Komatsu PC55MR-3 and PC45MR-3 shop manual.
Model and serial number range.
PC55MR-3 15001 and up.
PC45MR-3 5001 and up.
This is a high quality factory PDF.
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.