Author Topic: Mystery Brake Linkage  (Read 640 times)

Offline JohnnyPopper

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Mystery Brake Linkage
« on: August 31, 2019, 05:48:47 PM »
So I'm under the C-30 and see a device that the rear brake line goes into before it splits to the two wheels.

It has a cylindrical body where a lever is attached at the center.

The lever is then connected to 90 degree arm that is fixed on the body of the axle.

I can only figure that it reacts to the rear axle flexing upon a heavy brake.

But what does it do?

It doesn't look sophisticated enough to be an anti lock system, but I could be wrong.

Any ideas? Thanks!
1957 Apache 3100 235 Inline 6, 3 on the tree
1973 C-20, 3+3 454 4BBL TH400  Water Injection
1978 K-10, 350 4BBL TH350 NP203 M.M. Part time Kit/Hubs
1980 C-10 under construction

Online bd

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Re: Mystery Brake Linkage
« Reply #1 on: August 31, 2019, 06:11:15 PM »
Scroll down to Reply #3, Height Sensing Proportioning Valve.
Rich
It's difficult to know just how much you don't know until you know it.
In other words... if people learn by making mistakes, by now I should know just about everything!!!
87 R10 Silverado Fleetside 355 MPFI 700R4 3.42 Locker (aka Rusty, aka Mater)

Offline JohnnyPopper

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Re: Mystery Brake Linkage
« Reply #2 on: September 01, 2019, 12:47:59 PM »
BD you're the man!

And thanks to VZ for putting that together!
1957 Apache 3100 235 Inline 6, 3 on the tree
1973 C-20, 3+3 454 4BBL TH400  Water Injection
1978 K-10, 350 4BBL TH350 NP203 M.M. Part time Kit/Hubs
1980 C-10 under construction

Offline roundhouse

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Re: Mystery Brake Linkage
« Reply #3 on: September 03, 2019, 07:53:25 AM »
Primitive anti lock

Iíve bypassed em in just about every vehicle cause they never work right