LEMON Manuals: Even more car manuals for everyone
Home >> Mazda >> 2005 >> B4000 Base, Standard >> Repair and Diagnosis >> Accessories & Equipment >> Headlights >> Lighting System >> Headlamp Adjustment - Screen Method

Headlamp Adjustment - Screen Method

NOTE:
  • Horizontal aim is not necessary for this vehicle and is not adjustable.
NOTE:
  • Consult your state's vehicle inspection manual for recommended tolerance ranges for visual aiming.
  1. Before starting headlamp assembly adjustment:
    1. Check the tire inflation.
    2. Check that no other load is in the vehicle other than a half tank of fuel.
    3. Check that the headlamps are clean.
    4. Check for proper headlamp operation.
    5. Check that the vehicle is on level ground.
    6. If the vehicle is equipped with air suspension, make sure the switch is on.
      NOTE:
      • The vertical wall or screen must be a minimum of 2.4 meters (8 ft) wide.
  2. Park the vehicle on a level surface approximately 7.6 meters (25 ft) from the vertical wall or screen directly in front of it.
    Fig 1: Parking Vehicle On Level Surface 7.6 Meters From Vertical Wall
    G03731622Courtesy of MAZDA MOTORS CORP.
    NOTE:
    • The center of the lamp is marked by a 3 mm (0.12 in) circle on the headlamp lens.
  3. Mark a horizontal reference line on the vertical wall or screen.
    1. Measure the center of the headlamp height to ground and record.
    2. Make a 2.4 meter (8 ft) horizontal mark (masking tape) on the vertical wall or screen at the same distance from the ground as previously recorded.
      Fig 2: Marking A Horizontal Reference Line On Vertical Wall Or Screen
      G03731623Courtesy of MAZDA MOTORS CORP.
      NOTE:
      • This procedure should be done in a dark environment to effectively see the headlamp beam pattern.
  4. Turn on the low beam headlamps to illuminate the wall or screen and open the hood.
    1. Measure the center of the headlamp height to ground and record.
    2. Make a 2.4 meter (8 ft) horizontal mark (masking tape) on the vertical wall or screen at the same distance from the ground as previously recorded.
      NOTE:
      • The appearance of the beam pattern may vary between vehicles.
  5. On the wall or screen locate the high intensity area of the beam pattern.
    Fig 3: Identifying High Intensity Area Of Beam Pattern
    G03731624Courtesy of MAZDA MOTORS CORP.
    NOTE:
    • The appearance of the beam pattern may vary between vehicles.
  6. Identify at the top edge of this high intensity area a distinct horizontal cutoff in the beam pattern. If the top edge of this cutoff is not even with horizontal reference line. The headlamp beam will need to be adjusted.
    Fig 4: Identifying Top Edge Of High Intensity Area Distinct Horizontal Cutoff In Beam Pattern
    G03731625Courtesy of MAZDA MOTORS CORP.
scientia non olet · About LEMON Manuals