• Required reading for all forum users!!!

    Welcome!
    Register to access the full functionality of the GSResources forum. Until you register and activate your account you will not have full forum access, nor will you be able to post or reply to messages.

    A note to new registrants...
    All new forum registrations must be activated via email before you have full access to the forum.

    A Special Note about Email accounts!
    DO NOT SIGN UP USING hotmail, outlook, gmx, sbcglobal, att, bellsouth or email.com. They delete our forum signup emails.

    A note to old forum members...
    I receive numerous requests from people who can no longer log in because their accounts were deleted. As mentioned in the forum FAQ, user accounts are deleted if you haven't logged in for the past 6 months. If you can't log in, then create a new forum account. If you don't get an error message, then check your email account for an activation message. If you get a message stating that the email address is already in use, then your account still exists so follow the instructions in the forum FAQ for resetting your password.

    Have you forgotten your password or have a new email address? Then read the forum FAQ for details on how to reset it.

    Any email requests for "can't log in anymore" problems or "lost my password" problems will be deleted. Read the forum FAQ and follow the instructions there - that's what we have one for...

  • Returning Visitors

    If you are a returning visitor who never received your confirmation email, then odds are your email provider is blockinig emails from our server. The only thing that can be done to get around this is you will have to try creating another forum account using an email address from another domain.

    If you are a returning visitor to the forum and can't log in using your old forum name and password but used to be able to then chances are your account is deleted. Purges of the databases are done regularly. You will have to create a new forum account and you should be all set.

Rear brakes locked up... anyone have experience with this symptom??

Gregory

Gregory

Forum Mentor
Past Site Supporter
I have a 78 gs1000e I am wanting to get rid of but needed to get the rear brakes working first. I bought a kit and I rebuilt the master cylinder. The rear brakes were sticking so I had a friend that cleaned the rear calipers very well.

When we took it for a test ride, the brakes stuck.

We assumed I had put the master cylinder together wrong so I took it off and rechecked everything. It was together properly but the spring was sort of stuck in. When I put it all back together it appeared to work fine.

I drove it a mile to get gas and the rear brake started bogging again. I didn't have tools with me so I rode it back home anyway. By the time I got close to home I was rapping out at 5k rpm and doing less than 25 mph in first gear.

When it finally died completely it was quite a sight.

The rear disk was bright orange and the plastic cap on top of the calipers was melting and smoking. Luckily a guy stopped who had a crescent wrench so I broke the line open to release the pressure to get her home.

Any advise? Could a bad line cause this or what? And.... I suppose I have to now replace the disk and calipers?
 
Sounds like the small return port in the master is clogged.
 
I was thinking the same. The hole is in the master cylinder body behind the brass fitting the fluid hose hooks to. Take the hose off and poke wire in the hole. Hook the hose back up and bleed the system again. I was thinking about this last night after you called me actually...then got into the Goldwing maintenance and forgot to call.

And as hot as it got youre probably gonna need to replace that rotor and the pads.
 
Thanks guys, I guess I am getting pretty skilled at taking the thing off. I hope I didnt damage the caliper and rotor by it heating up so much... any advise?
 
If the rotor was orange hot like you said then its junk. Pads are for sure toast also. Caliper body should be ok. replace what needs be with your spare parts and rebleed the system. Hopefully then piston seal is still ok. once the system is bled pump up the brakes and wedge a hammer handle between the pedal and the frame so the brake stays applied and let it set a few hrs to see if any fluid leaks out under pressure.

Start the bike on the center stand and put it in gear ....work the brake a bunch of times to be sure its releasing every time before riding it again.
 
What Chuck said, but I would add replacing every bit of rubber in the calipers and possibly the rear brake line of it's the original. And rebuild that master cylinder too, like Nessism said, that's probably the root issue.
 
He did rebuild the master and I cleaned and rebuilt the rear caliper..new seals, no piston pits or rust, cleaned the brake pads pins etc etc etc. It was dragging and we both thought maybe it was due to maybe the rubber cup in the master was goofed up or there was an air leak somewhere after we bled the system.

In any case he called me yesterday and he had rechecked to be sure the guts were in correctly and he couldnt get any pressure built up. He hadnt rebled the system and was trying to get it manually. He then got his power bleeder and bled the system and all was well. Took it out and this happened. Caliper definitely wasnt dirty and the guts in the master were correct. Weak link is most likely something plugged the return port.
 
Thanks everyone. I didnt work on it today because I had to cut up a tree in my yard. Anyway, I anticipate that the seals are toast since everything got hot enough to melt the plastic cover on top of the calipers. I think I may have an extra caliper...fingers crossed.
 
You must log in or register to reply here.
Back
Top