Tractor-Trailer.net Upgrade

Mitchell 1, a Snap-on Company, has added color air brake diagrams to its June update of Tractor-Trailer.net, its comprehensive web-based truck repair manual system. The pneumatic diagrams will include the same widely-used features as the Tractor-Trailer.net electrical wiring diagrams. In addition, the line colors were designed to conform to TMC's Recommended Practice RP 423.