Komatsu 830B, 850B, 870B Motor Grader Service Manual
Komatsu Motor Grader 830B, 850B, 870B
Publication: CEBM011200
Format: PDF
Language: English
Komatsu 830B, 850B, 870B Motor Grader Service Manual – 930 Pages
Table of Content of the Komatsu Motor Grader 830B, 850B, 870B Manual:
01 GENERAL .. . . 01-1
10 STRUCTURE AND FUNCTION . . . . 10-1
20 TESTING, ADJUSTING AND TROUBLESHOOTING . . . . 20-1
30 DISASSEMBLY AND ASSEMBLY. . . 30-1
40 MAINTENANCE STANDARD . . . . 40-1
90 OTHER. . . . . 90-1
1. Composition of shop manual
This shop manual contains the necessary technical information for services performed in a workshop. For ease of understanding, the manual is divided into the following sections.
10. Structure and function Komatsu 830B, 850B, 870B Motor Grader.
This section explains the structure and function of each component. It serves not only to give an understanding for the structure of each component, but also serves as reference material for troubleshooting.
30. Testing, adjusting and Troubleshooting
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 to Causes are also included in this section.
50. Disassembly and assembly of Komatsu Motor Grader 830B, 850B, 870B
This section explains the special tools and procedures for removing, installing, disassembling, and assembling each component, as well as precautions for them. In addition, tightening torque, and quantity and weight of coating material, oil, grease, and coolant necessary for the work are also explained.
90. MAINTENANCE STANDARD
This section gives the judgement standards when inspecting disassembled parts.
Motor Grader MODEL:
830B – 203163 and up
850B – 202575 and up
870B – 202599 and up
Komatsu 830B, 850B, 870B Service Manual: Essential Workshop Resource
For maintenance teams working with Komatsu motor graders, having the official service manual for the 830B, 850B, and 870B models is indispensable for proper equipment care .
Content
This comprehensive shop manual spans approximately 930 pages and is organized into five main technical sections . The “Structure and Function” section explains component operation, serving as a reference for troubleshooting. The “Testing, Adjusting and Troubleshooting” section provides diagnostic procedures and problem-cause correlation charts .
The “Disassembly and Assembly” section details removal, installation, and rebuilding procedures, including tightening torques and required material quantities. The “Maintenance Standard” section provides inspection criteria for disassembled parts. A final “General” section covers specifications and safety information .
The manual is designed for serial number ranges: 830B (203163 and up), 850B (202575 and up), and 870B (202599 and up), powered by 6D114E-1 series engines . Each section features exploded-view diagrams, real photo illustrations, and step-by-step instructions .
Conclusion
The Komatsu 830B, 850B, 870B Service Manual is a complete workshop resource that enables technicians to diagnose issues accurately and complete repairs efficiently. With manufacturer-approved procedures, clear illustrations, and comprehensive specifications, this manual protects your equipment investment by minimizing downtime and preventing costly mistakes . For any owner or technician responsible for these motor graders, this manual is an essential tool for maintaining peak machine performance
