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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Document Details

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Document Number / Seller:
31131 / Patrick Johnson
File Size:
44.92 MB
File Type:
ZIP
Language:
English
Printable:
Yes
Category:
Diesel Engine
Last updated / verified
Feb 16, 2025

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.

FAQ

What does the **assembly sequence** for the cooling system entail? keyboard_arrow_down

21 liters [22 U.S. quarts] is the coolant capacity for the engine only, indicating a specific fill requirement.

Reference the **specific** service interval parameters for oil changes. keyboard_arrow_down

2.8 liters [0.75 U.S. gal.] is the oil capacity for the bypass filter, a key component in the lubrication system.

What are the **designated** system architecture specifications for airflow? keyboard_arrow_down

64 cm H2O [25 in. H2O] is the maximum allowable turbocharged intake restriction, essential for optimal engine performance.

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Reviews (2)

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New
This manual covers everything you need to know about the Cummins NT 855. The diagrams are especially helpful. I also appreciated the quick response from support when I had questions. Perfect for any technician!
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New
The manual is incredibly detailed and easy to follow. The troubleshooting section helped me fix my engine issues in no time! Plus, the download process was smooth and I received the link immediately. Highly recommend!