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Equipment Operator Basic - Beginning construction equipment operators manual
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Figure 4-6.—Typical sealed beam headlight assembly. lights that outlines the height of the vehicle. Some vehicles have a separate switch for the clearance lights. When you are operating a vehicle at night with clearance lights, do not forget to turn them on. Side  Marker  Lights Side marker lights are similar to clearance lights; however; they indicate the full-overall length of the vehicle as viewed from the side. They must also be visible  from  a  minimum  distance  of  500  feet  from  the vehicle.  Side  marker  lights,  mounted  near  the  front  of the vehicle, are also amber and those near the rear are red. Reflectors Reflectors (except for those used in the lights) are used  as  an  additional  safety  precaution  in  case  lights burn  out  or  are  broken.  When  mounting  reflectors, ensure they are between 24 to 42 inches above the ground. Taillights and Brake Lights All taillights must show red and be visible from at least 500 feet from the rear of the vehicle. The taillight lens should be replaced if it is not red or contains a dot of another color or if it is cracked, broken, or does not fit tightly. A brake light is usually combined with the taillight  by  using  a  double-contact,  double-filament bulb; however, it maybe a separate light. Stop lights must light up immediately when the brake pedal is depressed; that is, at the beginning of the downward action   of   the   brake   pedal.   Brake   lights   are   a safety-required item and they must be operational at all times. Burnt-out or weak lights should be documented and  repaired  before  operating  your  vehicle  or  piece  of equipment. Auxiliary  Lights Lights  that  can  be  turned  on  or  off  for  the convenience or safety of the driver or passengers are called auxiliary lights. These lights are wired to be turned on and off independently, and not with the headlights.  When  performing  your  prestart  operation, you  should  ensure  all  auxiliary  lights  work. SPOTLIGHTS.—  Spotlights  are  often  mounted  on construction   equipment   and   weight-handling equipment.  When  conducting  prestart  operations, always make sure the spot-lights work because you never  know  when  you  will  encounter  conditions  or situations  requiring  their  use. BACKUP   LIGHTS.—   Backup   lights   are accessories for many vehicles. They may be mounted singly or as a pair, one on each side. Backup lights lenses must be colorless and must turnoff automatically when the vehicle is moving forward. Backup lights may also be connected to a audible signal. A backup light must be aimed to strike the road at a distance that does not exceed 25 feet from the rear of the vehicle. PARKING LIGHTS.—  Parking  lights  have  amber or white lenses and are located on the front of the vehicle. They turn on and off with the same switch as the  taillights. Fuses Fuses are safety devices placed in electrical circuits to protect wires and electrical units from a heavy flow of current. Each circuit, or at least each individual 4-5







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