TM 9-2320-260-20
I
4-38. HEADLIGHT HOUSING AND SEALED BEAM LAMP MAINTENANCE (Contd)
1.
Connect battery ground cable.
Draw a horizontal line (22) on a wall the height of center of headlight (25).
2.
Park truck facing wall so headlights (25) are 25 ft (762 cm) from wall.
3.
Draw a vertical line (20) through horizontal line (22) so it is in line with center of headlight (25).
4.
Turn headlights on low beam (TM 9-2320-260-10).
5.
Adjust headlight horizontal direction with adjusting screw (24) until left edge of bright light
6.
area (21) on wall is 2-6 in. (5.08-15.24 cm) right of vertical line (20).
Adjust headlight vertical direction with adjusting screw (23) until top edge of bright light area (21)
7.
on wall is touching lower side of horizontal line (22).
Adjust other headlight using same procedure.
8.
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