Part of the Hitachi Parts Manuals.
All 286 pages of this Hitachi EX22 Parts Catalog PDF (OEM #P1AA-1-5) cover one machine: your EX22 compact excavator, from track frame to bucket pin. You get exploded views with numbered callouts for every assembly, so matching a worn bushing or seal to its exact Hitachi part number takes minutes, not phone calls to the dealer. Inside: full breakdowns of the pump device, swing post, control valves, travel device, cab and canopy hardware, plus every hose, clamp, and O-ring in the pilot and main pipings. It even separates the option parts: steel track-link groups (250G, 300G, 400A), rubber crawler, and buckets from 300mm to 550mm wide. Ordering the wrong seal kit twice gets old fast. Bookmarked by section, so you flip straight to the right exploded view on any tablet or phone in the shop.
Complete the set for your EX22
What's Inside This Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Fuel System | Air Cleaner, Fuel Pipings | |
| Cooling System | Radiator, Radiator Support, Reserve Tank, Oil Cooler Pipings | |
| Engine | Muffler, Engine Control, Lubricate Pipings, Engine Cover Guard | |
| Electrical System | Gauge Panel, Electric Parts, Wire Harness, Solenoid Valve | |
| Undercarriage & Travel | Travel Device, Front Idler, Lower Roller, Crawler Guide, Travel Pipings, Travel Pipings Cover, Rubber Crawler | |
| Hydraulics & 3-Point Hitch | Pump Device, Main Pipings, Pilot Pipings, Blade Pipings, Front Pipings, Multi Lever Pipings, Extra Pipings, Gear Pump, Control Valve, Pilot Valve, Boom Cylinder, Bucket Cylinder | |
| Loader, Backhoe & Attachments | Swing Device, Swing Post, Swing Lock, Blade, Boom, Bucket 0.06, Long Blade, Bucket 0.035, Bucket 0.042, Bucket 0.075 | |
| Body & Operator Station | Frame, Tank, Console, Canopy, Floor, Seat, Track Frame, Car Heater, Cab Ass'Y, Cab, Radio | |
| Decals & Accessories | Tool | |
| Other Components | Counterweight, Control Lever, Control Pedal, Lever Lock, Lever Link Support, Lever Link, Adjuster, Track-Link 250G, Center Joint, Std. Arm 1, Multi Lever, Defroster, Track-Link 300G, Track-Link 400A, Long Arm 1, Spare Pedal |


















