Have questions or want to discuss cycling? Join Now or Sign In to participate in the BikeRide community.

New: Take part in the June Giveaway for NAKTO Camel e-bike worth $739


Nightmare 1st Time Brake Bleed
#1
Hey guys, yep, as the title suggests I totally screwed up my first attempt at hydraulic disc brake bleeding on my Magura Louise 2007 brakes! Once both syringes had mineral oil in them I wasn't sure how to remove them without the oil spilling out. I got it wrong and ended up losing a lot of my oil from the system. Now it's all back together again there's virtually no power in the front brake due to lack of mineral oil! I'm going to go through the process again tomorrow to try to sort it out, so wish me luck fellas! Why must we make such dreadful mistakes to be able to learn eh??!!! Si
  Reply
#2
[attachment=2344]
(04-26-2011, 08:05 PM)Dalton2250 Wrote:  Hey guys, yep, as the title suggests I totally screwed up my first attempt at hydraulic disc brake bleeding on my Magura Louise 2007 brakes! Once both syringes had mineral oil in them I wasn't sure how to remove them without the oil spilling out. I got it wrong and ended up losing a lot of my oil from the system. Now it's all back together again there's virtually no power in the front brake due to lack of mineral oil! I'm going to go through the process again tomorrow to try to sort it out, so wish me luck fellas! Why must we make such dreadful mistakes to be able to learn eh??!!! Si

The easiest way I have found to bleed the brakes is to flush the system through first this gets rid of any muck in the tube and caliper, flush it both ways from top to bottom then bottom to top. once you've done that slacken the bleed nipple on the caliper and gently fill the reservoir. replace the lid on the reservoir and pull the brake lever once brake fluid shoild exit the bleed nipple. put an elastic band round the lever and tighten the bleed nipple then release the lever. make sure nipple and reservoir lid are tight this should cure the problem.
  Reply
#3
(05-10-2011, 04:02 AM)The Bike Doctor Wrote:  
(04-26-2011, 08:05 PM)Dalton2250 Wrote:  Hey guys, yep, as the title suggests I totally screwed up my first attempt at hydraulic disc brake bleeding on my Magura Louise 2007 brakes! Once both syringes had mineral oil in them I wasn't sure how to remove them without the oil spilling out. I got it wrong and ended up losing a lot of my oil from the system. Now it's all back together again there's virtually no power in the front brake due to lack of mineral oil! I'm going to go through the process again tomorrow to try to sort it out, so wish me luck fellas! Why must we make such dreadful mistakes to be able to learn eh??!!! Si

The easiest way I have found to bleed the brakes is to flush the system through first this gets rid of any muck in the tube and caliper, flush it both ways from top to bottom then bottom to top. once you've done that slacken the bleed nipple on the caliper and gently fill the reservoir. replace the lid on the reservoir and pull the brake lever once brake fluid shoild exit the bleed nipple. put an elastic band round the lever and tighten the bleed nipple then release the lever. make sure nipple and reservoir lid are tight this should cure the problem.

Hiya mate

Thanks for the advice.

When you say 'flush the system', what am I flushing it with? You mean just with clean mineral oil?

I'll try what you said. No garauntees I'll be able to get it right though!!

Cheers

Si
  Reply


Possibly Related Threads...
Thread
Author
Replies
Views
Last Post
 
12,966
11-06-2014, 08:59 AM
Last Post: JanJ
 
6,468
10-20-2014, 04:52 PM
Last Post: DaveM
 
5,712
01-13-2012, 10:06 AM
Last Post: Bill
 
14,031
11-08-2011, 06:59 PM
Last Post: Terryg
 
13,148
07-28-2011, 01:47 AM
Last Post: Avua

Forum Jump:

[-]
10 Latest Posts
Electric Bike Safety Tips
Today 03:56 AM
Hello!
Today 03:45 AM
Bike Computer /w No Minimum Circumferenc...
Today 03:40 AM
ZULIANI Oria 'helical' tubing 80s
Today 12:07 AM
Old Shimano cassette..how dismantle ?
Yesterday 11:16 PM
Rode my First Double Century in June
07-01-2022 10:50 AM
Need help identifying this frame.
06-29-2022 05:31 PM
NAKTO Giveaway June 2022
06-28-2022 03:52 AM
NAKTO GIVEAWAY
06-28-2022 12:16 AM
2022 road cycling season
06-27-2022 02:31 PM

[-]
Join BikeRide on Strava
Feel free to join if you are on Strava: www.strava.com/clubs/bikeridecom

[-]
Top 5 Posters This Month
no avatar 1. Jesper
24 posts
no avatar 2. Yevhen
8 posts
no avatar 3. ReapThaWhirlwind
8 posts
no avatar 4. Munich Transfers
7 posts
no avatar 5. aliccon
7 posts