Cat® M Series 2 Motor Graders Deliver Customer Value with More Power From Cleaner Engines, Added Operator Comfort and Productivity Gains
Drive train and hydraulics
Operators can closely match machine ground speed to the operating situation with the 8F/6R direct-drive powershift transmission, which uses the Cat Electronic Clutch Pressure Control system to modulate gear changes and Controlled Throttle Shifting for smooth directional changes without the inching pedal. Programmable Autoshift lets the operator match shift parameters to the application.
A manually controlled differential lock improves traction in adverse ground conditions. When engaged, an automatic system locks and unlocks the differential as required to optimize traction while protecting the tandem chains and differential from possible damage. Multi-disc brakes at each tandem wheel provide large braking surfaces for sure stops and long brake life.
The new M Series 2 models are equipped with an advanced electro-hydraulic system for implement control, featuring an independent oil supply to prevent contamination from other systems and to assure proper cooling for extended component life. The load-sensing hydraulic system delivers consistent, predictable cylinder response and provides balanced flow, allowing implements to be used simultaneously with minimal effect on implement and engine speeds.
Durable structures and DCM
The M Series 2 front frame uses continuous top- and bottom-plate construction for exceptional strength, and the rear frame features a robust box-section hitch design, cast axle mounting and integrated rear bumper for durability in the harshest applications, such as ripping.
The massive, one-piece, forged-steel circle is built to absorb high stress loads, and the circle-drive slip clutch reduces the potential for damage from horizontal shock loads. Six circle shoes keep the circle tighter, longer, to assure maximum control in finish-grading applications. The A-frame-type drawbar, using a tubular design for high strength and optimum durability, features a replaceable ball, removable shims (to compensate for wear) and top-adjust wear inserts.
The optimally shaped moldboard and large throat clearance keep material moving easily, resulting in less horsepower draw, more production and greater fuel efficiency. The moldboard side-shift system uses a well-protected cylinder mounted to the left to avoid snow-wing interference. A shim-less moldboard-retention system maintains blade adjustment over extended operating intervals for precise control. The retention system also permits easy adjustment or replacement of worn inserts to significantly reduce maintenance time.