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Part of the Hitachi Parts Manuals.
This 234-page Hitachi EX30UR-3 parts catalog PDF (OEM #P1BR-1-1) maps every component on your EX30UR-3 hydraulic excavator, from the piston pump to the offset boom pins. You get exploded views with factory part numbers across the whole machine: engine, radiator, pump device, swing device, pilot and solenoid valves, plus full undercarriage coverage of front idlers, rollers, track links, and both rubber and steel crawler adjusters. A separate equipment components section strips the oil motors and every cylinder down to individual pistons, bushings, seals, and packings. Need proof it's the real factory book? It breaks out the Track-Link 300G assembly and the 0.08 cubic meter JIS94 bucket (450 mm wide) piece by piece. One wrong part number costs you a week of freight. Bookmarked and searchable; find the diagram, read the number, order it right the first time.
What's Inside This Hitachi EX30UR-3 Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Fuel System | Air Cleaner, Fuel Piping, Fuel Tank | |
| Cooling System | Radiator, Radiator Support | |
| Engine | Muffler, Oil Cooler Piping, Engine Control, Swing Bearing | |
| Electrical System | Solenoid Valve, Offset Lamp, Canopy Lamp, Valve;Solenoid | |
| Hydraulics & 3-Point Hitch | Pump Device, Pump Device Support, Pilot Valve, Cylinder Stay, Valve;Pilot | |
| Loader, Backhoe & Attachments | Swing Device, Offset Boom, Offset Boom Parts, Bucket 0.08 _Jis94_, Boom Cyl, Bucket Cyl, Front Piping_Offset Boom_, Cyl.;Bucket | |
| Body & Operator Station | Frame, Oil Tank, Canopy, Canopy Parts, Canopy Support, Floor, Floor Mat, Seat Base _Without Heater_, Seat Base _with Heater_, Seat, Cover, Track Frame | |
| Decals & Accessories | Tools | |
| Other Components | Counterweight, Main Piping, Control Box, Lever Stand, Control Pedal, Offset Pedal, Gate Lock Lever _Without Heater_, Lever Link, Pilot Piping, Pilot Piping_H-Type_, Collision Prevention System, Limit Control Monitor, Controller, Battary, Electric Parts, Rear Shield |
Hitachi EX30UR-3 Common Problems This Manual Covers
Hitachi EX30UR-3 bucket teeth worn down, need point and side cutter part numbers
Check the bucket exploded view on page 178 for the 0.08 cubic meter JIS94 bucket, 450 mm wide. Points, side cutters, adapters, lock pins, and bosses are all itemized there. Count your tooth positions against the diagram, confirm the pin and lock style matches your bucket, then order points and locks as complete sets.
Manual Section: Bucket 0.08 _Jis94_(450Mm Wide) p. 178Boom cylinder weeping at the rod, can't identify the correct seal and bushing parts
Check the Boom Cyl exploded view on page 180. It itemizes the tube, rod, piston, rod bushing, and dust seal. For the internal packing breakdown covering head, bushing, packing, ring, and stopper, turn to the cylinder listing on page 228. Match every item number against your serial number range, and order the dust seal and rod bushing together since they wear as a pair.
Manual Section: Boom Cyl p. 180Track keeps loosening, not sure which adjuster assembly fits rubber versus steel crawlers
Verify which crawler type you have first; the assemblies are not interchangeable. Rubber crawler machines use the adjuster listing on page 140, steel crawler machines use page 142. Both break out the cylinder assembly, rod, spring, washer, nut, and plug. The rubber crawler version adds a wear ring, so include it in the order if your shoes are rubber.
Manual Section: Adjuster (Rubber Crawler) p. 140Pilot valve spool sticking, need the casing and spring part numbers for a rebuild
Check the pilot valve breakdown on page 58: casing, spool, pusher, spring, joint, cam, and plug are itemized individually. If your unit is the 3-port solenoid type, use the solenoid valve listing on page 60 instead, which covers the shim, spool, plunger, cover, and body. Trace the pilot piping diagrams starting on page 62 to confirm which valve you are actually holding.
Manual Section: Pilot Valve p. 58Hydraulic oil leaking between the upper structure and undercarriage, need center joint seals
Check the center joint exploded view on page 152. The leak path runs through the oil seal, backup ring, and dust seal, each listed as a separate item alongside the thrust washer, body, cover, and shaft assembly. Order the entire seal stack in one pass; pulling the shaft a second time costs far more than the extra seals.
Manual Section: Center Joint p. 152Frequently Asked Questions
What is the torque specification for the main frame bolts on the Hitachi EX30UR-3?
The main frame bolts (part number J981255) are used in a quantity of 22. While the manual provides the part number and quantity on page 2, it does not specify a torque value for these bolts. p. 2
What is the capacity of the fuel tank on the Hitachi EX30UR-3?
The manual lists the fuel tank (part number 4402400) as having a quantity of 1, but it does not provide the specific fuel capacity in liters or gallons. p. 18
What is the part number for the engine fan belt on the EX30UR-3?
The part number for the fan belt (BELT;FAN) is 4352387. This part is listed under the engine components section. p. 6
What is the part number for the main hydraulic oil filter element?
The main return oil filter element (part number 4402807) is located within the return filter assembly (part number 4402399) on the oil tank. p. 20
What is the part number for the engine oil filter?
The engine oil filter part number is 4294838. It is listed as a component of the engine assembly. p. 6
Is this Hitachi EX30UR-3 Parts Catalog a digital download?
A 234-page Parts Catalog in searchable PDF format, available the moment you complete checkout. View on computer, tablet, or phone, with no shipping wait.
Am I able to print pages from this Hitachi EX30UR-3 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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