2002-2007 Hyundai R290LC-7 / 290LC-7 Crawler Excavator Service Manual (P/N C4077-90960)
Hyundai Models Covered & Key Technical Specifications
Models: Hyundai R290LC-7 Crawler Excavator
Model Years: 2002–2007
Technical Data:
- Engine: Cummins C8.3-C 4-cycle turbocharged diesel
- Rated power: 195 Hp at 1900 rpm
- Piston displacement: 8270 cc (505 cu in)
- Max torque: 62.1 kgf·m (449 lbf·ft) at 1600 rpm
- Operating weight: 28900 kg (63710 lb)
- Bucket capacity: 1.27 m³ (1.66 yd³)
- Travel speed: 3.0/5.0 km/hr (1.9/3.1 mph)
- Hydraulic system type: Variable displacement tandem axis piston pumps
- Main pump capacity: 2 × 136.8 cc/rev
- Main relief valve pressure: 330 kgf/cm² (4690 psi) [360 kgf/cm² (5120 psi) with power boost]
Hyundai Manual Features & Content Preview
This 651-page OEM service publication provides comprehensive system documentation for 2002–2007 Hyundai R290LC-7 crawler excavators. Serving as an authoritative reference, it details the Cummins C8.3-C engine, hydraulic pump configurations, and mechatronic logic essential for professional maintenance. Proper review of these factory specifications ensures safe machine handling and helps prevent accidental pressure releases or component damage during routine workshop procedures.
- Official Hyundai factory manual (P/N C4077-90960) featuring original OEM content for structural and functional diagnostics.
- Documents engine, hydraulic, electrical, and mechatronic systems specific to the -7 series build.
- Contains 56 individual section diagrams, complete hydraulic circuit schematics, electrical connector charts, and component mounting torque tables.
Component Structure and Function
The documentation offers an in-depth breakdown of the machine's core systems. It details the exact operational mechanics of the main pump, regulator, and gear pump within the R290LC-7. Readers will find thorough explorations of the interplay between the rotary group, swash plate assembly, and valve block. Hydraulic system coverage encompasses negative flow control, total horsepower regulation, and power shift functions. Individual chapters also map out specific spool operations for boom, arm, bucket, and swing movements, including vital regeneration functions for the arm circuit.
Specification and Technical Data Preview
Technical specifications are categorized by functional group to provide quick, reliable reference points for daily workshop inspections. The engine section lists a rated power of 195 hp at 1,900 rpm, a cylinder bore of 114 mm, and a compression ratio of 17.3:1. Main pump delivery runs at 2 × 260 L/min. The hydraulic tank system capacity is specified at exactly 380 liters. Critical bolt torque values for the undercarriage and work equipment are documented throughout the text. Additionally, you will find precise fluid capacity requirements for both the cooling system and engine oil, alongside conversion tables for metric and imperial measurements.
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