748G-III Grapple Skidder Specifications
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| ENGINE: The PowerTech® 8.1 liter engine is engineered and manufactured by John Deere. Replaceable wet-type cylinder liners provide superior heat dissipation. High strength alloy cylinder heads have replaceable valve seat inserts for longer service life. Cast aluminum pistons provide good heat transfer while pistons are sprayed with cooling oil for longer engine life. A high efficiency turbocharger maximizes engine performance. |
| Item |
Measurement |
Specification |
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John Deere PowerTech
®
6081T with Altitude-Compensating, Spark-Arresting Turbocharger
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Rated Power @ 2200 rpm
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Power
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123 kW (165 SAE net hp)
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129 kW (173 SAE gross hp) |
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Displacement
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Volume
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8.1 L (494 cu in.)
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Cylinders
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Quantity
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6
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Fuel Consumption, Typical
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Consumption
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15-21.6 L/hr (4.0-5.7 gph)
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Maximum Net Torque Rise
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Torque
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37% @ 1350 rpm 747 N·m (554 lb-ft)
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Electrical System:
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Standard Alternator
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Amperage
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65-amp
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Optional Alternator
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Amperage
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95-amp
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Optional Alternator
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Amperage
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120-amp
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Battery
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Voltage
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Two 12-volt
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Operating Weight:
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Single Function with Standard Equipment
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Weight
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14 288 kg (31,489 lb) Approximate
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Dual Function with Standard Equipment
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Weight
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14 719 kg (32,450 lb) Approximate
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POWERTECH is a trademark of Deere & Company
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CED,OUO1079,204 -19-14APR00-1/2
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| TRANSMISSION: The eight forward and seven reverse speed direct drive powershift transmission is engineered and manufactured by John Deere specifically for skidders. The transmission charge pump is externally mounted for ease of service. |
| AXLES: John Deere Team Mate II axles, 1400 Series, have heavy-duty inboard mounted planetary type gears that distribute shock loads evenly. Hydraulically applied differential lock in both front and rear axles is standard. |
| BRAKES: Hydraulic annular style wet disk brakes are inboard mounted on both front and rear axles as standard equipment. Completely sealed running in a cooling oil bath, they are self-adjusting, self-equalizing and require no periodic service. A spring applied hydraulically released wet multiple disk parking brake is transmission mounted. It is automatically applied when the engine is off. It can be manually applied by placing the transmission control lever in the park position. |
| STEERING: A load and speed sensing power steering system provides quick response and power for easy maneuvering for woods operations. The 90° (45° each direction) of frame articulation provides exceptional maneuverability. |
| HYDRAULICS: An axial piston pressure compensated pump forms the heart of the quick, responsive and powerful hydraulic system. The closed center hydraulic system is separate from the transmission to enhance overall reliability of both systems. |
| Item |
Measurement |
Specification |
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Steering:
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24.5-32 Tire Size Turning
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Radius
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6.4 m (21.0 ft)
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Hydraulics:
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Hydraulic Pump @ 2200 rpm, 20 684 kPa (3,000 psi)
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Flow Rate
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159 L/min (42 gpm)
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Cable Arch:
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Horizontal Roller
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Diameter
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203 mm (8 in.)
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Vertical Rollers (Through Hardened Steel)
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Diameter
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114 mm (4.5 in.)
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CED,OUO1079,204 -19-14APR00-2/2
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