Part of the Hitachi Parts Manuals.
Hunting down a part number for your EX55UR-3? This 254-page Hitachi EX55UR-3 Parts Catalog PDF (OEM #P1BH-1-1) covers the whole hydraulic excavator, from frame and counterweight to the offset boom and bucket. You get exploded views with factory part numbers for every assembly: piston pumps, swing device, control valves, travel motors, pilot piping, wire harnesses, and full undercarriage listings for rubber and steel crawlers. Inside are complete cylinder breakdowns (boom, arm, bucket, blade, offset) down to individual seals, packings, and wiper rings, plus air conditioner components (the system takes a 250 g refrigerant charge). Rebuilding a track adjuster? The idler, roller, and adjuster pages show every pin, bushing, and seal group so you order once. No more squinting at a worn casting for a number. Bookmarked by system; jump straight to the right exploded view, order the part, and get back to digging.
What's Inside This Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Fuel System | Air Cleaner, Fuel Tank, Fuel Piping | |
| Cooling System | Radiator | |
| Engine | Engine Std, Engine Air-Con, Engine Support, Muffler, Oil Cooler Piping, Engine Control, Swing Bearing, Pump;Piston Std | |
| Electrical System | Solenoid Valve, Offset Zero Indicator Lamp, Lamp, Wire Harness, Valve;Solenoid | |
| Hydraulics & 3-Point Hitch | Pump Device Std, Pump Device Air-Con, Pump Device Support, Pilot Valve, Blade Cylinder, Boom Cylinder, Arm Cylinder, Bucket Cylinder, Offset Cylinder, Valve;Control, Valve;Pilot | |
| Loader, Backhoe & Attachments | Swing Device, Offset Boom, Boom Support, Bucket 0.22 _Jis94_, Cyl.;Bucket | |
| Body & Operator Station | Frame, Oil Tank, Canopy, Canopy Parts, Cab, Cab Support, Floor, Floor Mat, Seat Base, Seat, Cover, Under Cover, Track Frame | |
| Decals & Accessories | Tools | |
| Other Components | Counterweight, Main Piping, Control Box, Lever Stand, Control Lever, Control Pedal, Link, Gate Lock Lever, Pilot Piping, Pilot Piping _4 Ports_, Collision Prevention Device, Limit Control Monitor, Auto-Marccino, Controller, Electric Parts, Heater |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Gas Capacity (Air-Conditioner) | 250 g | p. 110 |
