DICTIONARY OF AUTOMOTIVE TERMS - Profile Pictures for ...

acking:
Some material placed on the root side of a weld to aid control of
penetration.
Also see
steel backing
backing pad:
A rubber disc which is secured to a spindle which in turn is attached to a
drill or other tool which rotates the spindle. An abrasive disc or polishing
disc is secured to the backing pad.
backing plate:
The part of a drum brake to which the wheel cylinder(s) and the brake
shoes are attached. See brake backing plate.
backlash:
The amount of "play" or clearance between two parts. In the case of gears,
it refers to how much one gear can be moved back and forth without
moving the gear into which it is meshed.
backlight:
The rear window of a vehicle. Most people call it a "rear window" and
think of "backlight" as the taillight
backlight heater:
Heated rear window
backlight defogging system:
Heated rear window
back panel:
The panel of the body shell set underneath the trunk lid. It is sometimes
referred to as the rear valance if the area below the trunk lid consists of
only a single panel that extends down to the bottom of the body; in many
designs, however, the rear valance is a separate horizontal panel that