York Compressor Onboard Air Schematic - ARB Locker Pneumatic Diagram (Bronco)

This document is a simple hand-drawn pneumatic (onboard air) system schematic, uploaded to a 1989 Ford Bronco gallery. It illustrates the flow of compressed air through an off-road onboard air setup. A York Compressor feeds air through a Check Valve into a manifold/distribution block connected to a Guage (gauge), Pressure Switch, and Safety Valve, and to an AIR Tank. From the tank, one line goes out to 'Accessories / Tools' (e.g., air tools or tire inflation), and another line passes through a Pressure Regulator before splitting to two Solenoid valves, each of which actuates an ARB Locker (air-actuated differential locker) at the front and rear. The diagram uses colored blocks and orange lines to represent components and air lines, with directional arrows at the check valve and solenoids indicating one-way flow/valving. A faint watermark reading 'Chexmix 2007' appears at the bottom, likely identifying the creator and creation year. A reader can learn the overall plumbing order for a York-compressor-based onboard air system: compressor → check valve → gauge/pressure switch/safety valve manifold → air tank → regulated output to ARB locker solenoids, plus an unregulated accessories/tools tap. No part numbers, pressures, fitting sizes, or torque specs are given.