after reading the other topic similarly headed it got me looking and then thinking Eh?
now this may just be down to some words used incorrectly.
lets take the GMC227
One of the notable features is the failure switch on the reservoir cap with a yellow identification tab.
but what does it mean. is it a failure switch or just a fluid level warning?
now the lovely PWDA valve
This twin line brake valve is fitted on the front bulkhead of the engine bay from 1978 on as opposed to the single line valve which was fitted on the rear subframe
now reading this i come to the conclusion (most likely incorrectly) that if one circuit fails it is the MC that controls that and the PWDA just restricts the pressure to the rear?
so could i fit this MC to a single line set up with an adjustable rear pressure valve and have a dual line setup? or is the PWDA the bit that shuts off the failed end rather that the MC.
why you may ask? well there is a possibility i will need to change to a dual brake system as i do not have a hand brake. PS yes i know all about the KAD OMP Sparco pedal box set ups ......