This comprehensive workshop service repair manual provides detailed information for the Freightliner Business Class M2 100, 106, and 112 trucks. It covers a wide range of topics, including maintenance, service procedures, and troubleshooting. The manual contains detailed, step-by-step instructions with accompanying illustrations and diagrams. It includes information for various engine models, including the Caterpillar 3126/C7 I6, ISB5.9 I6, ISB6.7 I6, ISC I6, ISL I6, ISL-G I6, Detroit Diesel DD13 I6, Mercedes-Benz MBE900 I4, and Mercedes-Benz MBE900 I6. Additionally, the manual covers multiple transmission models, such as Eaton Fuller manual transmissions, Allison automatic transmissions, Freightliner AMT3 automated-manual transmissions, Mercedes-Benz automated-manual transmissions, and Mercedes-Benz manual transmission MBT520S-6D/MBT660S-6O. The manual features a vast array of information organized into sections, covering topics such as: * **Introduction:** A general overview of the manual and its contents. * **General Information:** Important information about the truck, including specifications, safety information, and identification. * **Tightening Torque:** A reference table with specific torque values for various bolts and nuts. * **Safety Precautions:** Important safety procedures to be followed during maintenance and repair work. * **Service Information:** Detailed information about specific service procedures and recommended practices. * **Maintenance:** Comprehensive maintenance schedules and instructions for regular maintenance tasks. * **Service/Special Tools:** Information about the required tools and equipment for various repair procedures. * **Engine Mounts:** Instructions for inspecting and replacing engine mounts. * ** Isolator Replacement:** Procedures for replacing the engine isolator. * **Drive Belts:** Information on drive belt inspection, adjustment, and replacement. * **Air Compressor:** Guidance on troubleshooting and repairing the air compressor system. * **Clutch System:** Detailed procedures for inspecting, adjusting, and replacing the clutch system. * **Hydraulic Clutch Control:** Information on the hydraulic clutch system, including troubleshooting and repair. * **Transmission System:** Comprehensive coverage of the transmission system, including inspection, adjustment, and repair procedures. * **Transmission Shift Control:** Troubleshooting and repair information for the transmission shift control system. * **Axle Alignment:** Detailed instructions for aligning the front and rear axles. * **Axle Oil Seals:** Procedures for inspecting and replacing axle oil seals. * **Differential Carrier:** Information on inspecting and repairing the differential carrier. * **Thru-Shaft Repair:** Guidance on repairing the thru-shaft. * **Single or Rearmost Axle Yoke:** Instructions for inspecting and replacing the axle yoke. * **Automatic Slack Adjuster:** Detailed information on the automatic slack adjusters, including inspection, adjustment, and repair. * **AD-IS Air Dryer:** Troubleshooting and repair procedures for the AD-IS air dryer. * **Diesel Exhaust Fluid System:** Information on the diesel exhaust fluid system, including inspection, maintenance, and troubleshooting. * **Datalink Repair:** Guidance on repairing the datalink system. * **Electrical Connection Protection:** Information on protecting electrical connections. * **Lighting System:** Troubleshooting and repair procedures for the lighting system. * **Multiplexing:** Detailed information about the multiplexing system. * **Cab Door & Frame:** Procedures for removing and installing the cab door and frame. * **Trim Panel Removal and Installation:** Instructions for removing and installing the trim panels. * **Window Glass-Mirrors:** Information on window glass and mirror inspection, repair, and replacement. * **Wiper & Washer:** Troubleshooting and repair procedures for the wiper and washer system. * **Heating & Ventilation:** Detailed information on the heating and ventilation system, including troubleshooting and repair. * **Air Conditioning:** Comprehensive information on the air conditioning system, including inspection, maintenance, and refrigerant service. * **Climate Control Panel:** Information on troubleshooting and repairing the climate control panel. * **Refrigerant Service:** Detailed procedures for servicing the air conditioning system. * **Bostrom Seats:** Information on inspecting, adjusting, and repairing Bostrom seats. * **Engine Systems:** In-depth coverage of the engine systems, including inspection, maintenance, and repair procedures. * **Air Intake Systems:** Detailed instructions for inspecting and repairing the air intake systems. * **Air Compressor Systems:** Information on the air compressor system, including inspection, maintenance, and troubleshooting. * **Alternators and Starters:** Procedures for inspecting, testing, and replacing alternators and starters. * **Engine Cooling Systems:** Detailed coverage of the engine cooling system, including inspection, maintenance, and repair. * **Radiator Systems:** Information on the radiator system, including inspection, maintenance, and repair. * **Throttle Control Systems:** Troubleshooting and repair information for the throttle control system. * **Frame and Frame Components:** Detailed information on the frame and its components, including inspection, maintenance, and repair. * **Suspension Systems:** Comprehensive coverage of the suspension systems, including inspection, maintenance, and repair. * **Front Axle Systems:** Information on the front axle systems, including inspection, maintenance, and repair. * **Rear Axle Systems:** Detailed information on the rear axle systems, including inspection, maintenance, and repair. * **Wheels and Tires:** Instructions for inspecting, maintaining, and repairing wheels and tires. * **Driveline Systems:** Complete coverage of the driveline systems, including inspection, maintenance, and repair. * **Brakes Systems:** Comprehensive information on the brake systems, including inspection, maintenance, and troubleshooting. * **Steering Systems:** Detailed information on the steering system, including inspection, maintenance, and repair. * **Fuel Systems:** Coverage of the fuel system, including inspection, maintenance, and troubleshooting. * **Exhaust Systems:** Information on the exhaust system, including inspection, maintenance, and repair. * **Electrical Systems:** Comprehensive information on the electrical systems, including wiring diagrams, troubleshooting, and repair. * **Instruments Systems:** Detailed information on the instrument systems, including inspection, maintenance, and repair. * **Controls Systems:** Information on the controls systems, including inspection, maintenance, and repair. * **Windshield Wipers and Washer:** Troubleshooting and repair procedures for the windshield wipers and washer system. * **Hood, Grille, and Cab Fenders:** Instructions for inspecting, maintaining, and repairing the hood, grille, and cab fenders. * **Restraint Systems:** Information on the restraint systems, including inspection, maintenance, and repair. * **Painting System:** Guidance on maintaining and repairing the paint system. * **Troubleshooting:** A comprehensive troubleshooting section with detailed steps for diagnosing and resolving common issues. * **Electrical Diagrams:** Detailed electrical wiring diagrams for the truck. This manual is an essential resource for anyone who works on Freightliner Business Class M2 100, 106, and 112 trucks. It provides a comprehensive guide for maintenance, repairs, and troubleshooting, helping you to save time and money.

The Freightliner Business Class M2 100, 106, 112, and their variants, are a versatile line of heavy-duty trucks designed for a wide range of applications, from regional hauling and distribution to specialized vocational tasks. These trucks are built on a robust platform, featuring a durable steel frame and a variety of engine options. The M2 100, with its standard cab, provides the perfect balance of maneuverability and cargo capacity for urban and suburban environments. The M2 106 and 106V, boasting extended cabs, offer enhanced driver comfort and space for overnight trips. Meanwhile, the M2 112 and 112V, equipped with the longest cab configuration, provide maximum driver comfort and ample space for additional equipment. These models are available with various wheelbases, allowing for customization according to specific cargo needs and operating conditions. With a range of powertrain options including Cummins ISB and ISC engines coupled with manual or automated transmissions, these trucks offer a strong combination of power, efficiency, and performance. The Freightliner M2 series is further enhanced by a comprehensive suite of safety features, including electronic stability control, lane departure warning, and adaptive cruise control. Its user-friendly dashboard and ergonomic design prioritize driver comfort and productivity, contributing to a safer and more enjoyable driving experience. Additionally, the M2's modular design allows for various customization options, enabling businesses to tailor the truck to their specific requirements. This flexibility makes the Freightliner Business Class M2 a reliable and efficient workhorse for diverse industries, ensuring optimal performance in a wide spectrum of operating environments.