What started off as a modified farm tractor, the bulldozer rapidly became one of the most useful pieces of equipment with excavating and construction. A bulldozer is an extremely powerful tractor equipped with a large blade, used to push hefty amounts of material such as soil, sand, rubble, etc. during construction work. A dozer’s tracks give them tremendous ground holding ability and agility through very jagged terrain. With great ground holding capabilities and a torque divider intended to convert the power of the engine into dragging ability, bulldozers are able to use their own weight to push dense objects and remove things from the ground. As the heart and the soul of the bulldozer, the blade peels layers of soil and pushes it forward as the tractor advances.
Use of Bulldozers
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Agriculture
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Backfill around buildings and foundations
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Create runoff grades for crops and animal pens
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Level, pile or grade dirt, gravel or snow
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Construction
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Landscaping
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Cut Brush
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Grind Stumps
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Grading
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Sweeping
Types of Bulldozers
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Crawler
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The crawler bulldozer looks like a tractor and is used for pushing sand and any other heavy materials from one place to another. Being a tracked vehicle, the crawler does not have any tires. Larger crawlers typically have a ripper installed at its rear end, making its coarse plate ideal in irregular fields.
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Wheeled
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Much larger than the crawler, this bulldozer is one that is used mostly in various construction plans such as stadiums and water parks. Its large, heavy tires allow for a superb, highly efficient performance. The wheel bulldozer has a fully articulated hydraulic steering which makes it easy and flexible to maneuver, permitting the bulldozer to move on a small axis unlike the crawler.
Types of Blades
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Angle Blade
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This blade is normally a straight blade pivot mounted on the center of a “C” frame, allowing the blade to be angled to the left or the right to enhance side castings of materials. This blade works well for a variety of uses such as stumping and stripping, shaping, ditching, trail pioneering, and general dozing of medium to softer materials. Due to the straight geometry of the blade, materials easily spill off the sides, therefore, reducing its value for carrying materials a longer distance.
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Combination Blade
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PAT Blade
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Standing for power, angle and tilt, the PAT blade is a straight blade combined with multiple hydraulically controlled tractor attachment points allowing for angle, elevation and tilt blade adjustments by the operator. This blade enhances dozing productivity and tractor versatility.
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Straight Blade
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Universal Blade
Maintenance Tips
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Ensure appropriate track tension; monitor track tension when the machine is operating and adjust accordingly. When steel tracks are too tight, it accelerates bushing wear. When they’re too loose, it can create instability and sometimes even cause derailment.
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Keep the undercarriage clean; at the end of the day, clean out mud and debris from the undercarriage as it can build up and speed up component wear. This will ensure that any material that has the potential to freeze or harden overnight is removed.
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Conduct daily inspections; examine the undercarriage for extreme or uneven wear, and for any damaged or missing components.
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Follow a schedule; if the machine is used in demanding conditions, frequent inspections should be made.
Dozer Health Checklist
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Check all lines and components for water and oil leaks
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Check that all visible nuts and screws are tightened
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Check for any structural damage that may have happened since the last operation
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Check the oil and coolant level
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Check for clogging or damage to the radiator
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Check the engine accessory drive belt condition
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Check that the air filter restriction warning light is not illuminated
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Check the fuel tank, DEF tank and hydraulic reservoir levels
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Check hydraulic oil for cleanliness
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Check that all battery connections are properly tightened
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Check the conditions of the blades, cutting edges and ripper points
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Lubricate all grease points
[Links to Equipment Type Guides/Manuals]
[Links to Equipment Type Video]
Common Bulldozer Manufacturers
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Allis Chalmers
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BEML
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Case
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Caterpillar Inc.
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Dressta
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Euclid
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Fiat-Allis
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International Harvester
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John Deere
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Komatsu
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Liebherr
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LiuGong
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Sutter Equipment Co.
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Terex
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XGMA
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