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Overview of the D4K LGP
The Caterpillar D4K LGP (Low Ground Pressure) dozer is a compact, high-visibility machine designed for fine grading, site prep, and light to moderate earthmoving. Introduced as part of CAT’s K-series lineup, the D4K LGP is engineered with a wider undercarriage and lower ground pressure to operate efficiently on soft or sensitive terrain. It features a six-way PAT (Power Angle Tilt) blade and hydrostatic transmission, making it a favorite among contractors for precision work.
Caterpillar, founded in 1925, has long been a leader in track-type tractors. The D4K series was developed to bridge the gap between the smaller D3K and the heavier D5K, offering a balance of maneuverability and pushing power. Thousands of D4K units have been sold globally, particularly in forestry, residential construction, and utility sectors.
Terminology Explained
The standard transport width of the D4K LGP is approximately 8 feet 6 inches (102 inches), which aligns with the legal width limit for most U.S. highways without requiring an oversize permit. However, this measurement can vary slightly depending on track shoe width and blade configuration.
To reduce width for transport:
A Story from the Field
In Georgia, a contractor needed to move his D4K LGP between two residential sites. His trailer was exactly 8 feet 6 inches wide. By angling the blade and loading the dozer slightly off-center, he managed to stay within legal width. However, when he later upgraded to wider 28-inch track shoes for swamp work, he had to start pulling permits for every move. He eventually bought a detachable gooseneck trailer with outriggers to accommodate the wider stance.
Recommendations for Transport
The Caterpillar D4K LGP can typically be transported without a permit if configured carefully, especially with standard track shoes and a fully angled blade. However, any modifications or wider shoes may push the machine beyond legal width limits. With proper planning and awareness of transport regulations, the D4K LGP remains a highly mobile and efficient grading solution.
The Caterpillar D4K LGP (Low Ground Pressure) dozer is a compact, high-visibility machine designed for fine grading, site prep, and light to moderate earthmoving. Introduced as part of CAT’s K-series lineup, the D4K LGP is engineered with a wider undercarriage and lower ground pressure to operate efficiently on soft or sensitive terrain. It features a six-way PAT (Power Angle Tilt) blade and hydrostatic transmission, making it a favorite among contractors for precision work.
Caterpillar, founded in 1925, has long been a leader in track-type tractors. The D4K series was developed to bridge the gap between the smaller D3K and the heavier D5K, offering a balance of maneuverability and pushing power. Thousands of D4K units have been sold globally, particularly in forestry, residential construction, and utility sectors.
Terminology Explained
- LGP (Low Ground Pressure): A configuration with wider tracks to reduce ground pressure and improve flotation.
- PAT Blade: A blade that can be angled, tilted, and lifted hydraulically for versatile grading.
- Transport Width: The total width of the machine when loaded for transport, including blade and track extensions.
The standard transport width of the D4K LGP is approximately 8 feet 6 inches (102 inches), which aligns with the legal width limit for most U.S. highways without requiring an oversize permit. However, this measurement can vary slightly depending on track shoe width and blade configuration.
To reduce width for transport:
- Angle the blade fully to one side. This can reduce the overall width by several inches.
- Turn the machine slightly on the trailer. Angling the dozer diagonally can help fit within the legal width envelope.
- Use narrower track shoes if available. Standard LGP shoes are often 25 inches wide, but narrower options may be used for specific applications.
A Story from the Field
In Georgia, a contractor needed to move his D4K LGP between two residential sites. His trailer was exactly 8 feet 6 inches wide. By angling the blade and loading the dozer slightly off-center, he managed to stay within legal width. However, when he later upgraded to wider 28-inch track shoes for swamp work, he had to start pulling permits for every move. He eventually bought a detachable gooseneck trailer with outriggers to accommodate the wider stance.
Recommendations for Transport
- Measure the machine at its widest point before scheduling transport
- Keep a copy of the spec sheet in the truck for reference
- Use blade stops or chains to secure angled blades during transit
- Check state DOT regulations for oversize load thresholds and signage requirements
- Consider a detachable trailer for easier loading and unloading
The Caterpillar D4K LGP can typically be transported without a permit if configured carefully, especially with standard track shoes and a fully angled blade. However, any modifications or wider shoes may push the machine beyond legal width limits. With proper planning and awareness of transport regulations, the D4K LGP remains a highly mobile and efficient grading solution.
