Part of the Hitachi Parts Manuals.
Looking for the exact part numbers for your excavator? This 246-page Hitachi EX20UR-2C Parts Catalog PDF (OEM #P1A2-1-1) maps out the entire machine from the track frame up to the offset boom. You get highly detailed exploded views of the pilot pipings, control valves, hydraulic cylinders, and engine components to make component identification completely foolproof. Inside, page after page of factory parts lists cross-reference every single track shoe, seal kit, and needle bearing directly to its original OEM number. Confirm you are ordering the correct 0.05mm shim for the oil motor assembly before you pull the final drive apart. Do not waste another afternoon trying to explain what a broken bracket looks like to a confused parts guy over the phone. Open this clearly bookmarked PDF on your phone or tablet, find the precise number, and get your equipment back to work.
What's Inside This Hitachi EX20UR-2C Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Fuel System | Air Cleaner, Fuel Pipings | |
| Cooling System | Radiator, Radiator Support, Reserve Tank | |
| Engine | Muffler, Oil Cooler Pipings | |
| Electrical System | Collision Prevention Sensor, Gauge Panel, Wire Harness | |
| Hydraulics & 3-Point Hitch | Pump Device, Collision Prevention Valve, Blade Cylinder, Boom Cylinder, Arm Cylinder, Bucket Cylinder, Offset Cylinder, Pump;Gear, Valve;Control, Valve;Pilot, Valve;Lock | |
| 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, Lever Stand Part, Engine Control, Control Lever, Control Pedal, Lever Lock, Swing Lock, Lever Link Support, Lever Link, Collision Prevention System, Pilot Pipings |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| SHIM 0.05 | 0.05mm | p. 214 |
Hitachi EX20UR-2C Common Problems This Manual Covers
Hitachi EX20UR-2C excavator travel drive leaking gear oil heavily from the planetary housing assembly.
Inspect the exploded view for the travel motor on page 214. Identify the correct 0.05mm shim and oil seal part numbers for your specific serial number. Cross-reference the planetary gear components in the parts list before ordering replacements for the final drive.
Manual Section: Motor;Oil (1_3) p. 214Bucket cylinder leaking hydraulic fluid and struggling to curl a full load of heavy dirt.
Check the bucket cylinder parts breakdown on page 242 to find the correct seal kit. Verify the part numbers for the 300mm wide bucket assembly on page 158 if replacing the entire unit. Order the matching side cutters, teeth, and mounting bosses.
Manual Section: Cyl.;Bucket p. 242Steel tracks sagging excessively and lower rollers grinding loudly during travel across hard terrain.
Examine the lower roller assembly diagram on page 130. Find the exact part numbers for the roller axle, collar, and seal group. Compare your setup with the 400mm wide bucket options on page 162 to confirm you are ordering the correct heavy-duty undercarriage components.
Manual Section: Lower Roller p. 130Slow hydraulic response and weak digging force after several hours of continuous trenching operation.
Inspect the fuel and oil tank parts list on page 20. Locate the correct replacement part numbers for the suction filter and return filter. Review the 0.04 cubic meter bucket components on page 158 to ensure your digging attachments match the hydraulic flow requirements.
Manual Section: Tank (Fuel & Oil) p. 20Frequently Asked Questions
What is the part number for the main hydraulic pump on the EX20UR-2C?
The main gear pump for the EX20UR-2C is identified by part number 4368125. p. 22
What is the replacement part number for the engine oil filter?
The replacement oil filter for the engine is part number 4294838. p. 6
What is the part number for the main frame of the excavator?
The main frame of the excavator is identified by part number 5004910. p. 2
What is the part number for the counterweight on the EX20UR-2C?
The counterweight for the EX20UR-2C is part number 6016133. p. 4
What is the part number for the radiator core?
The radiator core is identified by part number 4383771. p. 8
What do I get after purchasing this Hitachi EX20UR-2C manual?
Instant PDF download. You get the full 246-page scanned Parts Catalog immediately after payment. Open it on your laptop, tablet, or phone right in the shop.
Am I able to print pages from this Hitachi EX20UR-2C 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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