Caterpillar 14H

The Caterpillar 14H is a large-frame motor grader built for highway, county, and mining haul-road work that needs a wide moldboard and high blade force, a size class above Cat's mid-frame 140H/160H graders. Two engine families were used across the run: an earlier configuration built around the Cat 3306 diesel rated near 215 hp (160 kW) net, and a later configuration running the Cat 3176C ATAAC variable-horsepower diesel, with net output quoted anywhere from about 215 up to 240 hp depending on gear range and series. Standard operating weight runs roughly 41,400 to 41,500 lb (about 18.8 metric tons) depending on configuration and tires. Cat built the 14H from the mid-1990s into the mid-2000s, following the 3306-powered 14G and preceding the 14M line that took over the large-frame grader slot. Factory configurations included open ROPS or an enclosed cab, a standard 4.3 m (14 ft) moldboard with a wider board offered, rear ripper/scarifier and front blade attachments, and a snow wing option, all working through the machine's worm-drive circle and drawbar-circle-moldboard assembly.

The biggest change across the 14H's production life was the move to the 3176C ATAAC engine arrangement, which pushed peak net output toward 240 hp and brought the autoshift and variable-horsepower electronics that later H-series graders relied on. Cat also introduced a High Performance Circle option later in the run aimed at cutting down the recurring circle wear-strip adjustment work owners had lived with since the 14G. The 14H left the lineup when the 14M and its ACERT-era engine took over the large-frame grader spot. In the used and parts market today, the 14H is still common in county, state DOT, and mining fleets that bought them new and ran them well past factory support. It shares tandem case, circle-drive, and drawbar-circle-moldboard wear parts with the 14G and 14M within the same size class, which keeps replacement components reasonably available even as new-machine parts support for the model itself has thinned.

Below: full specifications, fluids & capacities, the factory service schedule, common service parts, verified fault codes, what owners discuss, attachment guidance, the complete assembly directory, and a serial-number reference. Complete parts lists with full OEM part numbers, exploded diagrams, quantities, and fitment data are available free in Heavy Parts AI.