Komatsu 12V140-1 Series Diesel Engine: A Powerhouse for Demanding Applications
The Komatsu 12V140-1 Series Diesel Engine is a formidable force in the world of industrial power, renowned for its exceptional performance, durability, and versatility. This engine is the heart of a wide range of heavy-duty equipment, including excavators, wheel loaders, and mining machinery, where it delivers unmatched reliability and efficiency.
Overview
The 12V140-1 Series Diesel Engine is a 12-cylinder, V-type, four-stroke, turbocharged, and aftercooled engine. It employs advanced engineering and innovative technologies to achieve a perfect balance of power, fuel efficiency, and emissions compliance. With its robust construction and meticulous attention to detail, this engine sets the benchmark for performance and dependability.
Technical Specifications
The Komatsu 12V140-1 Series Diesel Engine boasts an impressive array of technical specifications that contribute to its superior performance:
* **Displacement:** 25.4 liters
* **Bore:** 140 mm
* **Stroke:** 165 mm
* **Compression Ratio:** 16.5:1
* **Maximum Power Output:** 903 kW (1,212 hp) at 2,000 rpm
* **Maximum Torque:** 5,609 Nm (4,136 ft-lb) at 1,200 rpm
* **Fuel System:** Direct injection, common rail
* **Turbocharger:** Single, wastegated
* **Aftercooler:** Air-to-air
Engineering Excellence
The 12V140-1 Series Diesel Engine incorporates an array of cutting-edge engineering features that enhance its performance and durability:
* **Electronically Controlled Fuel Injection:** Ensures precise fuel delivery, optimizing combustion efficiency and reducing emissions.
* **Variable Valve Timing:** Adjusts valve timing to maximize engine performance across a wide range of operating conditions.
* **Common Rail Fuel System:** Delivers high injection pressures for improved fuel atomization and combustion.
* **Wastegated Turbocharger:** Regulates boost pressure for optimal torque and power output.
* **Air-to-Air Aftercooler:** Cools the intake air to increase volumetric efficiency and reduce NOx emissions.
Exceptional Durability
The 12V140-1 Series Diesel Engine is built to withstand the most demanding operating conditions, ensuring maximum uptime and minimized maintenance costs:
* **Robust Cast Iron Cylinder Block:** Provides a rigid and stable foundation for the engine.
* **Forged Steel Crankshaft:** Endures high loads and fatigue, ensuring long-term reliability.
* **Hardened Valve Seats and Guides:** Enhance wear resistance and prolong valve life.
* **Heavy-Duty Bearings:** Support critical components, reducing friction and extending service intervals.
* **High-Pressure Lubrication System:** Delivers a constant supply of oil to all critical components, minimizing wear and tear.
Environmental Compliance
The 12V140-1 Series Diesel Engine meets the latest emissions regulations, demonstrating Komatsu's commitment to environmental stewardship:
* **Tier 4 Final Compliance:** Meets strict emissions standards for NOx, particulate matter, and hydrocarbons.
* **Diesel Oxidation Catalyst:** Reduces harmful emissions by converting hydrocarbons and carbon monoxide into less harmful substances.
* **Diesel Particulate Filter:** Captures and traps particulate matter, reducing emissions.
Versatility and Applications
The Komatsu 12V140-1 Series Diesel Engine is a versatile power source that finds applications in a wide range of heavy-duty equipment:
* **Excavators:** Provides ample power for digging, trenching, and material handling.
* **Wheel Loaders:** Delivers exceptional torque for loading, hauling, and grading operations.
* **Mining Machinery:** Powers large mining equipment, including haul trucks and excavators.
* **Industrial Generators:** Generates reliable electrical power for remote or backup applications.
The 12V140-1 Series Diesel Engine is the ideal choice for demanding applications where reliability, performance, and fuel efficiency are paramount. Its advanced engineering, robust construction, and environmental compliance make it the preferred choice for heavy-duty equipment manufacturers worldwide.
This service repair workshop manual PDF download has been prepared as an aid to improve the quality of repairs by giving the serviceman an accurate understanding of the Komatsu 12V140-1 Series Diesel Engine and by showing him the correct way to perform repairs and make judgements. Make sure you understand the contents of this manual and use it to full effect at every opportunity.
APPLICABLE MODELS :
SA12V140-1
D475A-2, D475A-3, D475A-5
WA800-2, WA800-3, WA900-1, WA900-3
HD785-3, HD785-5, HD985-3
INGERSOLL RAND
EPSA12V140
EG750B-1L
Generator
DCA800SPK
DCA-800SSK
J12V140E-G1-1
J12V140E-G1-1
SDA12V140E-1
D475A-3
SAA12V140-1
Generator
SAA12V140-P920
SAA12V140-P920
SAA12V140-P1030
SAA12V140-P1150
TABLE OF CONTENTS :
01 GENERAL
11 STRUCTURE AND FUNCTION
12 TESTING AND ADJUSTING
13 DISASSEMBLY AND ASSEMBLY
14 MAINTENANCE STANDARD
15 REPAIR AND REPLACEMENT OF PARTS
MANUAL SPECIFICATION :
File Format : PDF
Language : English
Printable : Yes
Searchable : Yes
Bookmarked : Yes
Product Code : SEBM028316
Total Pages : 469
This shop manual mainly contains the necessary technical information for operations performed in a service workshop. For ease of understanding, the manual is divided into the following chapters; these chapters are further divided into the each main group of components.
STRUCTURE AND FUNCTION
This section explains the structure and function of each component. It serves not only to give an understanding of the structure, but also serves as reference material for troubleshooting. In addition, this section may contain hydraulic circuit diagrams, electric circuit diagrams, and maintenance standards.
TESTING AND ADJUSTING
This section explains checks to be made before and after performing repairs, as well as adjustments to be made at completion of the checks and repairs.
Troubleshooting charts correlating "Problems" with "Causes" are also included in this section.
DISASSEMBLY AND ASSEMBLY
This section explains the procedures for removing, installing, disassembling and assembling each component, as well as precautions for them.
MAINTENANCE STANDARD
This section gives the judgment standards for inspection of disassembled parts.
The contents of this section may be described in STRUCTURE AND FUNCTION.
OTHERS
This section mainly gives hydraulic circuit diagrams and electric circuit diagrams.
In addition, this section may give the specifications of attachments and options together.
This (OEM) Komatsu Shop Manual has detailed illustrations as well as step by step instructions, It is 100 percents complete and intact. they are specifically written for the do-it-yourself-er as well as the experienced mechanic. With step by step instruction & highly detailed exploded pictures & diagrams to show you how to complete the required job correctly & efficiently Using. Provides step-by-step instructions based on the complete dis-assembly of the machine. It is this level of detail, along with hundreds of photos and illustrations, that guide the reader through each service and repair procedure. Complete download comes in pdf format which can work under all PC based windows operating system and Mac also, All pages are printable. Using this repair manual is an inexpensive way to keep your vehicle working properly.
This page sometime can be found use following keyword : service manual, repair manual, workshop manual, technical manual, owner manual, maintenance manual, operating manual, parts manual. Please make sure you read and understand the title of this manual before decided to buy.
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