1998-2007 Mercedes-Benz Sprinter (W903) Service & Repair Manual

1998-2007 Mercedes-Benz Sprinter (W903) Service & Repair Manual

Models Covered:

• Mercedes-Benz Sprinter 2500 (W903 Platform)
• Mercedes-Benz Sprinter 3500 (W903 Platform)
• Cargo Van, Passenger Van, and Cab Chassis Configurations

Engines Covered:

• 2.1L I4 OM611 CDI Turbo Diesel
• 2.7L I5 OM612 CDI Turbo Diesel
• 2.7L I5 OM647 CDI Turbo Diesel

Transmissions Covered:

• NAG1 5-Speed Automatic (722.6)
• G20 / G32 5-Speed Manual

If you are maintaining or rebuilding a first-generation Sprinter, the 1998-2007 Mercedes-Benz Sprinter (W903) Service & Repair Manual delivers detailed workshop guidance covering routine inspections, mechanical overhauls, and troubleshooting across the entire platform. Whether you operate a fleet of delivery vans, built out an adventure camper, or handle your own daily maintenance, this manual provides clear direction for every job under the hood and beneath the chassis.

This repair manual is written to serve both seasoned professional technicians and hands-on DIY mechanics. It walks you through every job step by step, pairing straightforward mechanical explanations with essential tightening torque values, fluid capacities, and assembly tolerances. From common diesel injector maintenance to full gearbox rebuilds, you get the exact data needed to tackle repairs properly and keep your van running at its best.

What Is Covered in the 1998-2007 Mercedes-Benz Sprinter Service & Repair Manual

Engine Mechanical, Lubrication & Cooling Systems

Provides complete overhaul and bench servicing procedures for the 2.1-liter OM611 and 2.7-liter OM612/OM647 Common Rail Diesel (CDI) engines. Covers cylinder head removal, camshaft timing, valve train inspection, piston and connecting rod service, and oil pump overhaul. Cooling system coverage includes thermostat testing, water pump replacement, radiator maintenance, and proper system bleeding routines.

Diesel Fuel Injection (CDI) & Turbocharger

Step-by-step procedures for the high-pressure common rail diesel fuel delivery network. Features removal and installation steps for CDI fuel injectors, high-pressure supply pumps, fuel pressure regulators, fuel rails, and secondary fuel filters. Also details turbocharger inspection, boost leak checks, charge air cooler plumbing, intake manifold decoking, and exhaust system servicing.

Transmissions, Clutch & Driveline

Full repair and maintenance instructions for both the NAG1 5-speed automatic and G20/G32 5-speed manual gearboxes. Contains clutch pressure plate replacement, flywheel checks, hydraulic slave cylinder bleeding, automatic transmission fluid and filter service, valve body removal, electrical conductor plate replacement, and complete bench overhaul steps.

Front & Rear Axles, Differential & Driveshafts

Detailed mechanical procedures for front axle knuckles, multi-piece propeller shafts, center support bearings, and universal joints. Rear axle coverage includes full differential carrier teardown, ring-and-pinion gear setup, backlash inspection, pinion bearing preload settings, and rear wheel bearing replacement.

Suspension & Steering Assemblies

Complete service guidelines for the unique front transverse composite leaf spring configuration, front strut cartridges, rear multi-leaf spring packs, and shock absorbers. Includes ball joint replacement, control arm bushing renewal, stabilizer bar links, power steering pump service, and steering rack overhaul along with complete wheel alignment angles.

Brakes & ABS Control

Full mechanical and hydraulic service coverage for front and rear disc brake systems, calipers, and master cylinders. Details brake hydraulic bleeding, brake booster vacuum testing, wheel speed sensor service, and mechanical parking brake shoe adjustment inside the rear rotor hat.

Electrical Systems, Modules & Diagnostics

System-level diagnostic workflows and repair instructions for starting and charging components, including heavy-duty alternators, starter motors, and battery management. Features testing procedures for the instrument cluster, exterior lighting, power windows, central door locks, wiper assemblies, and horns. Also outlines electronic control module (ECM) locations, sensor testing, and troubleshooting workflows for diagnostic trouble codes.

Heating, Ventilation & Air Conditioning (HVAC)

Service steps for manual and automatic climate controls, heater cores, blower motor resistors, auxiliary coolant booster heaters, and air conditioning compressors. Covers refrigerant oil capacities, condenser replacement, receiver-drier servicing, and expansion valve replacement.

Body, Cab & Hardware

Procedures for sheet metal alignment, front and rear bumper removal, cab mount bushings, side sliding door track adjustment, rear cargo door hinges, door latches, and weatherstripping. Includes structural dimensional points and frame alignment references for collision or rust repair.

Scheduled Maintenance & Technical Tolerances

Complete service interval charts, recommended fluid specifications, system capacities, wear limits, and fastener torque tables for every major assembly. Gives you the exact technical references needed to perform routine preventative maintenance with total accuracy.

Why Choose This W903 Mercedes Sprinter Service Manual?

The first-generation W903 Sprinter is legendary for longevity, but keeping it dependable requires following proper mechanical procedures and manufacturer tolerances. Relying on casual advice or partial writeups can lead to expensive mistakes, especially on common rail diesel systems and sensitive automatic transmissions. This comprehensive manual brings all necessary service steps, torque settings, and diagnostic workflows together in one structured reference, saving you substantial labor expense and keeping your van on the road where it belongs.

Format & Compatibility

This manual is provided as a digital PDF download. It features clear text and searchable keywords, allowing you to instantly locate specific components, trouble codes, or service instructions. It works reliably on Windows, macOS, Linux, iOS, and Android devices. You can read it directly on a garage laptop, reference it on a phone or tablet while working under the van, or print out specific pages to take straight to the workbench.

Download the 1998-2007 Mercedes-Benz Sprinter (W903) Service & Repair Manual Now

Equip yourself with the detailed repair instructions, assembly steps, and technical tolerances needed to properly service your first-gen Sprinter van. Download your copy today and tackle your next repair project with confidence.