Part of the Hitachi Parts Manuals.
Need the right part number for your Hitachi EX12-2 excavator? This 309-page Hitachi EX12-2 parts catalog PDF (OEM #P1A4-1-2) covers the whole machine, counterweight to bucket cylinder. Every assembly gets an exploded view paired with its numbered parts list: engine mounts, pump device, swing device, travel motors, pilot pipings, cab glass, and the full undercarriage (front idlers, lower rollers, adjusters, track links). You also get an equipment components section that breaks the gear pump, oil motors, control valve sections, and boom, arm, and bucket cylinders down to individual seals and O-rings. Ordering bucket teeth? Four bucket widths from 250 mm to 450 mm are broken out in bolt-type and pin-type versions, plus steel and rubber crawler variants. Stop squinting at blurry photos over the parts counter. Bookmarked with a live text layer; type the part name, jump to the diagram, order once.
Complete the set for your EX12-2
What's Inside This Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Fuel System | Air Cleaner, Fuel Pipings, Fuel Tank | |
| Cooling System | Radiator, Radiator Support, Reserve Tank | |
| Engine | Muffler, Engine Control, Lubricate Pipings, Swing Bearing | |
| Electrical System | Gauge Panel, Wire Harness | |
| PTO | Extra Pipings _PTO_ | |
| Hydraulics & 3-Point Hitch | Pump Device, Boom Swing Cylinder, Blade Cylinder, Boom Cylinder, Arm Cylinder, Bucket Cylinder, Pump;Gear, Valve;Control, Valve;Pilot, Valve;Relief, Valve;Lock | |
| Loader, Backhoe & Attachments | Swing Device, Swing Post, Boom, Boom Support, Bucket 0.022 _Jis94__Bolt Type_, Bucket 0.022 _Jis94__Pin Type_, Bucket 0.035 _Jis94__Bolt Type_, Bucket 0.035 _Jis94__Pin Type_, Bucket 0.04 _Jis94__Bolt Type_, Bucket 0.04 _Jis94__Pin Type_, Bucket 0.044 _Jis94__Bolt Type_, Bucket 0.044 _Jis94__Pin Type_, Attachment Pedal, Cyl.;Boom, Cyl.;Bucket | |
| Body & Operator Station | Oil Tank, Console _Canopy_, Console _Cab_, Canopy, Floor, Seat, Seat Base, Cover, Track Frame, Cab, Cab Ass'Y, Cab Support | |
| Decals & Accessories | Tools | |
| Other Components | Counterweight, Protector, Low Pressure Pipings, Main Pipings, Console, Control Lever, Control Pedal, Lever Link, Pilot Pipings, Pilot Pipings _Jis-Type_, Pilot Pipings _H-Type_, Electric Parts, Bolt Kit, Travel Device, Front Idler, Adjuster |
