Jerr-Dan MPL40, Operation And Maintenance Manual

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5-376-000086
REV. 4 - 07/10
Section IV: Glossary
Page 85
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