Couple questions before I do my brakes

MrJLR said
I started a thread in "General"....but that was the wrong place and plus I have a few last questions
1) The proportioning valve goes to the REAR brakes - yes ?
2) Is the brake line closest to the firewall the rear line?
3) The metal lines off the M.C. have loops bent in them - is it ok to cut out the loops and insert the P.V. there? (see pics)
4) Any tips you can offer, things to watch out for ?

Thanks!

:burnout:

FIRST please show the distribution block/ device in there now to show the line routing. Maybe he put the later prop valve in

1...Yes, prop valve meters rear

2...No, the firewall line is the FRONT brakes (largest section of the master)

3...I would cut a straight section, not the loops, one reason being it will be impossible to get good flare

4...Again, would like to see routing at "present" distribution block

Fittings sizes of two masters are not necessarily the same. Line fittings at cylinders, at old style dist. blocks, and hose junctions are normally "standard" 3/16 nuts, but nuts at the master and late model prop valve (factory) are almost always "specially sized."

Be sure to bench bleed the master. You can buy a kit at the parts stores for 15 bucks or so

This below is what (or similar) your original 68 distribution block / switch should look like. IT IS NOT a prop valve. Notice how symmetrical it appears

Below is what a factory 73 prop valve looks like. Notice how "lopsided" it seems

The smaller piece is a metering valve, used "downstream" towards the rear. It is not used on all installations.