08-20-2025, 06:33 PM
Machine Background
The Clark 501S motor grader is a mid-weight construction machine well-known for its robust design and versatility in road grading, earthmoving, and site preparation. Produced primarily in the 1970s to 1980s, it reflects engineering focus on durability, operator control, and power, typically used in municipal, construction, and mining applications. Clark Equipment Company, with a rich history in heavy machinery, designed the 501S with features catering to all-wheel steer and all-wheel drive functions enhancing maneuverability and traction.
Engine and Powertrain
In municipal road maintenance, the Clark 501S motor grader excels in snow removal and road leveling tasks. Its full all-wheel steer capability enables operators to navigate tight city streets efficiently, while its robust engine and blade options manage snow banks and uneven surfaces effectively, reducing the need for auxiliary equipment.
Conclusion
The Clark 501S motor grader remains a dependable and versatile machine for mid-sized construction and maintenance projects. Combining powerful engine options with all-wheel drive and steering capabilities, it offers a balance of maneuverability, control, and productivity. Routine maintenance and proper operation extend its lifespan, making it a valuable asset in earthmoving fleets.
The Clark 501S motor grader is a mid-weight construction machine well-known for its robust design and versatility in road grading, earthmoving, and site preparation. Produced primarily in the 1970s to 1980s, it reflects engineering focus on durability, operator control, and power, typically used in municipal, construction, and mining applications. Clark Equipment Company, with a rich history in heavy machinery, designed the 501S with features catering to all-wheel steer and all-wheel drive functions enhancing maneuverability and traction.
Engine and Powertrain
- Engine options usually include the Cummins VT-555 triple nickel V8 or the Detroit Diesel 6V-71N, both delivering approximately 185 gross flywheel horsepower.
- The grader features a powershift transmission controlled electronically, linking engine performance to gear selection.
- The transmission system reduces horsepower (from 235 hp rated to approximately 210 hp) in lower gears to protect driveline components while providing sufficient power for heavy-duty tasks.
- Operating weight is approximately 32,000 lbs.
- Blade options range from 13 feet to 14 feet, providing a wide grading swath.
- The overall width can reach up to about 9 feet 2 inches depending on blade configuration and tire options.
- The machine’s frame features reinforced steel in critical stress points, contributing to durability on demanding sites.
- Full all-wheel steering and all-wheel drive provide excellent maneuverability, allowing tight turns and efficient grading on uneven or challenging terrains.
- Operator controls include levers for blade lift, tilt, side shift, and advance, along with steering wheels controlling front and rear axles.
- The grader’s hydraulic system powers blade movement and steering cylinders with smooth responsiveness.
- Circle drive motor and hydraulic lines are robustly constructed for reliable rotation and blade positioning.
- Parking brake is hydraulically engaged, ensuring safety on inclines or when stationary.
- Optional accessories include scarifiers, snow plow attachments, and rear rippers for added versatility.
- Powershift Transmission: A transmission that allows gear changes without interrupting the power flow.
- Flywheel Horsepower: Engine power rating measured at the flywheel before drivetrain losses.
- All-Wheel Steering: Steering system where all wheels contribute to directional control.
- Circle Drive Motor: Hydraulic motor responsible for rotating the blade assembly.
- Scarifier: An attachment that breaks up hard ground or pavement prior to grading.
- Regularly check and maintain hydraulic fluid levels and filters to ensure reliable blade and steering operation.
- Inspect powertrain components, especially transmission and differential, for wear.
- Monitor blade wear and replace cutting edges timely to maintain grading quality.
- Lubricate circle drive and pivot points according to manufacturer recommendations.
- Keep cooling system clean and operational for engine longevity.
In municipal road maintenance, the Clark 501S motor grader excels in snow removal and road leveling tasks. Its full all-wheel steer capability enables operators to navigate tight city streets efficiently, while its robust engine and blade options manage snow banks and uneven surfaces effectively, reducing the need for auxiliary equipment.
Conclusion
The Clark 501S motor grader remains a dependable and versatile machine for mid-sized construction and maintenance projects. Combining powerful engine options with all-wheel drive and steering capabilities, it offers a balance of maneuverability, control, and productivity. Routine maintenance and proper operation extend its lifespan, making it a valuable asset in earthmoving fleets.
