Gen 4: 2011-2015 front brake problem - Kawasaki ZX-10R.net
 5Likes
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 12 Old 05-19-2015, 09:41 AM Thread Starter
GP Star
 
tone.r's Avatar
 
Join Date: Oct 2007
Location: CIN-OHIO
Posts: 2,297
Posting Frequency
  
front brake problem

Hey guys im working on a friends gen4, his front brakes doing some crazy stuff. If i grab the lever it feels real good, then theres no lever without pumping it 1 or 2 times

1st thing i seen was that he must have mixed brake fluid because it looked like a gel in the reservoir, so i flushed out and changed brake fluid, then i replaced the diaphragm it was jacked up.

2nd thing i rebuilt the master cylinder

3rd thing breed the brakes about 5 times, with a pump and manually

The brakes are not leaking fluid anyplace, I had one of my friends tell me it must be air still in the lines, I think its something else at this point any suggestions, HELP
tone.r is offline  
Sponsored Links
Advertisement
 
post #2 of 12 Old 05-19-2015, 09:57 AM
REPOST Enforcement Mod
 
SkyDork's Avatar
 
Join Date: Feb 2006
Location: Wesley Chapel, FL
Posts: 13,540
Posting Frequency
           
Garage
If brake fluid was mixed, you might have to do a complete disassembly and cleaning of the calipers. DOT 3, 4, and 5.1 are glycol based fluids and are relatively safe to mix. DOT 5 is pure silicone and incompatible with anything else. If he added DOT 5 in with the regular stuff that came with the bike, who knows what kind of crud is in the calipers.

The bleed technique is to start at the master cylinder and bleed it there first. Then move onto the calipers. The pump works great for roughing it in, but nothing beats a hand bleed to make sure all the air is removed. It's also helpful to strap the brake lever overnight with pressure before a final hand bleed the next day.

I may not be perfect, but at least I don't ride a Suzuki.

Ridding the Internet of bad grammar, 1 post at a time.
#WordCrimes




SkyDork is offline  
post #3 of 12 Old 05-19-2015, 12:18 PM
GP Star
 
Join Date: Jun 2011
Location: N/A
Posts: 2,805
Posting Frequency
   
Quote:
Originally Posted by SkyDork View Post
It's also helpful to strap the brake lever overnight with pressure before a final hand bleed the next day.
Was just popping in to chime in with this. This does wonders.
ZX10RArcher is offline  
Sponsored Links
Advertisement
 
post #4 of 12 Old 05-19-2015, 12:34 PM
GP Rider
 
White Fang's Avatar
 
Join Date: Dec 2014
Posts: 1,667
Posting Frequency
   
After all this you had best rebuild the whole system and replace all seals. If you are truly qualified. This bike needs all the brakes it can get. Don't mess around with the brakes.
White Fang is offline  
post #5 of 12 Old 05-19-2015, 12:35 PM
GP Rider
 
White Fang's Avatar
 
Join Date: Dec 2014
Posts: 1,667
Posting Frequency
   
Quote:
Originally Posted by ZX10RArcher View Post
Was just popping in to chime in with this. This does wonders.
Yes it does but you had best find out what the problem with the system is first.
White Fang is offline  
post #6 of 12 Old 05-19-2015, 02:37 PM Thread Starter
GP Star
 
tone.r's Avatar
 
Join Date: Oct 2007
Location: CIN-OHIO
Posts: 2,297
Posting Frequency
  
I started with the master first, I'm going to try that technique, but after talk to another member he think it might be the rotor and it could be because the bike owner did bend the front rim pretty bad.
tone.r is offline  
post #7 of 12 Old 05-19-2015, 03:10 PM
GP Star
 
dricked's Avatar
 
Join Date: Sep 2013
Location: Ontario Canada
Posts: 2,164
Posting Frequency
 
Well that's valuable information that would change the answer on where to start looking...
White Fang likes this.
dricked is offline  
post #8 of 12 Old 05-19-2015, 09:30 PM Thread Starter
GP Star
 
tone.r's Avatar
 
Join Date: Oct 2007
Location: CIN-OHIO
Posts: 2,297
Posting Frequency
  
Quote:
Originally Posted by dricked View Post
Well that's valuable information that would change the answer on where to start looking...
I talked to the bike owner today he told me he was hitting the disk with a rubber hammer, Im pissed he left out that valuable bit of info, I dicked around with this for about 12 hours
tone.r is offline  
post #9 of 12 Old 05-19-2015, 11:14 PM
GP Rider
 
White Fang's Avatar
 
Join Date: Dec 2014
Posts: 1,667
Posting Frequency
   
Quote:
Originally Posted by tone.r View Post
I talked to the bike owner today he told me he was hitting the disk with a rubber hammer, Im pissed he left out that valuable bit of info, I dicked around with this for about 12 hours
You are not gonna be able to fix the bike going about it like that. Dang, can't you all find a used rotor or something?
White Fang is offline  
post #10 of 12 Old 05-20-2015, 07:43 AM
WSB Rider
 
Niner1000RR's Avatar
 
Join Date: Feb 2015
Location: SE FL
Posts: 576
Posting Frequency
  
If all of the above didn't work, try cracking it at the banjo's on the calipers (obviously with pressure on the lever).

I've had issues in the past where air gets caught at the banjo and that seemed to be the only way to solve it...
Niner1000RR is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Kawasaki ZX-10R.net 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











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
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
Gen 1: FS: Brake pads, front axle, CRG shorty lever (brake), stock calipers (free) SecondGen7 Parts, Gear and Accessories 8 09-24-2013 11:38 AM
gen1 brake rotors calipers and front brake master cylinder BUGSY_MONTANA410 Parts, Gear and Accessories 3 06-13-2013 02:44 PM
Gen 3: Stock Front Brake Calipers With Brake Pads $100 Shipped 1fast10r619 Parts, Gear and Accessories 0 04-30-2013 12:50 AM
3rd Generation front brake problem readeth The ZX-10R 13 05-09-2009 08:57 AM
Front brake problem. Any ideas ? ninja9r Performance and Tech 19 04-23-2005 02:05 AM

Posting Rules  
You may post new threads
You may 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