Part of the Hitachi Parts Manuals.
Hunting down part numbers again? This 313-page Hitachi EX55UR parts manual PDF (OEM #P1BG-1-2) covers the complete hydraulic excavator, from main frame and counterweight through the piston pump, swing device, travel devices, and full cab group. You get exploded views matched to factory part numbers for every assembly: control valves, pilot pipings, wire harnesses, cylinders, and offset boom components. Each drawing sits beside its numbered parts list, so you match the diagram to the exact reference before you ever call the dealer. Ordering a bucket? This parts catalog separates the 0.11, 0.17, and 0.22 JIS94 buckets, with or without side cutters, plus the 1.7M standard and 2.07M long arms. No more wrong parts sitting on your bench. Bookmarked and text-searchable; type the component name, jump straight to the section, and order right the first time.
What's Inside This Hitachi EX55UR Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Fuel System | Air Cleaner, Fuel Pipings, Fuel Tank | |
| Cooling System | Radiator, Radiator Support, Reserve Tank | |
| Engine | Muffler, Oil Cooler Pipings, Engine Control, Pump;Piston | |
| Electrical System | Gauge Panel, Wire Harness, Valve;Solenoid | |
| PTO | PTO Pipings _Offset Boom_, PTO Pipings _Mono Boom_ | |
| Hydraulics & 3-Point Hitch | Pump Device, Control Valve Assy, 01..Valve;Relief, Valve;Control, Valve;Pilot, Valve;Fc | |
| Loader, Backhoe & Attachments | Swing Device, Offset Boom, Std. Arm 1.7M _Offset Boom_, Long Arm 2.07M _Offset Boom_, Long Arm Support _Offset Boom_, Bucket 0.11 _Jis94_, Bucket 0.17 _Jis94_, Bucket 0.22 _Jis94_, Upperstructure Support _Mono Boom_, Electric Parts _Mono Boom_, Mono Boom, Std. Arm 1.7M _Mono Boom_, Front Pipings _Mono Boom_, Attachment Pedal, Extra Pipings _Mono Boom_, Cyl.;Bucket | |
| Body & Operator Station | Frame, Oil Tank, Canopy, Console Box _Canopy_, Floor Mat, Floor, Seat, Cover, Track Frame, Cab Group, Cab Ass'Y, Cab, Consol Box _Cab_ | |
| Decals & Accessories | Tools | |
| Other Components | Counterweight, Main Pipings, Control Box, Levea Stand, Control Lever Support, Control Lever, Lever Link, Control Pedal, Gate Lock Lever, Collision Prevention Device, Pilot Pipings, Electric Parts, Electoric Parts, Support, Travel Device, Front Idler |
Hitachi EX55UR Common Problems This Manual Covers
Hitachi EX55UR boom cylinder seal kit part numbers unclear, rod side seeping oil after packing wear
Check the cylinder breakdowns starting on page 305; the bucket cylinder is on page 309 and the offset cylinder on page 311. Match the tube, rod, piston, and packing line items to your cylinder before ordering. For arm cylinder seals on offset boom machines, verify first whether you have the 1.7 m standard arm or the 2.07 m long arm.
Manual Section: Cylinder Repair (Boom, Arm, Bucket, Offset, Blade) p. 305Bucket teeth and side cutters worn out, not sure which bucket capacity is fitted
Identify the bucket capacity before ordering: 0.11 m3 buckets are listed on pages 184 and 186, 0.17 m3 on pages 188 and 190, and 0.22 m3 on pages 192 and 194. Order point teeth, pin locks, and rubber locks from the matching exploded view; side cutter versions carry separate boss and shim part numbers.
Manual Section: Bucket 0.17 _Jis94_ (with Side Cutter) p. 188Arm pins, bushings, and link parts differ between standard and long arm versions
Measure the arm before ordering pins or bushings: the 1.7 m standard arm parts list is on page 178, the 2.07 m long arm on page 180, and its link and support pins on page 182. Verify pin, spacer, and shim numbers against your serial number range, since the two arms do not interchange.
Manual Section: Std. Arm 1.7M _Offset Boom_ p. 178Track adjuster and track link part numbers mixed up between rubber and steel crawler machines
Check which undercarriage you have first. Rubber crawler adjuster parts are on page 154 and the shoe assembly on page 162; steel crawler machines use the adjuster on page 156 and the 400 mm (400G) track link assembly on page 164, which lists links, pins, bushings, and grouser shoes separately.
Manual Section: Track-Link 400G (Steel Crawler) p. 164Frequently Asked Questions
What is the part number for the main frame of the excavator?
The main frame of the EX55UR excavator is identified by part number 5004081. p. 3
What is the part number for the fan belt on the engine?
The fan belt for the engine is part number 4340200, and it is noted that 1 unit equals 2 pieces. p. 9
What is the part number for the engine oil filter?
The oil filter for the engine is part number 4278859. p. 9
What is the part number for the fuel filter?
The fuel filter for the EX55UR excavator is part number 4339926. p. 21
What is the part number for the air cleaner element?
The air cleaner element for the air cleaner assembly is part number 4294846. p. 17
How will I receive this Hitachi EX55UR Parts Manual?
Instant PDF download. You get the full 313-page searchable Parts Manual immediately after payment. Open it on your laptop, tablet, or phone right in the shop.
Can I print specific sections of this Hitachi EX55UR Parts 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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