REMOVAL & INSTALLATION
See Figures 1, 2, 3, 4, 5, 6 and 7
- Open the vehicle's hood and secure it in an upright position.
- Disconnect the wiring from the back of the bulb socket.
- Unfasten the locking ring which secures the bulb and socket assembly, then withdraw the assembly rearward.
- If necessary, gently pry the socket's retaining clip over the projection on the bulb (use care not to break the clip.) Pull the bulb from the socket.
- Before installing a light bulb into the socket, ensure that all electrical contact surfaces are free of corrosion or dirt.
- Line up the replacement headlight bulb with the socket. Firmly push the bulb onto the socket until the spring clip latches over the bulb's projection.
- To ensure that the replacement bulb functions properly, activate the applicable switch to illuminate the bulb which was just replaced. (If this is a combination low and high beam bulb, be sure to check both intensities.) If the replacement light bulb does not illuminate, either it too is faulty or there is a problem in the bulb circuit or switch. Correct if necessary.
- Position the headlight bulb and secure it with the locking ring.
- Aim the headlights.
AIMING THE HEADLIGHTS
See Figures 8, 9, 10, 11, 12, 13, 14, 15 and 16
The headlights must be properly aimed to provide the best, safest road illumination. The lights should be checked for proper aim and adjusted as necessary. Certain state and local authorities have requirements for headlight aiming; these should be checked before adjustment is made.
Headlight adjustment may be temporarily made using a wall, as described below, or on the rear of another vehicle. When adjusted, the lights should not glare in oncoming car or truck windshields, nor should they illuminate the passenger compartment of vehicles driving in front of you. These adjustments are rough and should always be fine-tuned by a repair shop which is equipped with headlight aiming tools. Improper adjustments may be both dangerous and illegal.
For most of the vehicles covered by this guide, horizontal and vertical aiming of each sealed beam unit is provided by two adjusting screws which move the retaining ring and adjusting plate against the tension of a coil spring. There is no adjustment for focus; this is done during headlight manufacturing.
Before removing the headlight bulb or disturbing the headlamp in any way, note the current settings in order to ease headlight adjustment upon reassembly. If the high or low beam setting of the old lamp still works, this can be done using the wall of a garage or a building:
- Park the vehicle on a level surface, with a filled fuel tank and with the vehicle empty of all extra cargo (unless normally carried). The vehicle should be facing a wall which is no less than 6 feet (1.8m) high and 12 feet (3.7m) wide. The front of the vehicle should be about 25 feet from the wall.
- Bounce the vehicle several times.
If aiming is to be performed outdoors, it is advisable to wait until dusk in order to properly see the headlight beams on the wall. If done in a garage, darken the area around the wall as much as possible by closing shades or hanging cloth over the windows.
To adjust the headlight in the vertical alignment perform the following:
- Using the adjusting screw A , adjust the headlight aim to within specifications. Refer to the illustration.
- Make sure the gage bubble is within the acceptable range.
If the bubble is outside the acceptable range, check that the vehicle is parked on a level spot. Readjust the headlight aim after parking the vehicle on the level spot.
To adjust the headlight in horizontal alignment perform the following:
- Using the adjusting screw B , adjust the headlight aim to within specifications.
- Using a flat-bladed tool, unlock the adjusting nut C . Lift and turn to adjust.
- Slide the nut C to align the top of the triangle mark to the zero position.
- Press the indicator nut C until it locks securely.