TM 55-1930-209-14&P-9-1 Table C-1.  Preventive Maintenance Checks and Services for Electrical Power Systems (Continued) B - Before D - During A - After H - Hourly Interval Interval Procedures: Equipment Is Item Item to be Check for and have repaired Not Ready/ No. B   D A H Inspected or adjusted as necessary Available If: • d.   With generator load applied, check from switchboard: 1)   PRESS-TO-TEST Engine Failure Lights. 2)   PRESS-TO-TEST 440-Voltt Ground Detection Light. 3)   Report failures to shift leader or bargemaster. • e.   With engine idling, check that oil pressure Oil pressure gauge shows positive pressure.  If not, gauge does not stop engine and report problem to shift indicate positive leader or bargemaster. level. f. With engine idling.  ch eck that fuel pres- Fuel pressure sure gauge on engine is normal (green) gauge does not range.  If not, report problem to shift indicate normal leader or bargemaster. (green) range. • g.   With engine idling, check that coolant Gauge does not temperature gauge is registering.  As register or tem- engine warms up, gauge should move to perature exceeds higher reading.  H gauge does not register operating limits. or it temperature exceeds operating lim- its, stop engine and report problem to shift leader or bargemaster. • 50 hrs h.   Check that batteries and battery cables and connections are tight, corrosion free and coated with anti-corrosion grease. WARNING Fumes from batteries may be flammable and explosive.  Do NOT smoke or have open flame when checking or working on battery bank.  Battery electrolyte presents potential health hazards.  Contact with eyes and skin should be avoided.  Safety glasses, gloves, and rubber aprons must be worn when han- dling this chemical.  Electrolyte contains sul- furic acid which can cause severe burns and Is highly toxic to skin, eyes, and respiratory system. • 50 hrs i. Check batteries for proper electrolyte level.  Add distilled or clean tap water to bring level above plates. C-11