Hitachi EX100-3 workshop manual.
Pages 593
Section 1 General information (safety etc)
Section 2 Upper structure ((disassembly/assembly hyd pumps/swing/ control valves)
Section 3 Undercarriage (assembly disassembly travel motor/rollers /track adjuster etc)
Section 4 Front attachment (disassembly and assembly hyd cylinders etc)
Section 6 Engine and accessory ( engine disassembly and assembly, specs, inspection )

PLEASE NOTE: This manual does not contain the electrical section.

This manual includes the full specification, tolerances, assembly and disassembly of following Isuzu engines.
4BD1,4BD1T,6BB1,6BD1 and 6BD1T.