Commercial Business

Mitchell 1 adds color air brake diagrams to

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Mitchell 1 has added color air brake diagrams to its June update of, its comprehensive Web-based truck repair manual system.


The pneumatic diagrams will include the same widely-used features as the electrical wiring diagrams. In addition, the line colors were designed to conform to The Technology and Maintenance Council's Recommended Practice RP 423.


Readable at any zoom level, each diagram mirrors the colors of the pneumatic brake lines on the truck. Mitchell 1's CircuitSelect feature allows technicians to highlight the brake lines they are working on so they can focus their attention on where it's needed "to quickly and accurately diagnose the problem and make the required repair," according to the company.


For consistency, each air brake diagram is oriented the same, regardless of manufacturer, with the front brake chambers appearing at the top and the rear brake chambers at the bottom. From make to make, the components such as the compressor, service brake chambers, spring brakes, relays, and valves are easily identifiable with consistent icons.


The "searchable text" feature helps technicians find problems by allowing them to type in key words that will take them directly to the probable location on the diagram. includes detailed procedural information, color photos, diagnostics and wiring/pneumatic diagrams for virtually every truck built during the last decade and a half. For more information, visit

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