120 Maintenance Electrical System Maintenance Battery Care WARNING Battery posts, terminals and related accessories contain lead and lead compounds, chemicals known to the State of California to cause cancer and reproductive harm. Wash hands after handling. The electrolyte level on maintenance free batteries cannot be checked. Periodically, the condition and the state-of-charge of each battery should be checked by a Volvo Truck dealer. Maintenance free batteries DO NOT require any attention other than keeping them clean and firmly clamped in place in their respective trays. Keep the cable connections clean and tight.
Check the battery state-of-charge indicators periodically to determine battery condition. WARNING W3001022 Always wear eye protection when working around batteries to prevent the risk of injury due to contact with sulfuric acid or an explosion. Check for worn cables at every major inspection. Replace worn cables. Check battery terminals for cracks. When disconnecting battery terminals, always disconnect the ground terminal first. When reconnecting, always connect the ground terminal last. Lighting Check the lights on the vehicle daily. Replace burned out inserts and bulbs. Following is a listing of bulb types. Replace any broken or cracked side or rear reflectors.
Headlights should be checked for aim at least once per year. W3005266