Plastic sensor in PWDA switch

[staggering]

Hi, can I ask if one replaces the plastic sensor / wired unit on the PDWA switch does removing old unit and screwing in new unit move the PDWA valve inside the unit ? and also does one have to bleed the brake system due to the drip / loss of brake fluid when removing / replacing the plastic sensor, many thanks

Cheers
Ian

[sujitroy]

Can safely unscrew it. The shuttle inside should not shift. If fluid is leaking out of the hole, you'll need to replace the O-rings on the shuttle.

[staggering]

Can safely unscrew it. The shuttle inside should not shift. If fluid is leaking out of the hole, you'll need to replace the O-rings on the shuttle.

Thanks very much for your quick response and advise

Cheers
Ian