Case CE says new crawler dozer offers big performance, not weight

  • 16-Dec-2009 03:38 EST
Case 650L-Photo SAE.jpg

Case Construction Equipment's 650L crawler dozer is primarily suited for residential job sites and confined commercial areas.

Case Construction Equipment says its new 650L crawler dozer for residential job sites and confined commercial work areas retains the features of the Case crawler dozer line, such as hydrostatic drive, the operator compartment, and two undercarriage options.

The 650L delivers 74 net hp (55 kW) through a four-cylinder, 4.5-L turbocharged Case Family IV engine with electronic fuel injection for maximum fuel efficiency and easier starts in cold weather. The Tier 3-certified engine is equipped with a high-pressure common-rail injection system and a charge air cooler that Case says reduces emissions and provides a cleaner, more efficient fuel burn.

A low operating height allows the 650L to work around low overhangs, while its lighter weight comes in handy for work in soft soil conditions. The shorter track allows for easier turning and increased maneuverability on the job site. Also offered is a 90-in (2286-mm) blade for more precise work in confined job conditions such as between buildings with narrow lot lines.

Isolation-mounted, dual-path hydrostatic drive components on the 650L deliver precise variable power turning and counter rotation for added maneuverability and performance. The adjustable operator settings allow users to set the steering, shuttle, and maximum speed based on personal preference or application. The dual hydrostatic pumps deliver power to each track, allowing operators to push more material through the turn, reducing the number of passes required to move material, says Case. 

The seat on the 650L tilts easily for access to the hydrostatic system. The new design reduces the machine’s operating height by 5 in (127 mm). Optional hydraulic test ports are available for fast diagnosis and easy troubleshooting.

An optional cab is isolation-mounted from the main frame to cushion against noise and vibration. The mechanical suspension seat is standard, with an optional air suspension seat. A high-capacity air-conditioning system is standard with cab units. The narrow dash and tapered hood allow exceptional visibility to the blade, making it easy to gauge material flow under the blade.

The undercarriage features a double-reduction with planetary final drive for high tractive effort and long life. There are two track options available for the 650L crawler dozer. The Case Lubricated Track is sealed and lubricated, with an oil reservoir in each pin. The Case Extended Life Track uses a large diameter hardened bushing, which offers enhanced durability and undercarriage life in abrasive soil conditions.

The rigid undercarriage enables precise track alignment and easy grading. The 650L is available in Long Track (LT), Wide Track (WT), and Low Ground Pressure (LGP) configurations to match operating conditions. A 49° sloping track frame cover, along with ample space between the track and the machine, helps shed material and enables easy undercarriage cleaning.

Swing-out access doors and sight gauges for ground line maintenance and fluid level checks decrease service time. The front grill also swings out, along with an access door to the engine for easy servicing. Swing-up access doors reduce the time it takes to change the hydraulics and hydrostatic transmission filters.

Operating weights on the 650L are 16,250 lb (7370 kg) on the LT, 16,800 lb (7620 kg) on the WT, and 17,550 lb (7960 kg) on the LGP.

In addition to the 650L crawler dozer, Case offers the 84-net-hp (62.6-kW) 750L and 96-net-hp (72-kW) 850L. Case also offers three crawler dozers above 100 hp.

A variety of attachments, such as winches, forestry guarding, laser blade control and rippers, are available for the Case crawler dozer line.

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