Problem with Brake Cutoff Sensor Killing Power (Zeegr F1 Pro)

[Teos]

Thank

I've never had to replace just a lever on a hydraulic ebike brake, I've replaced the whole side. I will look around. You will definitely need to drain that sides tube to change it out, so you will need a refill and bleed kit for that. Aliexpress is by far the cheapest. I'll post the one I have here. Syd and Macky on YouTube are very friendly and go over different ways to bleed your brakes. I will look and see if Park Tools has any tutorials on changing a lever.
View attachment 21571

you very much for your help, I'll place the order for the brake lever, the throttle seems fine. i think the brake lever is the main problem - ill watch videos on how to bleed etc. Hopefully it all works fine when I change the brake lever.

 

[Annieolnie]

You are welcome. Let us know how it goes, or if you hit any snags.

 

[Teos]

While waiting for the replacement- I had to put my women in STEM energy in place. The electric is working fine, but I can't use the right break.

 

[Annieolnie]

Is the brake soft? It may be slowly losing fluid if the reservoir became cracked. It isn't caustic like on cars, it will just be high grade mineral oil.

 

[Teos]

Yea the right one is soft and the left is okay- maybe a bit soft unlike before the fall. I'm Hoping my order comes in before Friday. So I can replace and bleed as necessary and get done with this phase.

Is the brake soft? It may be slowly losing fluid if the reservoir became cracked. It isn't caustic like on cars, it will just be high grade mineral oil.

 

[Teos]

Hello Again. I finally got the lever - can someone tell me what to do please ?

 

[Annieolnie]

There are a number of videos you can watch this one is by Tektro which should be similar to yours, tell me if your levers are different. He replaces the ferrule in this, but if some didn't come in your brake bleeding kit, I don't know that you need to do that, unless your brakeline was crushed. See how it goes.

 

[Teos]

There are a number of videos you can watch this one is by Tektro which should be similar to yours, tell me if your levers are different. He replaces the ferrule in this, but if some didn't come in your brake bleeding kit, I don't know that you need to do that, unless your brakeline was crushed. See how

There are a number of videos you can watch this one is by Tektro which should be similar to yours, tell me if your levers are different. He replaces the ferrule in this, but if some didn't come in your brake bleeding kit, I don't know that you need to do that, unless your brakeline was crushed. See how it goes.
View attachment 21851

 

[Teos]

this video is quite complicated. I can replace the lever. I’ve been able to ride the bike using only the left brake up to now. After I install the new lever, do I need to do a full bleed of the entire brake system using the two-syringe kit from my bleed pack, or can I just bleed the lever itself?

 

[Annieolnie]

Well, they're Tektro. They are obsessing about their brakes. You can probably just bleed it from the top, unless it's squishy later. You can watch Syd and Mackie's video on bleeding, which may be easier to follow. One tip when doing a top bleed is to go around tapping on the tubing, it will move any bubbles that are clinging. If it stays soft you can also take the whole brake off the rotor all in one piece and let it hang straight down, so bubbles can move up the line. You may get it firm right away, which would be great. Do watch out for any leaks around that top ferrule though, just in case it was damaged in the crash.

 

[Teos]

Hello again. I have been able to change the lever, and my bike is working fine. Thank you for your help in doing this—I couldn’t have done it without you guys.

 

[Annieolnie]

Well, good job you! Happy riding!