Cummins NT 855 Engine Big Cam III & IV Troubleshooting and Repair Manual
This manual covers troubleshooting and repair procedures for the Cummins NT 855 Big Cam III & IV engines. It details symptom cause and correction charts, as well as system repair guides. Part number: 3810298-00.
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Models Covered & Key Technical Specifications
Cummins NT 855 Engine Big Cam III & IV Troubleshooting and Repair Manual: Cummins NT 855 Engines Big Cam III & IV Troubleshooting and Repair Manual Documents procedures for troubleshooting and repair.
- Calibrated Angular Speed: 2100 RPM corresponds to the maximum engine output speed Standards.
- System Enclosure Specs: 140 mm [5.5 in.] X 152 mm [6.0 in.] sets the bore and stroke dimensions Protocol.
- Critical Native Resolution: 13.5:1 to 17.2:1 -- signifies the compression ratio Architecture.
- Universal System Volume: The engine weight requires 1126 kg [2480 lb.] to 1221 kg [2690 lb.] for dry weight Framework.
- Core Consumption Data: Maximum allowable turbocharged intake restriction reaches 64 cm H2O [25 in. H2O] Parameters.
- Standard Travel Rate: Oil pressure at idle is a minimum of 70 kPa [10 psi] Norms.
Professional Workshop Service Manual & Technical Specifications
Cummins NT 855 Engine Big Cam III & IV Troubleshooting and Repair Manual: Cummins NT 855 Engines Big Cam III & IV Troubleshooting and Repair Manual Field-Reference
Assembly-Group: Cummins NT 855 Big Cam III & IV // Service-Level: Diesel Engine / Aftercooled Logic // Assembly-Group: Big Cam III & IV Components.
| Integrated-Framework | Parameters | Logic |
|---|---|---|
| Engine Identification | 179 kw (240 BHP) to 354 kw (475 BHP) | Core |
| Engine Speed @ Maximum Output | 2100 RPM | Core |
| Bore and Stroke | 140 mm [5.5 in.] X 152 mm [6.0 in.] | Core |
| Displacement | 14.0 liters [855 cu. in.] | Core |
| Compression Ratio | 13.5:1 to 17.2:1 | Core |
| Dry Weight | 1126 kg [2480 lb.] to 1221 kg [2690 lb.] | Core |
Documentation sections include: Troubleshooting (Procedures and Techniques), Engine Systems Repair (Cooling, Lubricating Oil, Combustion Air, Compressed Air, Fuel, Electrical, Base Engine Components), Engine Testing ("In-Chassis"), Engine - Remove and Install, and Engine Component Specifications.
Systems Covered
Sequentially requiring the user to understand the various engine systems, this manual documents the cooling, lubricating oil, combustion air, compressed air, fuel, and electrical systems. It also details procedures for engine testing and component replacement.
Key Specifications
The manual details essential specifications such as horsepower ranges, bore and stroke dimensions, and engine weights, providing a comprehensive overview of the engine's capabilities and physical characteristics.
Repair Procedures
The document outlines repair procedures for various engine components and systems, ensuring proper maintenance and troubleshooting of the Cummins NT 855 engine.
Torque specifications for critical components are documented to ensure proper rotational loosening prevention.
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