Here is one of the largest 1-18 service manuals ever produced by General Motors and it also happens to be the end of the line for the 1-18 washers. The manual goes into great detail about their new top of the line rapid-advance timer model.
Complete specifications and control panel views for each model, full cycle charts, wiring diagrams and complete servicing information is packed into this 111 page manual!
Models include: WDB, WDG, WC-5B, WC-5G, WC-6B, WC-6G, WC-7B, WC-7G, WC-8B, WC-8G, WC-9B, WC-9G, WIB, WIG, WCIB, WCIG, WEG.