Komatsu PC490LC-11 Excavator Repair Manual

Shop Manual: 3026 pages
Operation and Maintenance Manual: 504 pages & 488 pages
Serial Numbers:
85416 and up
85701 and up
Manuals: Shop Manual, Operation and Maintenance Manual
00 INDEX AND FOREWORD
01 SPECIFICATIONS
10 STRUCTURE AND FUNCTION
20 STANDARD VALUE TABLE
30 TESTING AND ADJUSTING
40 TROUBLESHOOTING
50 DISASSEMBLY AND ASSEMBLY
60 MAINTENANCE STANDARD
80 APPENDIX
90 CIRCUIT DIAGRAMS
INDEX
Composition of the shop manual
00 INDEX AND FOREWORD
This section describes the index, foreword, safety, and basic information.
01 SPECIFICATIONS
This section describes the specifications of the machine.
10 STRUCTURE AND FUNCTION

This section describes the structure and operation of each component with respect to each system. “STRUCTURE AND FUNCTION” is helpful in not only understanding the structure of each component but performing troubleshooting.

20 STANDARD VALUE TABLE

This section describes the standard values for new machine and failure criteria for testing and adjusting, and troubleshooting. Use the standard values table to check the standard values for testing and adjusting, and judge troubles in troubleshooting.

30 TESTING AND ADJUSTING

This section describes the measuring tools and measuring methods for testing and adjusting as well as the adjusting method of each part. The standard values and repair limit for TESTING AND ADJUSTING are described in “STANDARD VALUE TABLE”.

40 TROUBLESHOOTING
This section describes troubleshooting of failure part and its remedy method on the occurrence of the failure. Descriptions of troubleshooting are sorted by failure mode.
50 DISASSEMBLY AND ASSEMBLY

This section describes the special tools, work procedures, and safety precautions necessary for removal, installation, disassembly, and assembly of the components and parts. In addition, tightening torques, quantity, and weight of the coating materials, lubricants, and coolant necessary to these works are shown.

60 MAINTENANCE STANDARD
This section describes the maintenance standard value of each component. The maintenance standard shows the criteria and remedies for disassembly and assembly.
80 THE OTHER INFORMATION
This section describes the structure and function, testing and adjusting, and troubleshooting for all of the other
components or equipment which cannot be separately classified in the appendix.
90 Circuit diagrams

This section describes hydraulic circuit diagrams and electrical circuit diagrams. Symbols Important safety and quality portions are marked with the following symbols so that shop manual is used effectively.