1996 Mercury Sable Owner's Manual - Page 345
1996 Mercury Sable Manual
Page 345 highlights
Position the vehicle on a surface that is level on the front-to-rear direction. If the vehicle cannot be placed on a true level surface, the headlamps still can be adjusted using the VHAD if the slope of the surface is accurately known and does not differ by more than 1.2" from true level. A difference of 2.27 inches in height of the surface between the front and rear wheels corresponds to 1.2" slope. If the vertical adjuster is within +/ 4 graduations about zero, the vertical headlamp aim is within specification; and if the horizontal adjuster is within +/ 2 graduations about zero, the horizontal headlamp aim is within specification. 318
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318
Position the vehicle on a surface that is level on
the front-to-rear direction.
If the vehicle cannot be placed on a true level
surface, the headlamps still can be adjusted
using the VHAD if the slope of the surface is
accurately known and does not differ by more
than 1.2" from true level. A difference of 2.27
inches in height of the surface between the front
and rear wheels corresponds to 1.2" slope.
If the vertical adjuster is within +/
°
4
graduations about zero, the vertical headlamp
aim is within specification; and if the horizontal
adjuster is within +/
°
2 graduations about zero,
the horizontal headlamp aim is within
specification.