1993 - 1996 GM 10223533 Combination Valve Autopsy

This Kelsey-Hayes combination brake valve was removed from a 1995 Chevrolet Caprice. According to my parts catalog the original applications include 1994, 1995, and 1996 GM B-bodies (Buick Roadmaster, Chevrolet Caprice, and Chevrolet Impala SS) and 1993 - 1996 GM D-bodies (Cadillac Fleetwood Brougham) with anti-lock brakes. The original GM part number for this valve is 10223533; that number is stamped on the body of the valve. The ACDelco part number is 172-2104. You can click on the pictures below to see larger versions of the images.

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New Bonaldi Brake Valve Kit for 1971 - 1974 Pantera

A customer recently asked me if I had a rebuild kit for the Bonaldi proportioning valve used on his de Tomaso Pantera. I didn't then, but I do now! As usual, I've also written articles that describe how to disassemble and rebuild the valve. Here are the links:

Brake valve disassembly:

https://www.musclecarresearch.com/pantera-prop-valve-autopsy

Brake valve rebuild:

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Using a Grease Gun and Hydraulic Pressure to Remove Brake Valve Components

When disassembling a brake valve it's not uncommon to find an internal component that can't be easily pulled or pushed out using mechanical pressure. Heat from a propane torch coupled with compressed air sometimes works, but when can you do when compressed air doesn't get the job done, either? I've found that using hydraulic pressure will typically do the trick, and it's relatively easy to apply hydraulic pressure using a common grease gun. The challenge is connecting your grease gun to the ports on your brake valve. How can it be done?

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