Om422 Engine Workshop Manual ((hot)) May 2026

A key feature of the Mercedes-Benz OM422 engine workshop manual is its detailed section on cylinder liner service, which provides specific procedures for measuring the projection of cylinder liners and machining the seat of the collar in the crankcase.

• Cylinder Head Bolts: Stage 1 (pre-torque), Stage 2 (angle torque).
• Main Bearing Bolts.
• Flywheel housing bolts.

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Option C: OM422 Facebook Groups & Forums (The "Grey Market")

The Unimog and MB-trac enthusiast communities are fanatical. In the files section of the "OM422 Owners Group" (Facebook), users often share scanned copies of the "Engine Section" of the Unimog 427/437 workshop manual. This is the same engine block. om422 engine workshop manual

• Oil Pump: Procedures for checking pressure relief valves.
• Oil Capacity: Dry fill capacities and filter specifications.
• Diagnostics: Flowcharts for diagnosing low oil pressure, distinguishing between a faulty sender unit and actual worn bearings.

Maintenance Schedules: Guidelines for oil and filter changes 0;b9f;, valve clearance adjustments, and cooling system pressure tests. A key feature of the Mercedes-Benz OM422 engine

2.0 Introduction

The OM422 is an 14.6-liter, naturally aspirated V8 diesel engine. As a legacy engine, maintaining operational units requires precise technical documentation. The Workshop Manual (often published under specific service manual codes, commonly associated with the "Service Group 14" or "Engine 422" designations) is the primary resource for ensuring adherence to factory tolerances and safety standards. Cylinder Head Bolts: Stage 1 (pre-torque), Stage 2