Part of the Hitachi Parts Manuals.
Finding the exact replacement numbers is simple with this Hitachi EX20UR parts catalog PDF, a complete 187-page factory breakdown for your excavator (OEM #P1A9-1-1). You get highly detailed exploded diagrams covering everything from the track frame and swing motor to the pilot piping and gear pumps. Open to any assembly and find complete part lists, cross-references, and fastening hardware details to identify your components instantly. Match up your specific attachment hardware, like the teeth and side cutters for the 400mm (0.05 cubic meter) wide bucket, to ensure perfect fitment before calling the dealer. Wrong parts mean expensive downtime. Jump straight to the right assembly using the built-in bookmarks, search by keyword on your phone, and order your spares with total confidence.
What's Inside This Hitachi EX20UR Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Fuel System | Air Cleaner, Fuel Pipings | |
| Cooling System | Radiator, Radiator Support, Reserve Tank | |
| Engine | Muffler, Oil Cooler Pipings, Lubricate Pipings | |
| Electrical System | Gauge Panel _Canopy_, Wire Harness | |
| Hydraulics & 3-Point Hitch | Pump Device, Pump;Gear, Valve;Control, Valve;Pilot, Valve;Relief | |
| Body & Operator Station | Frame, Tank, Canopy, Floor, Seat, Cover, Track Frame, Travel Pipings Cover | |
| Decals & Accessories | Tools | |
| Other Components | Counterweight, Engine, Swing Device, Main Pipings, Control Box, Lever Stand, Engine Control, Control Lever, Control Pedal, Lever Lock, Swing Lock, Lever Link Parts, Lever Link, Pilot Pipings, Electric Parts, Travel Device |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Bucket 0.05 (400mm Wide) | 400mm | p. 133 |
Hitachi EX20UR Common Problems This Manual Covers
Hitachi EX20UR excavator standard bucket teeth are completely worn down and side cutters are missing.
Inspect the bucket assembly exploded view on page 134. Verify your machine uses the 0.05 capacity, 400mm wide bucket before ordering. Locate the correct part numbers for the tooth, side cutter, and boss components. Order the matching bolts, nuts, and shims for installation.
Manual Section: Bucket 0.05 (400Mm Wide) p. 134Bucket cylinder is leaking hydraulic fluid past the rod seal during heavy digging operations.
Check the cylinder parts list on page 183. Identify the correct seal kit, piston, and rod components for your machine. If you are operating the 350mm wide bucket, verify the cylinder head and bushing part numbers match your specific attachment configuration perfectly.
Manual Section: Cyl.;Bucket p. 183Hydraulic hoses on the front boom are leaking fluid from cracked outer jackets.
Check the front pipings exploded view on page 136. Locate the correct replacement hose, adapter, and pipe part numbers. If your machine is equipped with the 300mm wide bucket, verify the clamp and bolt sizes match your specific front attachment configuration before ordering.
Manual Section: Front Pipings (1) p. 136Frequently Asked Questions
What are the replacement specifications for the engine oil filter?
The engine oil filter element for the Hitachi EX20UR is part number 4294841. This part is listed under the engine components section. p. 6
What is the part number for the main hydraulic pump on the EX20UR?
The main gear pump for the EX20UR excavator is part number 4300499. p. 22
What is the part number for the fan belt on the EX20UR engine?
The fan belt for the engine is part number 4294840. p. 6
What is the part number for the fuel filter on the EX20UR?
The fuel filter for the EX20UR is part number 4311000. p. 18
What is the part number for the radiator assembly?
The complete radiator assembly for the EX20UR is part number 4287436. p. 8
How will I receive this Hitachi EX20UR Parts Catalog?
This is a 187-page searchable PDF ready for immediate download. Works on any device, so pull it up on your phone while you're under the hood. No shipping, no waiting.
Can I print this Hitachi EX20UR manual?
Yes, print as many copies as you want, and there are no restrictions. Many mechanics print the section they need and bring it to the shop floor.
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