This collection contains the following 2 manuals: These are factory manuals. They are quality PDF files with active ribbon index.

Komatsu PC400-7,PC450-7,PC400LC-7 shop manual.
This is the factory shop manual.
782 pages.
Model and serial number range
PC400-7 50001 and up
PC400LC-7 50001 and up
PC450-7 20001 and up
PC450LC-7 20001 and up
This factory service manual has easy-to-read text sections with top quality diagrams, pictures and illustrations. The step by step instructions show you how to fault find or complete any repair or overhaul, correctly and efficiently, saving time and avoiding cockups. All specifications
and tolerances are listed. Functions of components are also explained.

Komatsu https://www.tradebit.com400LC-7,pc450-7 operation & maintenance manual. This is the factory manual. 309 pages. This is a quality PDF with an active ribbon index.
SERIAL NUMBERS PC400-7 50001 and up
PC400LC-7 50001 and up
PC450-7 20001 and up
PC450LC-7 20001 and up
Operation and maintenance manual provides essential information with regard to the operation and maintenance of this machine. Careful handling, correct periodical inspections and maintenance. This manual should always be present with machine.