Caterpillar Performance Handbook, January 2017, SEBD0351-47

Introduction Features

Wood Extraction Track Skidders

● Auto-grab feature — provides constant grapple tong pressure without continuous hydraulic pump demand. ● Superior component durability — Final drives are raised above the work area, isolating the power train from ground impact shock and abrasive materials. ● Excellent ground clearance — no diagonal braces allow the skidder to pass over stumps and debris, reduces maneuvering for reduced cycle times and minimizes soil impact. ● Smooth belly pans — Less likely to hang up in mud and debris in soft ground or swamp logging applications. ● Easy and comfortable operating environment — The seat is angled and controls are easily reached to reduce operator fatigue and increase productivity. Optional enclosed ROPS/FOPS cab allows excellent front and rear viewing, and is pressurized for sound level reduction. ● Single lever grapple control and blade control. ● Less service time — Major components are made as modules and most can be removed without removing others, and ground-level access provides convenient servicing to most filters and lube points. ● Cable and Swing Boom configurations provide the versatility needed to match the skidder to a wide vari- ety of skidding applications.

Introduction The Cat 527 Skidder is designed and built specifically for log skidding applications. The 527’s extended track roller frame and weight-forward bias make it well suited for mountainous and soft underfoot logging opera- tions. The skidder’s ergonomic and spacious operator’s environment allow for increased comfort and produc- tion. The 527’s standard forestry guarding and under- carriage design ensure the durability required in logging applications. Both Cable and Swing-boom Grapple con- figurations are provided to suit a wide range of skidding applications. Features 527: ● Field proven Cat 3304 diesel engine sets the industry standard for reliability and durability, delivering high horsepower for more drawbar pull, improved skid- ding performance and ease of operation. ● Large, heavy duty torque converter , reduces the ten- dency for track-to-ground slip, reduces the need for up and downshifting and protects power train com- ponents contributing to longer component life. ● 3 speed planetary powershift transmission works best in high-pull applications and is well suited for large load and steep terrain skidding. ● Heavy-duty track roller frame extended to the rear sig- nificantly improves traction capability under heavy loads and uphill skidding applications. ● Wide gauge and long track roller frames provide out- standing sidehill stability. ● Improved flotation — More track on the ground dis- tributes tractor weight and propulsion forces over a much larger area than conventional track skidders. This improves flotation capabilities, gradeability and significantly reduces soil impact. ● Load sensing hydraulic system — Variable displace- ment pressure compensating hydraulic system provides reduced power requirements when there is not hydrau- lic demand, significantly reduced heat generation, and improving fuel efficiency.

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Edition 47 5-45