Rear Brake Fail - Kawasaki Versys Forum
 
LinkBack Thread Tools Display Modes
post #1 of 11 (permalink) Old 08-10-2014, 11:29 PM Thread Starter
Member
 
Join Date: Jun 2013
Posts: 71
Mentioned: 0 Post(s)
Rear Brake Fail

OK, so I was just out doing some low speed parking lot practice (want to get into moto gymkhana), I did some warm up figure 8's in the lot, and then stopped to set up a circle to practice with. When I got back on the bike, I had zero rear brakes; lever could be pushed to full extension with no resistance except for the spring. I couldn't see any fluid anywhere, and everything from lever to brake was dry. I rode around the lot for a bit and got some pressure back, but after trying a little more practice it was gone again. Riding home the pressure came back, and seemed fine again once I got home. Fluid reservoir is full, bike is an 09 with about 30000 km, and fluid has never been changed by me (3rd owner). This kind of riding means constant pressure on the rear brakes, so it is obviously hard on them, but...
Thoughts?

Last edited by Gsus; 08-10-2014 at 11:33 PM.
Gsus is offline  
Sponsored Links
Advertisement
 
post #2 of 11 (permalink) Old 08-10-2014, 11:35 PM
Member
 
Join Date: Oct 2013
Posts: 1,607
Mentioned: 0 Post(s)
A couple of thoughts.

You don't mention how old your bike is. Brake fluid accumulates moisture (hydroscopic). The moisture in the brake fluid will boil, cause steam and your brakes go away. When the steam cools the brakes come back.

The solution to this problem is to change brake fluid.

New brake fluid is clear. Brake fluid full of moisture is dark. You should change brake fluid at least once a year.
waltermitty is offline  
post #3 of 11 (permalink) Old 08-10-2014, 11:41 PM Thread Starter
Member
 
Join Date: Jun 2013
Posts: 71
Mentioned: 0 Post(s)
Quote:
Originally Posted by waltermitty View Post
A couple of thoughts.

You don't mention how old your bike is. Brake fluid accumulates moisture (hydroscopic). The moisture in the brake fluid will boil, cause steam and your brakes go away. When the steam cools the brakes come back.

The solution to this problem is to change brake fluid.

New brake fluid is clear. Brake fluid full of moisture is dark. You should change brake fluid at least once a year.
Thanks much, bike is an 09 with 30000 km. That makes total sense, as I was riding the rear brake constantly for about 15 minutes before the fail, and riding home would have cooled it off. Will change the fluid tomorrow.
Gsus is offline  
 
post #4 of 11 (permalink) Old 08-11-2014, 08:41 AM
Member
 
Join Date: Oct 2013
Posts: 1,607
Mentioned: 0 Post(s)
If the back needs it the front probably does, too.
waltermitty is offline  
post #5 of 11 (permalink) Old 08-11-2014, 01:12 PM
Super Moderator
 
fasteddiecopeman's Avatar
 
Join Date: Jul 2008
Location: Kelowna, BC - summer; Florence, AZ - winter
Posts: 17,822
Mentioned: 29 Post(s)
Quote:
Originally Posted by waltermitty View Post
If the back needs it the front probably does, too.

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


'08 V AZ, '15 V650LT BC
Ride to D2D 2013, June '13

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


Ride to D2D 2015, June '15

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


Ride to D2D 2016, June '16

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
fasteddiecopeman is offline  
post #6 of 11 (permalink) Old 08-11-2014, 01:14 PM Thread Starter
Member
 
Join Date: Jun 2013
Posts: 71
Mentioned: 0 Post(s)
On it. Thanks folks.
Gsus is offline  
post #7 of 11 (permalink) Old 08-11-2014, 02:15 PM
Member
 
BaileyMan's Avatar
 
Join Date: Feb 2012
Location: San Francisco
Posts: 601
Mentioned: 0 Post(s)
Maybe the brakes were overheated? You said you were on them for about 15 minutes straight. Wouldn't surprise me if they were hot if you're practicing gymkhana stuff.

Changing, or at the least checking, the brake fluid still wouldn't be a bad idea...

2011 Imperial Red
Givi V46 / V35's SW Motech mounts
Skidmarx hugger Moto Werks bar riser
Mondo Motors LED Driving Lights
A little bit of road rash
BaileyMan is offline  
post #8 of 11 (permalink) Old 08-11-2014, 03:09 PM
Member
 
invader's Avatar
 
Join Date: Mar 2008
Location: Kapuskasing Ontario Canada
Posts: 7,842
Mentioned: 3 Post(s)
Yes it would overheat and fade. You could also try bleeding it for now, then consider upgrading your brake pads.
invader is offline  
post #9 of 11 (permalink) Old 08-11-2014, 05:14 PM
Member
 
kballowe's Avatar
 
Join Date: Apr 2014
Location: Near St. Louis
Posts: 934
Mentioned: 2 Post(s)
While you're at it, run the pucks out and clean all the way around them with brake cleaner and a stiff brush.

This is a common problem on some cruiser bikes where crud builds up behind the brake pads. Maybe also on the Versys - I don't know for sure. Still, wouldn't hurt to clean while it's apart.
kballowe is offline  
post #10 of 11 (permalink) Old 08-11-2014, 10:19 PM
Super Moderator
 
Join Date: Nov 2008
Location: Kitchener Ontario
Posts: 7,188
Mentioned: 31 Post(s)
my son has a vacuum bleed kit, I was surprised what came out of the right caliper, I have a 07, bought in 08.The vacuum kit makes nice work, still a two person job if you want to speed it up without mistakes.
onewizard is offline  
post #11 of 11 (permalink) Old 08-11-2014, 10:39 PM
Member
 
Join Date: Oct 2013
Posts: 1,607
Mentioned: 0 Post(s)
Speedbleeders make it a five minute one man operation.
waltermitty is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Kawasaki Versys Forum 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
Display Modes
Linear Mode Linear Mode



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