6D1 to 6D125.
С 1937 по 1939 годы – No. 11 Auto Patrol Single Drive (7K) и с 1937 по 1940 годы – No. 11 Auto Patrol Tandem Drive (8K).
The grader was based on the Model Twenty Eight tractor.
Serial numbers: 5E501 to 5E549.
С 1938 по 1940 годы – No. 10 Auto Patrol Single Drive (3K) и No. 10 Auto Patrol Tandem Drive (4K).
С 1934 по 1935 годы – Diesel Auto Patrol (7F) и с 1936 по 1937 годы – Diesel No. 11 Auto Patrol .
С 1937 по 1939 годы – Diesel No. 11 Auto Patrol Single Drive (5K) и с 1937 по 1940 годы – Diesel No. 11 Auto Patrol Tandem Drive (6K).
This machine was originally introduced as the "Caterpillar Diesel No. 12 Auto Patrol" on July 4,1938, but was soon renamed as a "Motor Grader" just one year later.
Weighing in at 20,360 pounds, the No. 12 Auto Patrol featured a 12-foot blade, had six forward speeds and two reverse speeds. This machine, as well as other auto patrol models, was primarily used in the building of roads and snow removal.
WheelsAge.org '2005–pr.