TM 5-3825-225-14&P - KEY - Refill EXPECTED TEMPERATURES Lubricants Capacity (AAP) 0°f TO 30°F (-18°c TO -1°c) 30°F TO 80°F (-1°C TO 27°C) Over 80°F (Over 27°C) Intervals OE/HDO (MIL-L-2104) Lubrication Oil, Internal Combustion Engine, Heavy Duty 6 Qts 7 with Filter OE/HDO 10 OE/HDO 30 OE/HDO 50 D - Daily GO 80/90 (MIL-L-2105) Lubricating Oil, Gear, Multipurpose 1 Pt GO 80/90 GO 80/90 GO 80/90 Q - 150 hrs or Quarterly GAA (MIL-G-10924) Grease, Automotive and Artillery As Req S - 300 Hrs or Semiannu- ally Antifreeze (MIL-A-46153) As Req A - 600 Hrs or Annually FOR ARTIC OPERATIONS, REFER TO FM 9-207 NOTES: 1 Oil Pressure.  Check the oil pressure daily.  If the oil pressure is below 25 psi (172 kPa), check the oil level.  If the oil pressure is above 60 psi (414 kPa) check the crankcase oil filter. 2. Air Restriction Indicator.  Check the air restriction indicator daily.  If it is up, check the air cleaner filter elements and the intake air for clogging. CAUTION Do not overfill the crankcase.  The oil level must never be higher than the FULL mark on the dipstick or damage to the engine may occur. 3. Crankcase Dipstick and Filter Cap.   Check the oil level daily.  The oil level should always be maintained between the ADD and FULL marks on the dipstick.  Add or drain oil (OE-HDO) as necessary. 4. Crankcase Oil Filter and Drain Plug.  Every 150 hours or quarterly, remove drain plug, drain oil, and replace oil filter element.    Clean  filter  head  with  dry  cleaning  solvent  (Item  7,  Appendix  D).    Do  not  attempt  to  clean  and  reuse  filter element.  Lightly oil top filter head seal and gaskets with clean engine oil and install new oil filter element.  Install drain plug and add 7 quarts (6.6 I1) of oil (OE/HDO) to engine crankcase. 5. Fuel  Filters.   Every  600  hours  or  annually,  replace  fuel  filter  elements.    Do  not  attempt  to  clean  filter  elements. Replace them.  After replacing the filter elements, prime the fuel lines and clear air bubbles from system. 6. Wheel  Bearing  Oil.    Every  300  hours,  semiannually,  or  as  required,  replace  the  wheel  bearing  oil  (GO  80/90). Remove the wheel hubcap and add the oil. 7. Radiator.  Every 300 hours or semiannually, renew the engine coolant.  Remove the radiator cap and add coolant to bring the water to coolant ratio to 50:50. 3-5