TM 9-2330-389-14&P - KEY - EXPECTED TEMPERATURES LUBRICANTS Above +15° F (Above -9° ) + 40° F to -15°  F (+ 4° to -26° ) +40° F to -65° F (+4°  to -54° ) INTERVALS OE/DHO OE/HDO-30 OE/HDO-10 S - Semiannual (MIL-L-2104) Lubricating Oil, Internal A - Annual Combustion Engine, OEA Tactical Service (See Note 1.) OEA (MIL-L-46167) Lubricating Oil, Internal Combustion, Arctic All Temperatures GAA (MIL-G-2387) Grease, Aircraft and Artillery All Temperatures NOTES: 1.   For  operation  of  equipment  in  extended  cold temperatures     below     -15° F     (-26° C), remove lubricants prescribed in the key for temperatures  above  -15° F  (-26° C).    Relubricate with     lubricants     specified     in     the     key     for temperatures    below-15° F     (-26° C).          If     OEA lubricant  is  required  to  meet  the  temperature changes prescribed in the key, OEA lubricant is to  be  used  in  place  of  OE/HDO-10  lubricant  for all    temperature    ranges    where    OE!    HDO-10 lubricant is specified in the key. 2.   Wheel   Bearings:      Every   12   months,   remove, clean, and repack with GAA.  Refer to TM 9-214, Inspection, Care, and Maintenance of Antifriction Bearings. 3.   Grease   cross   axle   pivot   through   zerk   fitting until grease appears around pivot seal. 3-4