4-49. SERVICE HEADLIGHT LAMP MAINTENANCE (Contd)
Headlamp alignment is basically the same for both
Inflate tires on vehicle before starting procedure. (Refer to
Measured height (H) varies depending on model of vehicle
and load configuration.
Position vehicle on level ground 25 ft. from and facing a vertical wall.
Measure height (H) from ground up to center of headlamp (3).
Using chalk, draw a horizontal line across vertical wall at center height (H) of headlamp.
Draw a vertical line through horizontal line for center position (C) of vehicle.
Measure distance from center to center of headlamp (D) and divide measurement in half.
Draw two vertical lines (D) at equal distance from center position line CC).
Measure down one-twelfth from horizontal line (H) and mark horizontal lines through headlamp
vertical lines CD).
Turn headlamps on low beam and block out one headlamp.
Adjust headlamp (3) using vertical adjusting screw (8) and/or horizontal adjusting screw (9) until
center of headlamp beam is aligned with lower horizontal and vertical lines.
Repeat steps 8 and 9 for other headlamp.
FOLLOW-ON TASK: Check headlight lamp for proper operation (TM 9-2320-387-10).