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579 Trailer Mount Knuckleboom Loader
The Caterpillar Loader is built using advanced design technology, for the strength and reliability needed to meet the demands of high production delimbing and loading.
Features such as smooth and responsive joystick controls, quiet comfortable operator stations and powerful Cat engines provide the performance you've grown to expect from Caterpillar machines.
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Benefits & Features
Specifications
Standard Equipment
Optional Equipment
Machine Comparison
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Hydraulic Packages
A wide variety of factory installed hydraulic packages increase jobsite performance and versatility.
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Delimber-Slasher Package
The DS package is a complete factory installed timber merchandising system consisting of a knuckleboom loader and grapple, trailer with trailer-mounted delimber and ground saw slasher.
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Operator Station
The ergonomically designed operator station provides greater operator comfort for increased productivity and reduced fatigue.
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Superior Visibility
Designed for maximum visibility, operator comfort and safety.
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| | | Engine | |
| Gross Power | 173 hp |
| | | Operating Specifications | |
| Knuckleboom Length | 32.5 ft |
| | | Weights | |
| Operating Weight | 34000 lb |
| | | Hydraulic System | |
| Cylinders - Live Heel | 152 mm X 102 mm (6 in X 4 in) |
| | | Engine | |
| Engine RPM - Full Load Governed | 2200 RPM |
| | | Hydraulic System | |
| Hydraulic Pressure - Swing | 3500 psi |
| | | Weights | |
| Counterweight | 3070 lb |
| | | Service Refill Capacities | |
| Hydraulic Tank | 65 gal |
| | | Dimensions | |
| Stabilizer Spread at Max Down Reach | 179 in |
| Stabilizer Reach Below Grade | 16.5 in |
| | | Operating Specifications | |
| Swing Bearing Diameter | 54 in |
| | | Engine | |
| Engine Model | Cat® C6.6 ACERT™ |
| | | Operating Specifications | |
| Maximum Reach | 32.6 ft |
| | | Dimensions | |
| Stabilizer Pad Size | 559 mm X 660 mm (22 in X 26 in) |
| | | Hydraulic System | |
| Cylinders - Main | 127 mm X 76.2 mm (5 in X 3 in) |
| Cylinders - Stabilizer | 152 mm X 102 mm (6 in X 4 in) |
| Cylinders - Stick | 152 mm X 102 mm (6 in X 4 in) |
| | | Operating Specifications | |
| Swing Bearing Gearing | External |
| Swing Speed | 9 RPM |
| | | Service Refill Capacities | |
| Fuel Tank | 89 gal |
| | | Hydraulic System | |
| Hydraulic Pressure - System | 3500 psi |
| Hydraulic Flow | 394 L/min (104 gpm) |
| | | Dimensions | |
| Stabilizer Spread at Grade | 195 in |
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Standard Equipment
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| Engines & Drive Line | |
| Cat C6.6 129.8 kW (173 hp) Tier 3 Compliant | |
| 12 V System | |
| 94.0 cm x 127 cm (37” x 50”) left side mounted with isolation pads | |
| Two Variable Displacement Axial Piston Pumps, Pilot Pump | |
| Pilot Joysticks, Electric Stabilizer Controls | |
| Booms | |
| 9.9 m (32’6”) Knuckleboom | |
| Bolt-on Skid Resistant Fenders | |
| Operators Station | |
| Electrical | |
| Circuit Breaker Protection | |
| Tinted Safety Glass Windows, Lexan Skylight, Sun Visor | |
| Axial Piston Swing Motor | |
| Dual Swing Pedals | |
| Grapple Mounting Knuckle, 22.9 cm (9”) Length | |
| Two Wide Tread Ladders | |
| Hydraulic System | |
| Pump Drive, Direct | |
| Master Electrical Disconnect Switch | |
| Fully adjustable Seat with Fold-up armrests | |
| Controls | |
| (3.6 m (12’) Eye Level) Upper Frame | |
| Structural | |
| Electronic Monitoring System | |
| Operator protection Guard | |
| Two Single Element Return Filters | |
| Lower Frame | |
| 2 Cab Mounted Work Lights | |
| Pressurized Cab with Heat/Air Conditioning | |
| Case Drain Filters | |
| Centered Turntable Mounting | |
| Boom Lights | |
| Integral Heat/AC Ductwork | |
| Saw Return Filters | |
| Standard Heavy Duty Installation Kit | |
| Electronic Gauges | |
| Steel Barrel with Durabar Core | |
| Windshield Wiper/Washer | |
| Diagnostic nipples on pumps | |
| Horn | |
| Defroster Fan | |
| Lighter | |
| Dome Light | |
| Fire Extinguisher | |
| Swing Open Door with Sliding Window | |
| Sliding Cab Window | |
| Radio Ready | |
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Optional Equipment
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| AM/FM/CD Radio | |
| 10.2 m (33’6”) Live Heel Boom | |
| Single “V” Heel | |
| Bar Slasher/Hydraulics | |
| 11.0 m (36’) Knuckleboom | |
| Double “VV” Heel | |
| Delimber Hydraulics | |
| Carrier Hydraulics | |
| Circle Saw Hydraulics | |
| Delimber/Carrier/Bar Slasher Hydraulic Pkg | |
| (4.1 m (13’5”) Eye Level) Upper Frame | |
| (4.6 m (15’) Eye Level) Upper Frame | |
| Booms | |
| Heels | |
| Grapple Mounting Knuckle, 30.5 cm (12”) Length (use w/live heel booms) | |
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