Part of the Hitachi Parts Manuals.
Tracking down parts for a Hitachi EX22-2? This 329-page Hitachi EX22-2 parts catalog PDF (OEM #P1AL-1-2) maps every assembly on the mini excavator, from track frame to boom cylinder. You get exploded views paired with factory part numbers for the piston pump, swing device, control valves, pilot pipings, and the full cab and canopy groups. Inside: parts lists for buckets in 300, 350, 460, and 550 mm widths, plus the Track-Link 250G undercarriage with links, pins, and bushings called out piece by piece. Match the exploded view to the part on your bench, read off the Hitachi number, and order once. No more squinting at a worn casting while the dealer counter guesses. Bookmarked by section, this PDF opens on any laptop, tablet, or phone; carry it straight to the machine and point at the exact part you need.
What's Inside This Hitachi EX22-2 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, Engine Control Cable, Lubricate Pipings, Swing Bearing, Pump;Piston | |
| Electrical System | Gauge Panel, Electric Parts, Wire Harness, Valve;Solenoid | |
| Undercarriage & Travel | Travel Device, Front Idler, Lower Roller, Rubber Crawler, Crawler Guide, Travel Pipings | |
| PTO | Extra Pipings _PTO_ | |
| Hydraulics & 3-Point Hitch | Pump Device, Boom Swing Cylinder, Main Pipings, Pilot Pipings, Pilot Pipings _Jis-Type_, Pilot Pipings _H-Type_, Blade Cylinder, Blade Pipings, Boom Cylinder, Arm Cylinder, Bucket Cylinder, Front Pipings, 012 Way Multi Lever Pipings, 014 Way Multi Lever Pipings, Extra Pipings _Breaker & Crusher, Extra Pipings _Std | |
| Loader, Backhoe & Attachments | Swing Device, Swing Post, Long Blade, Short Blade, Blade Support, Boom, Boom Support, Bucket 0.04 _Jis94_, Bucket 0.045 _Jis94_, Bucket 0.066 _Jis94_, Bucket 0.085 _Jis94_, Cyl.;Boom, Cyl.;Bucket | |
| Body & Operator Station | Frame, Tank, Console _Canopy_, Console _Cab_, Console, Canopy, Floor, Seat, Seat Base, Track Frame, Cab, Cab Parts, Cab Ass'Y, Window Washer, Heater, Seat Belt | |
| Decals & Accessories | Tools | |
| Other Components | Counterweight, Protector, Control Lever, Control Pedal, Lever Link Support, Lever Link, Bolt Kit, Adjuster, Track-Link 250G, Center Joint, Std.Arm 1, Long Arm 1, Std.Arm Support, Long Arm Support, 012 Way Multi Lever, 014 Way Multi Lever |
Hitachi EX22-2 Common Problems This Manual Covers
Hitachi EX22-2 bucket tooth points worn down, not sure which tooth point fits the 300mm bucket
Match your bucket width first: the parts lists cover the 300 mm (0.04 m3), 350 mm (0.045 m3), 460 mm (0.066 m3), and 550 mm (0.085 m3) buckets. Check the 300 mm bucket list on page 200 for tooth point, boss, bolt, washer, and nut numbers, then confirm the fit against your serial number range before ordering.
Manual Section: Bucket 0.04 _Jis94_ (300Mm Wide) p. 200Boom cylinder weeping at the rod, need the correct seal kit part number
Verify whether your machine is canopy or cab spec before ordering; the boom cylinders are listed separately. Check the canopy version exploded view on page 318 and the cab version on page 320, both showing tube, rod, cylinder head, piston, and seal kit line items. Measure the rod diameter in mm and quote it with your serial number.
Manual Section: Cyl.;Boom (Canopy) p. 318Pilot filter element looks clogged and can't identify the replacement element or O-ring numbers
Check the Pilot Pipings (1-1) parts list on page 90; it breaks out the filter housing, element, O-ring, spacer, bolt, and washer as separate items. Order the element and O-ring together, since the old O-ring rarely survives removal. Measure the old element's length and outside diameter in mm to confirm a match before installing.
Manual Section: Pilot Pipings (1-1) p. 90Track keeps loosening, adjuster parts needed but rubber and steel crawler versions look identical
Identify your crawler type before ordering: the rubber crawler adjuster is listed on page 162 and the steel crawler version on page 164. Both show cylinder assembly, spring, washer, nut, plug, wear ring, and U-ring. Measure the spring's free length in mm against a new one; a collapsed spring means buying the complete cylinder assembly.
Manual Section: Adjuster (Rubber Crawler) p. 162Main hydraulic pump leaking at the shaft, unsure whether seal kit or full pump is listed
Check the piston pump exploded view on page 290; it lists the piston, valve plate, swash plate, cylinder block, shaft, and seal kit as separate line items, so a shaft leak usually needs only the seal kit. Cross-reference the Pump Device list on page 24 for the coupling, pump cover, and oil seal, and measure the old seal bore in mm before ordering.
Manual Section: Pump;Piston p. 290Frequently Asked Questions
What is the replacement part number for the air cleaner element?
The replacement air cleaner element for the EX22-2 excavator is part number 4357443. p. 16
What is the replacement part number for the engine fan belt?
The replacement fan belt for the engine is part number 4352388. p. 8
What is the replacement part number for the radiator cap?
The replacement radiator cap is part number 4407714. p. 10
What is the replacement part number for the engine fuel filter?
The replacement fuel filter for the engine is part number 4346779. p. 20
What is the replacement part number for the engine stop solenoid?
The replacement stop solenoid for the engine is part number 4331941. p. 128
Is this Hitachi EX22-2 Parts Catalog a digital download?
Instant PDF download. You get the full 329-page scanned Parts Catalog immediately after payment. Open it on your laptop, tablet, or phone right in the shop.
Can I print just the pages I need from this manual?
Absolutely. No DRM or copy protection. Print the whole manual or just the pages you need. Any home or office printer works.
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