About · Caterpillar D4Overview
The Caterpillar D4 is a mid-size crawler bulldozer with an operating weight of 13,272 kg and an engine output of 130 hp. It sits in a well-established segment of the crawler dozer class, positioned between light utility machines and heavier production dozers. With a blade capacity of 3.26 m3 and a production lineage stretching from 1936 to the present, the D4 represents one of the longest-running model lines in construction equipment.
Typical applicationsWhere this machine is used
The D4 class is suited to earthmoving, site preparation, grading, and land clearing on medium-scale projects where a balance of maneuverability and pushing power is required. It is commonly deployed in road construction, residential and commercial site development, forestry operations, and agricultural land management. The machine's weight class allows it to work effectively in confined areas while still delivering meaningful blade capacity for bulk material movement.
Used-market inspectionWhat to check before buying
When evaluating a used D4 or equivalent mid-size crawler dozer, prioritize a thorough inspection of the undercarriage, as track frames, rollers, idlers, and sprockets represent significant ownership costs and their condition directly reflects how the machine was operated and maintained. Inspect the blade and cutting edge for wear and structural damage, and verify that all hydraulic cylinders and lines are free of leaks. Request full service records where available, and confirm that the engine starts cleanly, reaches operating temperature without excessive smoke, and shows no signs of oil or coolant contamination. If a ripper is present, check pivot pins and wear points carefully. A pre-purchase inspection by an independent qualified technician is advisable for any machine in this weight class.
Current marketPrice position
The Caterpillar D4 is cross-shopped primarily against the John Deere 700K and the Case 1150, both of which occupy the same weight and horsepower segment. The D4's broad parts and dealer network, combined with its long production history, supports strong residual value relative to some competitors. The John Deere 700K and Case 1150 offer comparable blade capacity and engine output, making configuration, condition, and attachment specification the principal differentiators when evaluating machines within this class. Within the D4's own price band, the principal attributes that move a unit above or below the class average are accumulated operating hours, undercarriage condition, blade type and configuration, the presence of a ripper or other attachments, cab specification, and overall mechanical condition. Machines with low hours, well-maintained undercarriage, and full attachment sets will command a premium over those with high hours or deferred maintenance.