Komatsu PC100-6, PC120-6, PC120LC-6, PC130-6 Excavator Manual Workshop Guide

Manual Included: Shop Manual: 1036 pages and 846 pages Specifications: Brand: Komatsu Model: PC100-6, PC120-6, PC120LC-6, PC130-6 Serial Number: SEBM010611: PC100-6: 45221 and up PC100L-6: 15200 and up PC120-6: 57499 and up PC120LC-6: 65504 and up PC130-6: 51020 and up SEBM003307: PC100-6: 40001 and up PC120-6: 45001 and up Type: Excavator Manuals: Shop Manual Publication Number: SEBM010611 and SEBM003307 Language: English Format: PDF Description Table of Contents 01 GENERAL ……………………………………………………………………………………………… 01-1 10 STRUCTURE AND FUNCTION ………………………………………………….. 10-1 20 TESTING AND ADJUSTING ………………………………………………………. 20-1 30 DISASSEMBLY AND ASSEMBLY …………………………………………….. 30-1 40 MAINTENANCE STANDARD ……………………………………………………… 40-1 90 OTHERS ………………………………………………………………………………………………… 90-1 GENERAL This section lists the general machine dimensions, performance specifications, component weights, and fuel, coolant and lubricant specification charts. STRUCTURE, FUNCTION AND MAINTENANCE STANDARD 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. 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 mention in this section. DISASSEMBLY AND ASSEMBLY KOMATSU Excavator This section explains the order to be followed when removing, installing, disassembling or assembling each component, as well as precautions to be taken for these operations. 1. Remove lock plate (I), then remove seat (2) and valve (3). 2. Remove yoke piston assembly (5) from recoil spring assembly (4). 3. Disassembly of recoil spring assembly 1) Set recoil spring assembly (4) to tool Dl. a The recoil spring is under large installed load, so be sure to set the tool properly. Failure to do this is dangerous. Sr Installed load of spring : 78.4 kN(8,OOO kg) 2) Apply hydraulic pressure slowly to compress spring, then remove nut (6). * Compress the spring to a point where the nut becomes loose. * Release the hydraulic pressure slowly and release the tension of the spring. Sr Remove pilot (8), cylinder (91, and dust seal (IO) from spring (7). 202FO5465A 4. Disassembly of yoke piston assembly 1) Remove wear ring (12) from yoke piston (I I). 2) Remove snap ring (13), then remove U-packing (14).