INTRODUCTION. The 613B series tractor-scraper is provided in two configurations; a 613BSNS, 613BSNS1 (Type I),
and a 613BSS, 613BSS1 (Type II). Both types of tractor-scraper can be transported using Drive On/Drive Off, Low
Altitude Parachute Extraction (LAPES), or Low Velocity Air Drop (LVAD) techniques. The 613BSS and 613BSS1 (Type II)
were developed to permit transport by helicopter.
For helicopter lift, the 613BSS and 613BSS1 must be separated into two sections, and only the 613BSS and 613BSS1
(Type II) can be sectionalized. The two sections are: tractor (lower steer axle to draft frame connection), and bowl
(scraper cutting edge to bowl rear). After separating the tractor from the bowl, certain procedures are required to insure
proper weight distribution. Each section must weigh less than 16,000 lbs in order to accomplish helicopter transport.
GENERAL DIMENSIONS. Study Figures 1 and 2. Dimensions for Drive On/Drive Off and for helicopter transport are
shown. Also, locations for lifting and tie down eyes, as well as storage locations for weight distribution items and
transportation data are shown.
INTERCHANGEABILITY. The tractor of the 613BSS Tractor-Scraper is interchangeable with the tractor of the 613WDS
Tractor-Water Distributor. The tractor from a 613BSS can be coupled to the Water Distributor of the 613WDS, and vice