TM 5-4310-386-14
Section IV. OPERATION UNDER UNUSUAL CONDITIONS
Paragraph
Page
2-14
Operation in Extreme Cold ............................................................................................................2-15
2-15
Operation in Extreme Heat............................................................................................................2-17
2-16
Operation in Dusty or Sandy Areas ..............................................................................................2-17
2-17
Operation in Rainy or High Humidity Conditions ...........................................................................2-17
2-18
Operation in Salt Water Areas ......................................................................................................2-17
2-19
Operation at High Altitudes ..........................................................................................................2-18
2-14. Operation in Extreme Cold.
NOTE
When operating the K-20-D in cold weather 32°F (0°C) or below, both the engine and compressor
lubricating oils must be changed to cold weather oils.
To ensure satisfactory cold starting, the choice of the viscosity grade should be governed by the ambient temperature
prevailing at the time of starting. As to the oil change intervals, it should be kept in mind that operation below 50°F
(10°C) requires shorter oil change intervals.
Use winter-grade fuel in winter because, with ordinary fuel, waxing may occur at low temperatures and clog the fuel filter.
At excessively low temperatures, even winter-grade fuel may tend to wax. Therefore, if only summer-grade fuel is
available, or if winter-grade fuel is used at excessively low temperatures, the following percentages are recommended
(figure 2-6) for mixtures of diesel fuel and kerosene or regular-grade gasoline.
Figure 2-6. Fuel Mixture by Temperature.
2-15
