Hitachi EX75UR-3 Excavator Parts Catalog (P/N P1OV-1-2)

The Hitachi EX75UR-3 Parts Catalog, P/N P1OV-1-2, is a 612-page PDF for machines in the 010001-and-up serial series. It is suited to technicians, parts departments, and experienced owners who can match the machine PIN, attachment build, regional specification, and serial break before ordering; it assumes familiarity with exploded parts drawings and is not a repair instruction manual.

• Maps upperstructure assemblies from the main frame, counterweight, engine support, radiator, air cleaner, muffler, fuel tank, and oil tank through the pump device, swing device, control valve, and their mounting parts.
• Breaks hydraulic hardware into suction, delivery, return, drain, main, travel, front, lubricating, and pilot piping, with separate layouts for the applicable boom, arm, and blade configurations.
• Details operator controls and electrical parts such as engine-control components, travel and blade levers, offset and slide pedals, pilot valves, controller, monitor, cab and light harnesses, regional horns, heaters, selectable air conditioning, and the collision-prevention-system link.
• Covers undercarriage parts for STD and PAT blade track frames, travel devices, front idlers, crawler adjusters, upper and lower rollers, center joints, travel piping, rubber crawlers, steel track links, pads, and blade piping.
• Separates offset-boom hardware for standard, long, and slide arms from the mono-boom assemblies, then identifies the related buckets, cylinders, links, sensors, guards, front piping, breaker/crusher piping, and multi-lever equipment.
• Provides exploded assembly views plus matrices for item number, Hitachi part number, part name, quantity, service code, serial applicability, interchangeability, and replacement-part quantity, backed by a numerical parts index.

Configuration and Serial Matching

The catalog distinguishes [STD] standard-specification machines from [EU] European Union-specification machines; an unmarked listing applies to both. It also treats serial applicability at the group and individual-part levels. Notable breaks include the split between 010001-010440 and 010441-and-up pilot-piping groups, certain PAT-blade groups beginning at 011737, and EU groups beginning at 012530. Later nameplate sections further separate offset-boom and mono-boom builds, English and Japanese labels, and HCME/FHE EU versions.

For correct identification, the catalog explains that the applicable machine serial is the number following the letter P in the PIN. It also uses H-prefixed component manufacturing numbers and F-prefixed front-attachment numbers where machine serial alone is not enough. Date-coded changes remain visible alongside old and new part numbers, helping prevent a visually similar component from being ordered for the wrong build.

Parts Selection and Repair Planning

The most useful visual references include the pump-device and control-valve layouts, the multi-stage pilot-piping views, travel-device and crawler-adjuster assemblies, offset/slide/mono-boom attachment drawings, breaker-and-crusher piping layouts, and cab/light-harness pages. These are exploded parts views and routing layouts, not hydraulic circuit schematics or electrical wiring diagrams.

During repair planning, do not treat every listed component as a drop-in replacement. A W-coded item requires work before installation, an H-coded precision part is directed to authorized repair, and an R-coded quantity can vary for items such as adjusting shims; ignoring those codes can damage the replacement or its mating assembly. The I/P/T/Y interchangeability codes are also directional: some improved parts replace the original only one way, while T-coded replacements must be installed as an assembly, so mixing old and new components can leave an incompatible repair.

Catalog Scope

This publication is for component identification and parts ordering. It does not provide removal and installation sequences, overhaul instructions, troubleshooting charts, hydraulic pressure tests, torque tables, fluid capacities, wear limits, calibration data, or electrical test values. Internal engine parts are also outside its scope; the foreword directs users to the separately issued Nissan BD30 diesel-engine parts catalog.

Use the correct service information and safe lifting, attachment-support, and hydraulic-pressure-isolation practices before physical repair work. This catalog shows which parts belong in each covered assembly, but it does not supply the procedures needed to perform the work safely.