This collection contains the following 3 manuals:

Komatsu 140-3 series diesel engine shop manual. This is the factory workshop manual. 359 pages. This file is a high quality PDF with an active ribbon menu. This engine cover the following machines and engine models.
OUTLINE
1. Applicable machine
Engine Engine Serial No. Applicable machine
SA6D140E-3
D155AX-5 Bulldozer
PC600-6 Hydraulic excavator
WA500-3 Wheel loader
DCA400SSK Generator
SAA6D140E-3
HD325-6 Dump truck
HM350-1 Articulated dump truck
HM350-1 (40°C spec.) Articulated dump truck
HM400-1 Articulated dump truck
PC750-6, PC750LC-6, PC750-7 Hydraulic excavator
PC800-6, PC800-7 Hydraulic excavator
PC1800-6 (USA) Hydraulic excavator
SDA6D140E-3
D275A-5 Bulldozer
D275AX-5 Bulldozer

Komatsu PC750-7,PC800-7 shop manual. This is a factory workshop manual. 836 pages. This is a high quality PDF file with active ribbon index.
MACHINE MODEL SERIAL NUMBER
PC750-7 20001 and up
PC750SE-7 20001 and up
PC750LC-7 20001 and up
PC800-7 40001 and up
PC800SE-7 40001 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 and systems
are also explained.

Komatsu PC750-7,PC750LC,PC750SE,PC800,PC800SE-7 operation & maintenance manual. This is the factory manual. 330 pages. High quality PDF file with active ribbon index.
PC750-7-20001 and up
PC750LC-20001 and up
PC750SE-20001 and up
PC800-40001 and up
PC800SE-7-40001 and up
This operation and maintenance manual provides essential information with regard to the operation and maintenance of this machine. It explains the required periodical inspections and maintenance tasks. It contains a troubleshooting guide and electrical wiring diagrams. This manual should always be present with machine.