love2ride1111
Scoot Enthusiast
Posts: 222
Location: Indian Rocks Beach Florida
|
Post by love2ride1111 on Oct 30, 2020 18:09:36 GMT -5
So I have been riding around and noticed the front brake wasn't having the crisp stopping power that it usually has. I went to bleed it today and now I cant get any pressure back , what the heck  I pump the brake , hold it in , and release the nipple , close it with brake lever still in ,I tried bleeding it like 20 times. Yes some fluid comes out each time but no pressure. |
|
df41590
Scoot Enthusiast
Posts: 285
|
Post by df41590 on Oct 30, 2020 18:36:16 GMT -5
More than likely the master cylinder blew its seals, but it could be the hose so check the hose w/ the lever in and look for it bulging somewhere.
|
|
love2ride1111
Scoot Enthusiast
Posts: 222
Location: Indian Rocks Beach Florida
|
Post by love2ride1111 on Oct 30, 2020 18:38:51 GMT -5
There is no pressure once so ever. No leaking that I can see.
|
|
love2ride1111
Scoot Enthusiast
Posts: 222
Location: Indian Rocks Beach Florida
|
Post by love2ride1111 on Oct 30, 2020 18:45:21 GMT -5
If master cylinder blew a seal it would be leaking right ? Why would it blow a seal
|
|
|
|
Post by aeroxbud on Oct 30, 2020 18:54:54 GMT -5
Try taking the caliper off. And see if the piston is moving. It could of seized up and be stuck out.
There is not a lot to go wrong with these systems. So most likely the piston or master cylinder.
|
|
df41590
Scoot Enthusiast
Posts: 285
|
Post by df41590 on Oct 30, 2020 18:58:51 GMT -5
Master cylinder has an internal piston w/ seals on each side these can wear or come out of their groove and allow fluid to bypass the piston so you can only build up little to no pressure.
You could also have a break in the braiding imbedded in the rubber hose from M.C. to caliper which will cause the rubber portion of the hose to bulge out this could also cause little to no pressure.
|
|
love2ride1111
Scoot Enthusiast
Posts: 222
Location: Indian Rocks Beach Florida
|
Post by love2ride1111 on Oct 30, 2020 19:00:31 GMT -5
It would be rubbing against the wheel then and its not . I don't have the tools or set up to do that. My center stand got busted up recently so can even stand it properly.
|
|
love2ride1111
Scoot Enthusiast
Posts: 222
Location: Indian Rocks Beach Florida
|
Post by love2ride1111 on Oct 30, 2020 19:40:59 GMT -5
 I got pressure and it grabs brake. I will go try see how it is. I propped the bike some more vertical and added fluid to the top. Perhaps it was pulling air in since master cylinder was on angle ., Idk . Here is a pic inside. What is that silver thing in middle ? |
|
|
|
Post by aeroxbud on Oct 30, 2020 19:51:01 GMT -5
That brake fluid looks horrible. It should be a clear colour. It at least needs changing.
|
|
love2ride1111
Scoot Enthusiast
Posts: 222
Location: Indian Rocks Beach Florida
|
Post by love2ride1111 on Oct 30, 2020 20:03:26 GMT -5
That is all brand new. You might see the bottom of cylinder . What is the silver disk in the center ? |
|
|
|
Post by pinkscoot on Oct 30, 2020 20:16:26 GMT -5
|
|
|
|
Post by aeroxbud on Oct 30, 2020 20:30:11 GMT -5
That is all brand new. You might see the bottom of cylinder . What is the silver disk in the center ? Why is it a funny orange colour? I think the disc in the middle is to stop the diaphragm from sitting in the bottom. And blocking the passage way. |
|
love2ride1111
Scoot Enthusiast
Posts: 222
Location: Indian Rocks Beach Florida
|
Post by love2ride1111 on Oct 30, 2020 21:16:25 GMT -5
Idk , I do not see colors very well but it was from a brand new bottle of brake fluid .
|
|
love2ride1111
Scoot Enthusiast
Posts: 222
Location: Indian Rocks Beach Florida
|
Post by love2ride1111 on Oct 30, 2020 21:18:13 GMT -5
I took it for a ride up to the grocery store for some beer. It seems to only grab disk only when lever is pulled mostly in. .
|
|
|
|
Post by aeroxbud on Oct 30, 2020 21:22:30 GMT -5
If the fluid was low, you may of got air in the system. As you have a new bottle of fluid. Just bleed the whole system through.
Can't be too careful with brakes.
|
|
I pump the brake , hold it in , and release the nipple , close it with brake lever still in ,I tried bleeding it like 20 times. Yes some fluid comes out each time but no pressure.
