TM 55-1930-209-14&P-19 Table 9-3.  Preventive Maintenance Checks and Services for Electrical Power Systems(Continued) B -  Before D -  During A -  After H -  Hourly Interval INTERVAL ITEM PROCEDURES EQUIPMENT ITEM TO BE CHECK FOR AND HAVE IS NOT READY/ NO. INSPECTED REPAIRED OR ADJUSTED AVAILABLE IF B   D   A H AS NECESSARY d. With generator load applied, check from switchboard: 1) PRESS-TO-TEST Engine Failure Lights. 2) PRESS-TO-TEST 440-Volt 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, check 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.  If gauge does not register operating limits. or if 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 handling this chemical.  Electrolyte contains sulfuric 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. 9-11