2015 SP rear brake pedal limp after siting for 4 months - Ducati.ms - The Ultimate Ducati Forum
 
LinkBack Thread Tools Display Modes
post #1 of 6 (permalink) Old May 8th, 2019, 7:58 pm Thread Starter
Senior Member
 
Farmer-Ted's Avatar
 
Join Date: Apr 2007
Posts: 197
2015 SP rear brake pedal limp after siting for 4 months

I got my 2015 Hypermotard SP out of 4 months of winter storage and the rear brake pedal has gone flaccid and has excessive travel. Basically I have to push on it way down with my heel before any braking (weak) occurs. There is no sign of any fluid loss. No leaks and the reservoir is full of fluid. It does not build up pressure if the pedal is pumped repeatedly.

Any idea what could cause this and the fix? I was going to bleed it but is there a special procedure for bleeding the rear with ABS?

2015 Hypermotard SP

2013 Hyperstrada (sold), 2009 Hypermotard (sold), 2005 999 (sold)
Farmer-Ted is offline  
Sponsored Links
Advertisement
 
post #2 of 6 (permalink) Old May 8th, 2019, 8:18 pm
Senior Member
 
1198SP's Avatar
 
Join Date: Aug 2017
Location: Phoenix, AZ, USA
Posts: 287
Garage
The soggy rear brake comes standard on all Ducati's. I'd be happy to walk you through the procedure but in all honesty, it is one of the most commonly asked questions on every Ducati forum. Do a quick search on bleeding the rear brake and I'm sure you'll find more info on the topic thank you could ever desire
1198SP is online now  
post #3 of 6 (permalink) Old May 9th, 2019, 12:20 am Thread Starter
Senior Member
 
Farmer-Ted's Avatar
 
Join Date: Apr 2007
Posts: 197
It wasn't just soggy, it required virtually the full master cylinder stroke before it would start to engage the brake. You could not push the pedal far enough with your foot still on the peg.

But oddly enough, I went back out tonight and it is working fine again. Brake engages with about 1-1.5" of travel. I'll leave it alone for now.

2015 Hypermotard SP

2013 Hyperstrada (sold), 2009 Hypermotard (sold), 2005 999 (sold)
Farmer-Ted is offline  
 
post #4 of 6 (permalink) Old May 9th, 2019, 3:53 am
Senior Member
 
Join Date: Jan 2019
Posts: 196
Quote:
Originally Posted by Farmer-Ted View Post
It wasn't just soggy, it required virtually the full master cylinder stroke before it would start to engage the brake. You could not push the pedal far enough with your foot still on the peg.

But oddly enough, I went back out tonight and it is working fine again. Brake engages with about 1-1.5" of travel. I'll leave it alone for now.

If it wasn't air in the system, what it may have been was the rubber piston seals around the caliper pistons which by virtue of design pull the calipers away from the disk after you release pressure on the pistons, simply drew the pads pretty far away from the disks.

This is not unheard of if the bike sits for a while. It can even happen overnight to some degree, but usually goes unnoticed.

https://www.aa1car.com/library/brake_calipers.htm

https://www.youtube.com/watch?time_c...&v=PE7yFJ8ldVc

Last edited by Pard; May 9th, 2019 at 5:47 am.
Pard is online now  
post #5 of 6 (permalink) Old May 9th, 2019, 7:43 am
Prolific Poster Award
 
Join Date: Jul 2010
Location: Grass Lake, Mi, USA
Posts: 5,394
Images: 4
Iíd still bleed it. You donít want that happening when youíre riding.

'96 Ducati SS900CR, '07 S4RS, '06 Busa, '77 Bonny,
'00 Superglide, '85 Sportster, '78 SR500
duc96cr is offline  
post #6 of 6 (permalink) Old May 23rd, 2019, 11:38 pm Thread Starter
Senior Member
 
Farmer-Ted's Avatar
 
Join Date: Apr 2007
Posts: 197
Went ahead and bled the rear brakes and haven't had any issues since. Could anything in the ABS module have caused this?

2015 Hypermotard SP

2013 Hyperstrada (sold), 2009 Hypermotard (sold), 2005 999 (sold)
Farmer-Ted is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ducati.ms - The Ultimate Ducati 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



Similar Threads
Thread Thread Starter Forum Replies Last Post
A new theory of that crappy rear brake... drdave39 Multistrada 77 Apr 9th, 2019 9:24 am
New way of fixing your useless rear brake when all else has failed Damascus Multistrada 44 Feb 17th, 2019 6:46 pm
Rear Brake Problem Daniel Blade Amos Monster 9 Sep 5th, 2017 8:49 am
Ducati 998 Rear Brake Issues Heisenberg Tech Forum 2 Aug 9th, 2016 8:15 am
WTB OEM Black Rear Brake Pedal 999 RC51-05 Parts and Accessories 2 Feb 11th, 2016 9:29 am

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