Resend my activation email : Register : Log in 
BCF: Bike Chat Forums


Brake bleeding

Reply to topic
Bike Chat Forums Index -> The Workshop
View previous topic : View next topic  
Author Message

Lewissealey
L Plate Warrior



Joined: 27 Dec 2023
Karma :

PostPosted: 19:15 - 27 Dec 2023    Post subject: Brake bleeding Reply with quote

Trying to bleed the brake on a lexmoto 125 but I’ve tried to bleed them pumping the brake the reverse method and vacuum to no luck it’s a brand new brake system so there shouldn’t be any leaks

And advice
 Back to top
View user's profile Send private message You must be logged in to rate posts

stinkwheel
Bovine Proctologist



Joined: 12 Jul 2004
Karma :

PostPosted: 19:18 - 27 Dec 2023    Post subject: Reply with quote

There's often a big air bubble just at the top banjo bolt. Try bleeding the banjo like you would the bleed nipple with a rag sat under it to catch the drips. Once it's stopped farting air out there, move further down.
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.
 Back to top
View user's profile Send private message You must be logged in to rate posts

stevo123
Nitrous Nuisance



Joined: 10 Aug 2004
Karma :

PostPosted: 21:29 - 27 Dec 2023    Post subject: Reply with quote

I've had decent results using gravity and just tying the brake lever to the brake applied position with some tape an dleaving it overnight - the air travels upwards and it self bleeds. Gets you pretty close. Hope it helps.
____________________
Honda XL125-Yammy DTR125-Honda NSR125-Yammy TZR 250-Aprilia RS125-KTM RC 125-
KTM RC390-Kawasaki Ninja 636-KTM Duke 390
 Back to top
View user's profile Send private message Send e-mail You must be logged in to rate posts

Easy-X
Super Spammer



Joined: 08 Mar 2019
Karma :

PostPosted: 15:13 - 28 Dec 2023    Post subject: Reply with quote

In my experience an old, dirty brake system (with regards to the internals) is more likely to want to hang onto air bubbles. Stripping the system apart and using a can of proper brake cleaner wouldn't hurt for starters. Worst case scenario you might need a master cylinder rebuild kit.

When reassembling check how good your banjo washers are and make sure everything's tight. I spent 20 mins one time trying to bleed a system with a slightly loose banjo bolt and air was sneaking in.

Bleeding the master then adding the pipe and bleeding then adding the caliper and bleeding will obviously be messy but at least you know fluid is flowing through each stage.
____________________
Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter
 Back to top
View user's profile Send private message You must be logged in to rate posts

to v or not to v
World Chat Champion



Joined: 24 Nov 2020
Karma :

PostPosted: 20:50 - 28 Dec 2023    Post subject: Reply with quote

use one of these, makes bleeding a doddle-
https://www.ebay.co.uk/itm/404164972818?
____________________
current bike Yamaha Thunderace.
its old and fat, but its a damned good ride. the bikes not bad either.
 Back to top
View user's profile Send private message Send e-mail You must be logged in to rate posts
  Display posts from previous:   
This page may contain affiliate links, which means we may earn a small commission if a visitor clicks through and makes a purchase. By clicking on an affiliate link, you accept that third-party cookies will be set.

Post new topic   Reply to topic    Bike Chat Forums Index -> The Workshop All times are GMT + 1 Hour
Page 1 of 1

 
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum

Read the Terms of Use! - Powered by phpBB © phpBB Group
 

Debug Mode: ON - Server: birks (www) - Page Generation Time: 0.10 Sec - Server Load: 0.28 - MySQL Queries: 14 - Page Size: 43.07 Kb