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Section IV: Glossary
Page 90
DOT (Department of Transportation)
- A federal agency dealing with regulations
concerning both the manufacture and operation of motor vehicles and motor
vehicle equipment. See NHTSA.
Driveline
- The driveshaft and associated joints.
Drum
- Any spool on which are wrapped ropes used in machine operation.
E
Extend Cylinder
- Cylinders used to extend or retract boom structures.
F
Filter
- A device whose primary function is the retention by a porous media of
insoluble contaminants from a fluid.
Final Stage Manufacturer
- A person, firm, or corporation who performs such
manufacturing operations on an incomplete vehicle that it becomes a
completed (end-user) vehicle.
FMVSS (Federal Motor Vehicle Safety Standards)
- Regulations promulgated
by NHTSA under Public Law 89-563, which are mandatory and must be
complied with when motor vehicles or items of motor vehicle equipment are
manufactured and certified thereto.
Frame
- Structure on which either the upper or lower equipment is located.
Frame Cutoff
- Centerline of rear axle(s) to the rearmost point of the chassis
frame as modified for body installation.
Frame Lift
- See Underlift.
Frame Section Modulus
- The engineering term that indicates the relative
strength of frames as it relates to shape. It takes into account frame depth,
flange width, and material thickness. All other things being equal, the frame
with the largest section modulus will have the greatest strength and stiffness,
i.e., the ability to more effectively resist deflection under load.
Free Spool
- The operation of unspooling wire rope from a drum by pulling on
the end of the wire rope while the winch is stationary. The drum is
disconnected (declutched) from its powertrain during this operation.
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