wrong. A tax is fine you pay for doing well.
Second place makes you first loser.


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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#14  Unread postPosted: May 13th, 2017, 7:11 am

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Going through the same this week with my 79 CBX ,,,same rear caliper as the Wing and CB 750 F , Rebuilt the rear MC cleaned the small hole dipped it overnight and new seals kit , Just ordered a new Piston also, But ? it looks like i have a collapsed Brake line 38 years old does that sometimes wont release pressure ,,,very slight drag still, Now trying new stainless brake hose ,,i will report back on this after i finish next couple days :headscratch:Image

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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#15  Unread postPosted: May 13th, 2017, 7:53 am

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Location: Durham NC
Local time: June 22nd, 2017, 8:05 am
Country:  United States (us)
My Rides: 82 GL1100 Aspencade

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Mine was the return hole.
I don't have parts yet.
I took out the master cylinder cleaned and blew brake cleaner through the hole.
I bench bled it to make sure the return hole was working.
Put it all back together and bled the system and they work fine.
Now when my parts get in I get to do it again. :)

It was probably for the best, I don't have a manual and have been winging it.
I think I am going to order a manual....right after this test ride!

Thanks guys, keep it safe.

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