1955-1980 Mercedes Benz Unimog Type 404 Service and Repair Manual
Unimog Type 404 technical guide detailing operations, service, and repair. Document C4085-91017 provides information for models 404.010-404.117, 1955-1980.
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Mercedes Models Covered & Key Technical Specifications
Models: Mercedes Benz Unimog 404.0, 404.1
Sub-models / Variants: 404.010, 404.011, 404.012, 404.013, 404.111, 404.112, 404.113, 404.114, 404.115, 404.117, U82, U110, U80, U60, Open Cab, Closed Cab
Build Years: 1955–1980
Technical Data:
- Engine idle speed: 800–850 rpm
- Clutch pedal free travel: 30–35 mm
- Fuel tank capacity: 120 liters
- Cooling system capacity (404.0): 16.5 liters
- Cylinder head bolt torque (M 180 engine): 90 Nm
- Cylinder head bolt torque (M 130 engine): 110 Nm
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Technical Scope and Coverage for the 1955–1980 Mercedes Benz Unimog 404
- Covers 1955–1980 Mercedes Benz Unimog 404.0 and 404.1 off-road vehicle variants including U60, U80, U82, and U110 trim levels with open or closed cab configurations
- Official Ars Technica Electrographics technical data compilation based on original manufacturer specifications
- Contains 100+ technical illustrations, detailed wiring diagrams for 404.0 and 404.1 electrical systems, and precise tightening torque tables
- Downloads to your account within seconds of checkout
- Your order stays downloadable from your account for life
- Indexed PDF search covers every chapter and appendix
- Laid out for standard letter and A4 printing
- This 900-page reference set represents the definitive factory-derived archive for the entire 1955–1980 Unimog 404 production lineage, providing the specific calibration and fluid data required for long-term vehicle service.
Operational and Maintenance Documentation
The 1955–1980 Mercedes Benz Unimog 404 technical documentation provides a detailed look at the core vehicle systems. The manual segments topics into critical areas such as instrument cluster operation, transmission shifting patterns, steering system maintenance, and the complexities of the compressed-air brake setup. Readers will find extensive information regarding winter operations, the preheating systems for batteries and coolant, and the synchronization procedures for the engine’s dual-carburetor setups. Maintenance schedules are clearly defined, listing interval-based tasks like oil changes, valve clearance adjustments, and steering linkage lubrication.
Specification and Reference Data
Technical insights include comprehensive charts for fluid capacities, torque values, and electrical fuse coding. Coolant system capacity for the 1955–1980 Mercedes Benz Unimog 404 is documented at 16.5 liters for the 404.0. Valve clearance for the intake is listed at 0.11–0.20 mm in the cylinder head specification table. Cylinder head bolt torque values are documented in a multi-stage sequence, with M 180 engines requiring 90 Nm and M 130 engines requiring 110 Nm. Reference how factory workshop documentation is structured to better navigate the provided wiring diagrams and component identification keys. This 900-page Ars Technica Electrographics technical publication covers the 1955–1980 Mercedes Benz Unimog 404 range, offering in-depth specifications for engine, chassis, transmission, and hydraulic systems for owners and technicians.
Document Reference: Ars Technica Electrographics, technical data file compiled from original manufacturer information, 1955–1980
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