- KEY -
0°f TO 30°F
(-18°c TO -1°c)
30°F TO 80°F
(-1°C TO 27°C)
7 with Filter
D - Daily
Q - 150 hrs or
S - 300 Hrs or
A - 600 Hrs or
FOR ARTIC OPERATIONS, REFER TO FM 9-207
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.
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.
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.
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.
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.
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.
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.
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.