Komatsu PC650-3,PC650LC-3,PC650SE-3 workshop manual. This is a factory workshop shop manual.801 pages. This is a high quality PDF with an active ribbon index.
serial number
PC650-3 10501 and up
PC650LC-3 10501 and up
PC650SE-3 10501 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. This is for machine only. It does not cover engine.

Komatsu 6D140-1 series diesel engine shop manual. This is a factory workshop manual.376 pages. This engine is used in following machines.
D135A-2
D155A-3
D155AX-3
WA500-1
PC650-3
PC650-5
PC710-5
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. Function of components and systems are
also explained.