Should the ABS pump be activated when flushing and bleeding the brake and clutch fluid

[Zardo]

I presume flushing the brake fluid will bypass the inner workings of the ABS pump unless the pump is activated and cycled by a diagnostic testing procedure whilst performing a pressure bleed (e.g. 1 bar of positive pressure).

Using gravity bleeding or vaccuum suction bleeding or reverse bleeding would probably bypass the ABS pump even more.

So should the ABS pump be activated multiple times whilst performing the brake liquid flushing?

Any opinions on that?

Thx

 

[bugsymike]

I presume flushing the brake fluid will bypass the inner workings of the ABS pump unless the pump is activated and cycled by a diagnostic testing procedure whilst performing a pressure bleed (e.g. 1 bar of positive pressure).

Using gravity bleeding or vaccuum suction bleeding or reverse bleeding would probably bypass the ABS pump even more.

So should the ABS pump be activated multiple times whilst performing the brake liquid flushing?

Any opinions on that?

Thx

I believe the recommended method is using suitable diagnostic software to activate the ABS pump.
However over many years in the motortrade I have had no problem either manually bleeding brakes on cars either with an operator working the pedal to my instructions (as in open bleeder, pedal down,close bleeder, pedal up) or pressure bleeder tool.
I am not a fan of vacuum bleeding tools as I have found in older/ tired master cylinders it can allow air in via the back seal.
Maybe I have just been lucky.