Brakes Unions: Confused

[flyerncle]

10 x 1 metric,UNF is for older cars like mini's etc.
Tee piece for brake light switch and tee to feed rears.

[Fourcandles]

Cheers thats great ill get them orderede and hopefullt fitted at weekend.

[voucht]

Hi,

Be careful not to mix up JIC3/8x24 (UNF thread) fittings with M10x1.00, they seem to screw in each other, but they are absolutely not compatible! Most of the time, metric fittings have a small cut (notch?) on each edge of the hexagonal part, it is a good way to see the difference.

But if you have a Sierra set-up, no worries, it is M10x1.00 all around : all master cylinder ports, front callipers and rear drums wheel cylinders (and I'm almost 100% sure that rear callipers are M10x1.00 too, if it is a 4 disc set-up)

So the easiest is to plan all your bulkheads, tee-pieces, etc. in M10x1.00, so there will be no confusion possible.

If you want to install a hydraulic brake light switch, a good one is the one from the VW Beetle, as it is M10x1.00, so you can install it on a 3 x M10x1.00 tee-piece (it will need a copper washer to be sealed though because it does not have any seat).

BTW, did you receive my reply to your PM?

Good luck

[flyerncle]

Metric 10x 1.0 are usually goldy coloured and UNF silver but not always gospel.

I have seen some hydraulic brake light switches have a tapered thread so take care before you fit it and as Sylvain says you will need to fit a copper washer to seal it and also fit it switch side down as it will trap air and give problems bleeding it.

[Fourcandles]

Cheers guys, your advice has been invaluble and thanks for the PM Sylvan.

I got all of the below from a supplier

Male and Female unions 2 x t and 1 x Brake Pressure switch.

And a flaring tool that good for fitted lines.

So sat afternoon I have a date with some lines and unions.

Wish me luck......never done brakes before!!!!

[flyerncle]

Just make sure you use the right flare as they are different.

Most fittings are male end and if you want to join a pipe you use both.