Hitachi EX120-1 Hydraulic Excavator Parts Manual

Hitachi EX120-1 parts manual provides detailed illustrated parts information for the Hitachi EX120-1 hydraulic excavator. This comprehensive 477-page manual is suitable for machine owners, mechanics, parts departments and repair workshops needing accurate component identification for servicing, repairs and replacement-parts ordering.

The Hitachi EX120-1 parts manual contains exploded diagrams, assembly breakdowns, component illustrations and parts references covering the principal systems and structures fitted to the excavator. These detailed illustrations help users identify individual parts, understand how complete assemblies fit together and confirm the correct components before placing an order.

This manual is particularly useful when dismantling major assemblies, identifying worn or missing components, preparing repair estimates or checking which seals, bearings, bushes, washers, clips and fasteners may also be required. The exploded views can also assist during reassembly by showing the correct position and relationship of individual parts.

Information within the manual may include:

• Main frame and upperstructure assemblies
• Operator’s cab and control components
• Covers, guards, doors and access panels
• Counterweight and mounting components
• Boom, arm and bucket assemblies
• Pins, bushes and linkage components
• Undercarriage and track assemblies
• Track chains, shoes and mounting hardware
• Track rollers and carrier rollers
• Front idlers and recoil assemblies
• Drive sprockets and final-drive components
• Travel motor assemblies
• Swing motor and swing-device parts
• Hydraulic pump components
• Main control valve assemblies
• Hydraulic cylinders and seal components
• Pilot-control system parts
• Hydraulic hoses, pipes and fittings
• Engine mounting and related components
• Fuel-system parts
• Cooling-system components
• Air-intake and exhaust components
• Electrical wiring and harnesses
• Starting and charging-system components
• Switches, relays, sensors and instruments
• Filters and routine service items
• Bearings, seals, brackets and fasteners

The exploded diagrams are especially valuable when working on complicated assemblies because they show how individual components fit together. This can help reduce ordering errors and ensure that associated service parts are identified before repair work begins.

The Hitachi EX120-1 parts manual can also help users compare fitted equipment and production variations. Where different specifications or serial-number breaks are shown, the machine identification plate and existing component details should be checked before ordering replacement parts.

This manual is intended primarily for parts identification and ordering. It may show the construction and arrangement of assemblies, but it does not normally include the detailed testing, adjustment and repair procedures found in a workshop service manual.

Manual details:

Manufacturer: Hitachi
Model covered: EX120-1
Machine type: Hydraulic excavator
Manual type: Illustrated parts manual
Number of pages: 477
Format: Digital PDF manual
Language: English

This digital parts manual can be viewed on a computer, laptop, tablet or suitable mobile device. Individual diagrams and parts pages may also be printed for workshop, stores or parts-counter use.

After purchase, an instruction PDF is available through the order download. The complete Hitachi EX120-1 parts manual will then be supplied digitally using a secure Filemail download link.

Please check that your excavator model matches the Hitachi EX120-1 and compare serial or identification details where necessary before ordering replacement parts.