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Section IV: Glossary
Page 59
A
Anchoring Device
- Used to attach cable ends, snatch blocks, safety chains,
and tie-down assemblies to the towing vehicle.
Approach Angle
- Angle between the plane of the platform and the ground.
Attachment
- Any device that can be added to a basic unit or assembly.
Auxiliary Braking Device
- A device which attaches to the disabled vehicle to
assist the tow truck's brakes in retarding or stopping both vehicles.
Auxiliary Equipment
- Equipment that is not necessary to perform the basic
function of the primary equipment.
Auxiliary Towing Lights
- Stop, tail, and turn signal lights attached to the trailing
end of the towed vehicle and operated as part of the towing vehicle lighting
system.
B
Bending Moment
- The force times the distance from a reference point to the
point the force is applied causing bending.
Bird Nesting
- The tangling and intertwining of wraps and layers on a drum.
Body
- The structure mounted on a chassis cab or that portion of the vehicle that
carries the load.
Body Hinge
- The attachment mechanism connecting the body to the hinge pin
at the pivot axis about which the body rotates into the tilt position.
Body Subframe
- Another term for body understructure or mounting frame.
Body Weight
- Unmounted weight of a body with applicable options.
Boom
- The structure member that supports the load.
Boom Angle
- The boom angle is measured between a horizontal line and a line
through the boom pivot and center of sheave.
Boom Head
- The structural member at one end of the boom which can swivel
and support the load lifted through the sheave and sheave support device.
GLOSSARY OF TERMS
