Mercury MerCruiser D2.8L D-Tronic & D4.2L D-Tronic 2002+ In-Line Diesel Engines Service Manual
Provides comprehensive overhaul and repair procedures for Mercury MerCruiser D2.8L D-Tronic and D4.2L D-Tronic diesel engines, including disassembly, inspection, and assembly. Publication 90-860074-1.
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Sample pages from the Mercury MerCruiser D2.8L D-Tronic & D4.2L D-Tronic 2002+ In-Line Diesel Engines Service Manual manual
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Models Covered & Key Technical Specifications
Mercury MerCruiser In-Line Diesel Engines Service Manual: Mercury D2.8L D-Tronic & D4.2L D-Tronic (90-860074-1) - Service & Diagnostics (2002+) Diagnostic-Reference
Covers Inboard (MIE) and Sterndrive (MCM) models. | Mercury MerCruiser Diesel Engines File.
- Designated Throughput Data: 10 (8-1/2) Liters is the total oil capacity for the D2.8L model for essential lubrication requirements.
- Primary Angular Speed: 3600-3800 RPM establishes the maximum specified operating range for both models Parameters.
- Advanced Package Size: 10 (10-3/4) Liters defines the oil capacity for the D4.2L model for optimal operation Benchmarks.
- Defined Moment Values: 8 (6-1/2) Liters signifies the oil capacity of the oil pan for the D2.8L engine Configuration.
- Key Fit Tolerances: 11 (11-2/3) Liters is the capacity for the closed cooling circuit on D2.8L models Range.
- Essential Speed Rating: 13 (13-3/4) Liters is the capacity for the closed cooling circuit on D4.2L models Threshold.
Professional Workshop Service Manual & Technical Specifications
Mercury MerCruiser Operational Maintenance Wiring Manual: Mercury D2.8L D-Tronic & D4.2L D-Tronic In-Line Diesel Engines - Service & Diagnostics (2002+) Diagnostic-Reference
Performance-Values: D2.8L D-Tronic / D4.2L D-Tronic // Coverage-Scope: Inboard (MIE) / Sterndrive (MCM) Diesel // Architecture-Focus: Marine Diesel Engines.
| Technical Specifications Overview | Specification | D2.8L D-Tronic | D4.2L D-Tronic |
|---|---|---|---|
| Crankshaft Kilowatts (Horsepower) | 123 (165) | 186 (250) | |
| Propeller Shaft Kilowatts (Horsepower) | 112 (150) | 168 (225) | |
| Engine Type | In-Line 4 Cylinder Diesel | In-Line 6 Cylinder Diesel | |
| Displacement | 2.8 liter (169 cu. in.) | 4.2 liter (254 cu. in.) | |
| Firing Order | 1 - 3 - 4 - 2 | 1 - 5 - 3 - 6 - 2 - 4 | |
| Bore | 94 mm (3.700 in.) | 94 mm (3.700 in.) | |
| Stroke | 100 mm (3.937 in.) | 100 mm (3.937 in.) | |
| Compression Ratio | 16.5:1 | 16.5:1 | |
| Valve Clearance - Intake / Exhaust | Hydraulic | Hydraulic | |
| Max. Pressure Difference Between Cylinders | 500 kPa (72 psi) | 500 kPa (72 psi) | |
| Max. High Idle No Load RPM | 4200 ± 50 | 4200 ± 50 | |
| Governed RPM Setting (Begins At:) | 3850 ± 50 | 3850 ± 50 | |
| Rated RPM at Wide-Open-Throttle | 3800 | 3800 | |
| Low Idle RPM | 700 3 / 600 4 | 700 3 / 600 4 | |
| Oil Pressure (750 rpm) | 1.5 - 3.1 bar (22-45 psi) | 1.5 - 3.1 bar (22-45 psi) | |
| Oil Pressure (3800 rpm) | 3.5 - 5.6 bar (50-80 psi) | 3.5 - 5.6 bar (50-80 psi) | |
| Oil Temperature | 100 - 110 °C (212-230 °F) | 100 - 110 °C (212-230 °F) | |
| Thermostats (Water @ 70°C) | 82 °C (180 °F) | 82 °C (180 °F) | |
| Thermostats (Oil @ 95°C) | 95 °C (203 °F) | 95 °C (203 °F) | |
| Coolant Temperature | 80 - 85 °C (176-185 °F) | 80 - 85 °C (176-185 °F) | |
| Electrical System | 12-volt Negative (-) Ground | 12-volt Negative (-) Ground | |
| Alternator Rating | 949W, 14.6v, 65 Amp. | 949W, 14.6v, 65 Amp. | |
| Recommended Battery Rating | 750 cca, 950 mca, or 180 Ah | 750 cca, 950 mca, or 180 Ah | |
| Starter | 12v, 2.7 kW | 12v, 2.7 kW |
Organized into dedicated modules for comprehensive system coverage.
Introduction
This manual documents engine systems including: Introduction, Removal and Installation, Engine Mechanical, Electrical System, Fuel System, Cooling System, Intake And Exhaust System, Drive System, and Power Steering System. Rigorously demanding, this service manual provides detailed procedures for disassembly, inspection, assembly, and adjustment. It includes information on maintenance schedules and troubleshooting common issues.
Engine Mechanical Components
This manual details the engine mechanical components, providing specific information on various parts and their servicing. It covers procedures for disassembly, inspection, cleaning, and assembly of key engine parts like cylinder heads, pistons, and crankshafts.
Cooling System Details
The manual addresses the cooling system, including both seawater and closed cooling circuits. It outlines coolant requirements, checking and filling procedures, draining, and maintenance intervals for components like the water pump and heat exchanger.
Fuel System Diagnostics
Detailed procedures for the fuel system are provided, covering fuel delivery, injection pumps, and injectors. It includes diagnostic information for electronic diesel injection (EDI) systems, troubleshooting fuel-related issues, and maintenance for fuel filters.
Electrical System Components
The electrical system section covers starting and charging systems, glow plugs, and instrumentation. It provides guidance on inspection, testing, removal, and installation of electrical components, along with wiring diagrams.
Drive System and Power Steering
Information on drive systems, including ZF/Hurth transmissions and propeller shaft models, is presented. Additionally, the manual details power steering system checks, filling, and bleeding procedures.
Maintenance Schedules and Procedures
Comprehensive maintenance schedules are included, outlining routine and scheduled maintenance tasks for both Sterndrive (MCM) and Inboard (MIE) engines. This section details specific procedures for belt inspection, replacement, and fluid level checks for various systems.
Troubleshooting Guide
A detailed troubleshooting section is provided to assist in diagnosing and resolving common engine problems. It covers issues such as poor boat performance, engine noise, overheating, and fluid leaks, offering potential causes and corrective actions.
This document documents torque specifications for engine mounts to ensure proper cyclic stress resistance.
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