Section IV. OPERATION UNDER UNUSUAL CONDITIONS TM 9-2320-361-10 2-33. SPECIAL INSTRUCTIONS a. General. Special instructions for operating and maintaining vehicles under unusual conditions are included in this section. Unusual conditions are extreme temperatures, humidity, and/or terrain. Special care with cleaning and lubrication must be taken in order to keep vehicles operational when operating under unusual conditions. b. Cleaning. Refer to para. 2-9 for cleaning instructions and precautions. c. Lubrication. (1) Refer to LO 9-2320-209-12-1 for proper lubricating instructions. (2) Service intervals in LO 9-2320 -209-12-1 are for normal operating conditions. Reduce intervals to more frequent servicing when operating under unusual conditions. d. Driving Instructions. (1) FM 21-305 contains special driving instructions for operating wheeled vehicles. (2) AR 600-55 contains instructions on driver selection, testing, and licensing. (3) FM 9-207 contains instructions on vehicle operation in extreme cold of 0°F to -65°F (-17°C to -54°C) or below. Other documents with information on cold weather vehicle operation are: (a) FM 31-70 Basic Cold Weather Manual. (b) FM 31-71 Northern Operations. (c) FM 90-6 (HTF) Mountain Operations. e. Special Purpose Kits. Paragraphs describing special purpose kits for operation under unusual conditions can be found in section V of this chapter. f. Reporting Material Failure. Report failure of vehicle, body equipment, or kits on Standard Form 368 (Quality Deficiency Report — Equipment Improvement Recommendations) as presented by DA Pam 738-750 and as stated in para- graph 1-5 of this manual. 2-34. OPERATION UNDER UNUSUAL CONDITIONS INDEX PARA. PARA. TITLE PAGE NO. 2-35. Operation in Extreme Cold 2-182 2-36. Operation on Ice or Snow 2-184 2-37. Operation in Extreme Heat 2-185 2-38. Operation in Dusty or Sandy Areas 2-187 2-39. Operation in Rainy or Humid Conditions 2-188 2-181 NO.