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MBE 900 4000 EGR Technician's Manual (7SE940)
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1 Introduction
1.1 Vehicle Inspection
1.2 Operator Information
1.3 Troubleshooting Tips
1.3.1 LOW POWER
1.3.2 FUEL SYSTEM
1.3.3 AIR SYSTEM
1.3.4 CHASSIS DYNAMOMETER TESTING
1.3.5 EXHAUST SMOKE
1.3.6 COOLANT LOSS
1.3.7 INTERMITTENT ISSUES
2 Components
2.1 Mbe 4000 Engines With Egr Systems
2.1.1 TURBOCHARGER AND EXHAUST MANIFOLD
2.1.2 EXHAUST GAS RECIRCULATION SYSTEM
2.2 Mbe 900 Engines With Egr Systems
2.2.1 TURBOCHARGER AND EXHAUST MANIFOLD
2.2.2 EXHAUST GAS RECIRCULATION SYSTEM
3 Egr Operation
4 Codes
4.1 Diagnostic Troubleshooting
4.1.1 SHUTDOWN-ENGINE PROTECTION FAULT CODE = RED
4.1.2 DERATE-ENGINE PROTECTION FAULT CODE = BLUE
4.1.3 PERFORMANCE FAULT CODES = YELLOW
4.2 Code Descriptions
4.3 Troubleshooting of Performance Codes
4.3.1 DESCRIPTION OF SID 146
4.3.2 TROUBLESHOOTING SID 146
4.3.2.1 146/0 — EGR Temperature above Normal
4.3.2.2 146/1 — EGR Temperature below Normal
4.3.2.3 146/2 — Erratic Data
4.3.2.4 146/7 — EGR Valve not Responding
4.3.2.5 146/12 — Bad Component
4.3.2.6 Verifying Repairs
4.4 Engine Protection
5 Testing
6 Detroit Diesel Diagnostic Link/Snapshots
6.1 Working With Dddl Snapshots
6.2 Using Snapshot Replay Controls
6.3 E-Mailing Snapshot Files
7 Snapshot Examples
7.1 Normal Engine Operation Snapshots
7.1.1 COLD ENGINE AT IDLE
7.1.2 WARM ENGINE WITH NO LOAD
7.1.3 MBE 4000 ENGINE AT VARIABLE SPEEDS AND LOADS
7.1.4 MBE 900 ENGINE AT VARIABLE SPEEDS AND LOADS
7.2 Problem Engine Operation Snapshots
7.2.1 ENGINE WITH NO EGR TEMPERATURE READING
7.2.2 ENGINE WITH ABOVE NORMAL EGR TEMPERATURE READINGS
8 List of Acronyms
9 Mbe Ddec Wiring Schematics
10 Service Information Letters
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