SEBM014508 1 MACHINE MODEL SERIAL NUMBER PC400-6 32001 and up PC400LC-6 32001 and up PC450-6 12001 and up PC450LC-6 12001 and up This shop manual may contain attachments and optional equipment that are not available in your area. Please consult your local Komatsu distributor for those items you may require. Materials and specifications are subject to change without notice. PC400, 450-6 mount the SA6D125-2 engine. For details of the engine, see the 125-2 Series Engine Shop Manual. © 2004 1 All Rights Reserved Printed in Japan 09-04(01) 00-1 (8)