Rear Master Cylinder Bleed---GL1100 - Steve Saunders Goldwing Forums

 
LinkBack Thread Tools
post #1 of 9 (permalink) Old 12-26-2006, 11:30 AM Thread Starter
Lew
Member
 
Join Date: Oct 2005
Location: Dammeron Valley, Utah, USA
Posts: 209
Post imported post

Greetings and Ho, ho, ho, I rebuilt the rear master cylinder and could not get it to prime. I removed it for a bench test. The only time that I can get it to suck fluid into the unit is to hold my finger over the discharge to create back pressure.
When the system has been opened, how does one creat enough back pressure to prime it? Thanks, Lew
Lew is offline  
Sponsored Links
Advertisement
 
post #2 of 9 (permalink) Old 12-26-2006, 11:40 AM
Junior Member
 
Maddoc's Avatar
 
Join Date: Oct 2006
Location: Nuneaton, , United Kingdom
Posts: 7
Post imported post

what do you mean by finger over the discharge? do you mean bleed nipple?
Maddoc is offline  
post #3 of 9 (permalink) Old 12-26-2006, 11:50 AM Thread Starter
Lew
Member
 
Join Date: Oct 2005
Location: Dammeron Valley, Utah, USA
Posts: 209
Post imported post

Greetings, While the master cylinder is held in a vice and no hose connected to the discharge, I hold my finger directly on the master cylinder discharge. It creates enough pressure to squirt fluid around around my finger. When my finger is not over the discharge, it will not suck fluid in. The cylinder intake is flooded. Hope that helps. Thanks again, Lew
Lew is offline  
Sponsored Links
Advertisement
 
post #4 of 9 (permalink) Old 12-26-2006, 12:07 PM
Junior Member
 
Maddoc's Avatar
 
Join Date: Oct 2006
Location: Nuneaton, , United Kingdom
Posts: 7
Post imported post

Hi if the system has been drained to expel air from the system the procedure for bleeding the brake is best carried out by two people make sure fluid level is at max mark the reservoir must be kept at least half full of fluid during the bleeding procedure. attach a clear plastic pipe from the bleed screw to a container with some clean fluid in it. Press the lever to build up pressure then release bleed screw half a turn close the bleed screw before you get to the end of the travel then release lever and repeat until presure and no air is in the system. hope this helps.
Maddoc is offline  
post #5 of 9 (permalink) Old 12-26-2006, 01:37 PM
Member
 
aternie's Avatar
 
Join Date: Jan 2006
Location: Honolulu, Hawaii, USA
Posts: 203
Post imported post

First and foremost on these cylinders, did you confirm that the small hole in the cylinder body (return fluid feed) was clear? It will be very difficult to bleed if this is plugged (and will lock up the rear wheel when you ride it and brake a couple of times - been there, done that).

If clear, I always use aMityVac to bleed the rear -it seems to work the best.

Ernie, 81 GL1100.

Ernie
1981 GL1100I
1993 Ducati 900SS
aternie is offline  
post #6 of 9 (permalink) Old 12-26-2006, 02:33 PM Thread Starter
Lew
Member
 
Join Date: Oct 2005
Location: Dammeron Valley, Utah, USA
Posts: 209
Post imported post

Thanks for your help!! What is the best way to clear that hole. Will a small wire go through the hole? Thanks again, Lew
Lew is offline  
post #7 of 9 (permalink) Old 12-26-2006, 02:41 PM
Keeper of the Bookmarks / Moderator
 
AZgl1800's Avatar
 
Join Date: Oct 2006
Location: Oologah, Indian Territory, USA...
Year: 2002
Make: Honda
Model: GL1800 Hot Rod Yellow
Posts: 56,972
Garage
Post imported post

a small piece of steel wire, maybe a needle or straight pin, quitar steel wire string, etc...

~ John


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.



To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
AZgl1800 is online now  
post #8 of 9 (permalink) Old 12-26-2006, 02:42 PM
Member
 
aternie's Avatar
 
Join Date: Jan 2006
Location: Honolulu, Hawaii, USA
Posts: 203
Post imported post

Someone on this board suggested electric guitar strings/wire. I bought 3-4 different sizes at about .99 cents each and they work great.

Ernie
1981 GL1100I
1993 Ducati 900SS
aternie is offline  
post #9 of 9 (permalink) Old 12-26-2006, 09:53 PM
Postpubescent member
 
exavid's Avatar
 
Join Date: Sep 2004
Location: Medford, County of Jackson, Oregon, USA
Model: None at present
Posts: 36,382
Post imported post

I just clamp a wire from a wire wheel in a small vise grip and poke out the hole. You don't say which 1100 you have, if it's an 83 you need to bleed the linked front brake first, always bleed the one farthest away from the master cylinder first. If you have an 80-82 model the brakes aren't linked this doesn't apply.

One other possible bleeding problem that crops up now and then is a plugged bleed screw on the caliper. Usually these can be cleaned out with a bit of hand reaming with a properly sized drill bit. If you have one use a vacuum source to pull fluid into the system from the caliper bleed screw as aternie mentioned.

Not to insult you, but you did install the rubber piston cup with the open end facing the output end of the cylinder and with the large end of the spring facing the output end? If either of these are backwards the master won't work. (Don't ask)

ΜΟΛΩΝ ΛΑΒΕ
None at present
Past 'Wings: GL1100, GL1200, GL1500, GL1800

Current BMW C650GT
Paul W.
exavid is offline  
Closed Thread

  Steve Saunders Goldwing Forums > Forums > Goldwing Technical Forum

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Steve Saunders Goldwing Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Rear master cylinder, GL1100 britman Goldwing Technical Forum 1 08-24-2012 03:04 PM
Can't get new front master cylinder to bleed.. GL1100 Tom2 Goldwing Technical Forum 21 05-28-2010 12:49 PM
Rear master cylinder help GL1100 Izbit Goldwing Technical Forum 6 03-27-2010 12:28 PM
front brake master cylinder bleed hole Phils a winger at last Goldwing Technical Forum 13 02-22-2009 05:34 PM
do you bench bleed master cylinder ? don_berry Goldwing Technical Forum 5 04-01-2007 03:37 PM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome