This collection contains the following 3 manuals:
Komatsu PC50UU-2 shop manual
Komatsu PC50UU-2 operation and maintenance manual
Komatsu 68E-88E series engine service manual

Manual details.

Komatsu PC50UU-2 shop manual. This is the factory shop manual, 828 pages.
serial number 8001 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 costly mistakes. All specifications
and tolerances are listed. Functions of components and
systems are also explained.

Komatsu PC50UU-2 operation and maintenance manual. This is the factory manual, 228 pages.
SERIAL NUMBERS PC50UU-2 -8001 and up
This 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.

Komatsu 68E-88E series engine service manual.
Pages 212
File type PDF
This manual covers following model engines.
2D68E,3D68E,3D74E,3D78AE,3D62AE,3D82E,3D84E,3D88E,4D84E,4D82E,4D88E,S3D84E,S4D84E.

This factory engine service manual has easy-to-read text sections with top quality diagrams, pictures and illustrations. The step by step instructions show you how to 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.