TM10-3930-660-20 8-44. BATTERY CABLES AND TERMINALS -  SERVICE/REPLACE This task covers: a. Service b. Removal c.  Installation Initial Setup Tools Materials/Parts Tool Kit, Automotive Mechanics Lockwasher  (39) Starwasher  (32) Equipment  Condition Starwasher  (35) Vehicle parked on level ground. Tie Wrap (45) (App. C, Item 53) Soda Solution (App. C, Item 46) Petroleum Jelly (App. C, Item 15) WARNING DO not smoke or allow flame or spark in the vicinity while servicing, removing, or installing batteries, Batteries generate hydrogen, a highly explosive gas. Severe personal injury could  result, To avoid sparks when removing cables from batteries, always begin by removing the negative battery cable  first. WARNING Batteries are filled with acid electrolyte solution. Always wear protective clothing, rubber gloves, and eye protection when servicing, removing or installing batteries. 8-114