Caterpillar в хронологічному порядку

• 212 Motor Grader Diesel tandem drive 1R1-1R1130 '1940;
• 212 Motor Grader gas tandem drive 2R1-2R63 '1940;
• 212 Motor Grader Diesel tandem drive 1U1-1U368 '1946;
• 212 Motor Grader diesel tandem 9T1-9T5220 '1947.

The first Cat DW10 (1N series) was introduced in 1941, powered by a 90 horsepower Caterpillar D468 diesel engine with the exhaust exiting the machine under the body like a truck.

It featured a 5-speed direct drive transmission and vacuum operated Bendix brakes and was very stylishly art-deco in appearance with lots of sweeping curves and the headlights faired into the front fenders.

The 1N series DW10s did not have rear fenders though.

Cat did not manufacture a scraper for this machine, instead leaving it up to LaPlant-Choate and LeTourneau to supply suitable equipment and the controls to operate them.

LaPlant-Choate supplied the CW-10 "Carrimor", a 10 cubic yard heaped hydraulically operated scraper and LeTourneau offered an adaptation of its model LS "Carryall" (the model DLS) cable controlled scraper which held a similar yardage.

Less than twenty DW10s were delivered with the LeTourneau "DLS" combination.

Although Caterpillar did not build its own scrapers at this point, it did manufacture a bottom dump wagon for use with the DW10 known as the W10 Wagon which held 11 cubic yards and was hydraulically operated.

World War 2 restricted production of the DW10 as plant capacity was turned over to the manufacture of much-needed track type tractors and munitions for the war effort.

As war restrictions were being lifted, a revised version of the machine, the 6V series, was released in 1946.

This was also powered by the D468 engine, now rated at 100 horsepower.

Some modifications, brought about by operational experience and manufacturing efficiencies, were incorporated into the 6V series DW10.

These included the removal of the headlights from their faired position in the front of the fender to a headlamp placed on top of it on a bracket and the introduction of rear fenders to protect the operator from flying mud and debris thrown up when driven at speed.

The vacuum brakes were deleted, replaced by a full air braking system.

Trailed equipment was now limited to the LaPlant-Choate CW10 scraper (as Cat had cut it’s ties with LeTourneau in 1944) or a revised version of the W10 wagon which now held 14 cubic yards.

Not a great many 6V series DW10s were manufactured before the type was replaced by the final version, the 1V series, in 1947.