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Esprit Roue
Mathieu chulot

probleme de frein hydrolique ubgo 1005 60 v/52 v double drive chez kwk

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Bonjour, j'ai un problème de frein sur ma ubgo, quand je freine à fond ça ne freine que très peu, je suis donc allé a décathlon et ils me disent que il faut que je fasse une purge des freins mais qu'ils ne sont pas qualifié pour s'en occupé 

si il ne se trompe pas, qu'est ce qu'il faut que j’achète pour réglé ce problème et comment faire pour réparé ça?    

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Un kit de purge suivant le système de frein et du liquide minérale et de l'huile de coude !!!

N'oublie pas les cales pour les pistons des freins, des plaques de rechange.

Attention aux serrage vas-y mollo.

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Salut,

C'est de l'huile minérale(3euros) et le kit de purge(10euros) se trouve sur aliexpress.

Mais as tu tenté de resserrer la vis de réglage qui se trouve sur la poignée de frein?

Si tu as ta trottinette depuis moins de un an, c'est quasi sur que c'est une question de réglage et pas de purge ;)

Photo de la position approximative de la vis de réglage, c'est la numéro 1 FR-59.jpg

Edited by Astrobalt

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Hi,
hydraulic brakes on UBGO100X is so called "closed" system. It doesn't have a reservoir and bleeding is quite complicated, time consuming thing.
Moreover you have to adjust time by time brake settings as brake pads wears using Allen/Hex screw (see picture attachment).
 

UBGO-1005-brake adjustment.jpg

Edited by kmarty

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Bleeding:
Required bleeding kit for example: https://www.aliexpress.com/item/Ezmtb-Hydraulic-Mineral-DOT-2-in-1-Brake-Bleed-Kit-for-Full-Series-of-Shimano-Avid/32673274241.html (mine is something like: https://www.aliexpress.com/item/Bicycle-Hydraulic-Brake-Bleed-Kit-Tools-for-Mineral-Oil-For-Tektro-Shimano-MAGURA-Louise-Marta-HS33/32803684413.html but it is not necessary. One syringe, one tube and one adaptor is actually required (unfortunatelly dunno which adapter, I just used the first which fit).
The only bleeding screw is on brake caliper and when you bleeding brakes, this bleeding screw/hole _must_ be at the highest point of whole braking system (i.e. e-scooter has to be upside down). Use bleeding kit, where syringe, which is connected through bleeding screw into system, works as temporary reservoir. Constantly pumping with brake lever and syringe until you won't see any air buble in brake oil (it can take even several hours, namely on rear brake).

Correctly bleeded brake works flawlessly with one finger braking.

P.S.: As mineral oil I used Total LHM Plus oil (green) which is typicaly used on Citroën. It is slightly denser but definitely cheaper than Shimano or Magura oil.

Edited by kmarty

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