Detroit Diesel Series 149 Service Manual. Original Detroit Diesel Allison Division of General Motors factory Service Manual for Series 149 Diesel Engines. This manual is housed in the original heavy-duty dealer binder and includes service information along with replacement page releases. Series: 149 Diesel Engines. Release Date: June 1987. Original dealer service binder included. This is an original OEM factory service manual, not a reproduction. Ideal for mechanics, Detroit Diesel collectors, restoration projects, marine applications, power generation, and industrial engine service. Genuine Detroit Diesel OEM Manual. Original GM Detroit Diesel Allison publication. Includes replacement page releases. Original yellow dealer binder included. Covers show normal shop wear, grease marks, stains, and scratches from use. Interior pages appear complete and readable. Includes June 1987 replacement page release. Some handwritten notes and check marks from previous shop use. Binding rings operate properly. Please review all photos carefully as they are part of the item description. Manual Type: Service Manual. Publication Date: June 1987. Country/Region of Manufacture: United States.