Komatsu PC270LC-6LE Excavator Service Manual Workshop Guide

Manual Included: Shop Manual: 731 pages Specifications: Brand: Komatsu Model: PC270LC-6LE Serial Number: A83001 and up Type: Excavator Manuals: Shop Manual Publication Number: CEBD003001 Language: English Format: PDF Description Table of Contents 10. STRUCTURE AND FUNCTION……………………………………………………………………. 10-1 20. TESTING AND ADJUSTING ……………………………………………………………………….. 20-1 30. DISASSEMBLY AND ASSEMBLY ………………………………………………………………. 30-1 90. OTHER………………………………………………………………………………………………………. 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. Function When traveling, the pump control is carried out, and the travel speed can be selected manually or automatically to give a travel performance that suits the nature of the work or the job site. Pump control function when traveling If the travel is operated in any working mode other than the heavy-duty operation (H/O) mode, the pump absorption torque increases with the working mode and engine speed kept unchanged. For details, see Pump and engine mutual control system. Travel speed selection function Manual selection using the travel speed switch. If the travel speed switch is set to Lo, Mi, or Hi, the pump controller controls the pump flow and motor volume at each speed range to switch the travel speed