Hyundai R55-9 Mini Excavator service manual
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About the Hyundai Construction Equipment Mini Excavators
Hyundai factory service manuals for mini excavators under 10 tonnes: 58 models from the R15-7 to the HX85A and HX90A.
Hyundai R55-9 Mini Excavator - Factory Service Manual
This is Hyundai's factory service manual for the R55-9 mini excavator, as a PDF. It runs to 466 pages in 8 sections: the same workshop manual Hyundai dealers use.
It covers the Hyundai R55-9 mini excavator.
The R55-9 at a glance
These figures are taken from the specifications section of this manual.
| Engine | Yanmar 4TNV98-EPHYBU |
| Operating weight | 5,650 kg (12,460 lb) |
| Bucket capacity | 0.18 m³ (0.24 yd³) heaped |
| Max. digging depth | 3.82 m (12' 6") |
About the Hyundai R55-9 mini excavator
A mini excavator is a full hydraulic machine in a small frame, so diagnosing it means reading pressures and flows rather than guessing. The manual gives the hydraulic circuit, the pressure settings and the procedures for the pump, valves and motors.
What is inside, section by section
Its chapters cover the engine, the hydraulic system, the electrical system, the undercarriage, swing and travel, the work equipment, specifications, troubleshooting and fault codes and maintenance.
- General (21 pages) - safety hints, specifications.
- Structure and function (72 pages) - pump device, main control valve, swing device, travel device, RCV lever.
- Hydraulic system (36 pages) - hydraulic circuit, main circuit, pilot circuit, single operation, combined operation.
- Electrical system (56 pages) - component location, monitoring system, electrical circuit, electrical component specification, connectors.
- Troubleshooting (39 pages) - before troubleshooting, hydraulic and mechanical system, electrical system.
- Maintenance standard (39 pages) - operational performance test, major components, track and work equipment.
- Disassembly and assembly (192 pages) - precaution, tightening torque, pump device, main control valve, swing device, travel device, RCV lever, turning joint, boom, arm and bucket cylinder, undercarriage, work equipment.
- Component mounting torque (11 pages) - introduction guide, engine system, electric system, hydraulic system, undercarriage, structure, work equipment.
What you can do with it
- Find the cause of a fault before replacing parts
- Remove, overhaul and refit major components
- Set pressures, clearances and adjustments to the factory values
- Use the right torque values and tightening sequences
- Read the wiring and hydraulic diagrams when tracing a problem
Who uses it
Owners, contractors and rental shops that keep the R55-9 running: tracing a hydraulic or electrical fault, checking wear against Hyundai's limits, or rebuilding a cylinder, swing or travel motor.
Make sure it is your model
This manual is for the R55-9. The R55-3, R55-7, R55-7A and R55-9A have a separate manual. Check the model plate on your machine before ordering.
Questions about this manual
Which machines does this manual cover?
The Hyundai R55-9. If your machine has a different model number, look for the manual for that model.
Is it the original manufacturer manual?
Yes. It is Hyundai's own service manual, not a third-party reprint or a summary.
How many pages does it have?
466 pages, in 8 parts listed above.
How do I receive it?
It is a PDF. After payment it is available to download from your account, and you can read it on a computer, tablet or phone or print the pages you need. No printed book is shipped.
