How much fluid does a full brake flush need?
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From: SWFL
How much fluid does a full ABS brake flush need, and best practices?
My 2017 Dyna is due for a fluid flush. Ive done it on my FXR using a mighty vac easily, however with the ABS actuator Im unclear on best practice. Ive read that you need to do a traditional flush, then using the digital tech (I have a Diag4Bike which does the same) you follow instructions to cycle the pump to flush the actuator.
But once thats done, do I flush the fluid again? To clear the bad fluid moved out of the actuator and into the lines?
Also, anyone know the fluid capacity of the system? I.e. how much fluid do I need? One, two, three 11oz bottles? Going to use Bel Rey Dot 4.
Thanks
But once thats done, do I flush the fluid again? To clear the bad fluid moved out of the actuator and into the lines?
Also, anyone know the fluid capacity of the system? I.e. how much fluid do I need? One, two, three 11oz bottles? Going to use Bel Rey Dot 4.
Thanks
Last edited by Mchad; Nov 13, 2022 at 08:07 AM.
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From: SWFL
Thank you. Thats what I assumed but wanted to be sure. Thanks.
Seasoned HDF Member
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From: Sandy Eggo's North County
Before you start, use a syringe to pull the fluid out of the M/C. Then fill the M/C with fresh fluid from a sealed container. (Hygroscopic, you know.)
Then, start your process.
Then, start your process.
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From: Good roads, cold beer
why do that to the master cylinders? maybe I missed something here
Grand HDF Member
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From: Good roads, cold beer
interesting, not using HD DOT 4 Premium? with some of HDs ABS issues over the past years, I'd fear using aftermarket fluid.
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From: SWFL
To have fresh fluid pulled down the lines instead of what's been sitting in the MC for the last two years collecting H2O
I've never heard that before. Could easily be HD "use our products or else" BS but I'll research. Thanks.
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Grand HDF Member
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From: Good roads, cold beer
Am not a brake expert but just reading the thread.
I've never heard that before. Could easily be HD "use our products or else" BS but I'll research. Thanks.
its your bike, whatever works for ya. Good luck.
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Club Member
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From: SWFL
when using a Mityvac you pour fresh fluid into the reservoir as the level drops. I can't imagine the fluid in the MC is worse then whats in the lines. You seem to be stating the fluid in the MC absorbs moisture while fluid in the lines does not.
Am not a brake expert but just reading the thread.
https://www.harley-davidson.com/us/e...uid/p/41800770
its your bike, whatever works for ya. Good luck.
Am not a brake expert but just reading the thread.
https://www.harley-davidson.com/us/e...uid/p/41800770
its your bike, whatever works for ya. Good luck.
Maybe you think I'm only bleeding?
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From: East Coast, USA
I'd recommend you get something like the Ares 1L vacuum bleeder. It will make the job much easier.
https://www.arestool.com/products/1l...-fluid-bleeder
https://a.co/d/gBbhiWc
https://www.arestool.com/products/1l...-fluid-bleeder
https://a.co/d/gBbhiWc
Last edited by LQQK_OUT; Nov 15, 2022 at 09:42 AM.