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Labeled 4Wheel & Off-Road diagram of a brake proportioning valve…

Labeled 4Wheel & Off-Road diagram of a brake proportioning valve with callouts and springs

A labeled technical diagram from Petersen's 4Wheel & Off-Road showing a disassembled brake proportioning/combination valve on plywood, with callouts for the rear and front inlets and outlets, pressure differential valve, secondary front outlet (plugged on 4x4s), and lettered springs and internal parts. Used as a reference illustration for the valve's components.

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