TM 55-1930-209-14&P-6 Table C-1.  Preventive Maintenance Checks and Services for Shore Discharge System (Continued) B - Before D - Daily Q - Quarterly D - During W - Weekly S - Semiannually A - After M - Monthly A - Annually Interval Procedures Item Check For And Have Equipment Item To Be Repaired Or Adjusted Is Not Ready/ No. B D A D W M Q S A Inspected As Necessary Available If 3 •   •         Hydraulic Power a.   Check reservoir level gauge (Void 5) Unit Reservoir to assure reservoir full of oil.  Add oil Level Gauge if necessary (use proper grade for extreme heat/cold). b. When oil temperature is 450F or less, set heater ON/OFF switch to ON. c. Replace hydraulic fluid in the hydraulic power unit reservoir.  Fill with Gulf Har- mony 46 AW or military equivalent as follows: 1) Place container under reservoir to catch hydraulic fluid. 2) Remove drain plug.  Drain fluid into sludge tank by sucking up fluid with bilge drain system foot valve. 3) When reservoir is completely drained, replace plug.  Wipe plug and area around plug clean. 4) Remove and clean suction strainer. 5) Remove filler/breather cap. 6) Clean filter if necessary. 7) Fill reservoir with Gulf Harmony 46 AW or military equivalent until oil level sight gauge indicates 100 percent full. 8) Replace cap. 9) Wipe clean reservoir and immediate area. 4 • Hydraulic Check that charge pressure gauge on Power Unit hydraulic power unit reads no less than Charge Pressure 250 psi.  Minimum pressure needed for Gauge proper stroke control and makeup flow for winch circuit. 5 • Hydraulic Check hydraulic fluid level is 80 percent Power Unit or more full.  Add fluid if necessary as Level Gauge follows: C-4