TM 55-1930-209-14&P-19 Table 18-1.  Preventive Maintenance Checks and Services for Double Drum Winch (Continued) B - Before D - Daily Q -  Quarterly D - During W - Weekly S -  Semiannually A - After M - Monthly A -  Annually INTERVAL ITEM PROCEDURES EQUIPMENT ITEM TO BE CHECK FOR AND HAVE IS NOT READY/ NO. INSPECTED REPAIRED OR ADJUSTED AVAILABLE IF B   D   A   D  W  M   Q   S   A AS NECESSARY 14 Air Cleaners a. Remove dirty oil and sludge from oil bath cups after each 8 hours of operation. b. Wash cups and elements with clean fuel oil and refill cups with oil of same grade and viscosity as engine lube oil. Increase frequency of cleaning in dusty, rainy or snowy conditions. 15 Overspeed Lubricate overspeed governor with five or Governor six drops of engine oil. Avoid excesive lubri- cation. Do not lubricate governor while engine is in operation. 16 Throttle Controls Lubricate throttle control mechanism with all purpose grease. Use no.2 grade at temper- atures above 30' F. Use no.1 grade at tem- peratures below 30' F. 17 Drive Belts Check tension on all drive belts so that a firm Belts cracked. push with thumb will depress each belt at least 1/2 inch but no more than 3/4 inch. If one belt from a set needs to be replaced, replace the complete set. 18 Tachometer Lubricate tachomeer drive with an all- Drive purpose grease at the grease fitting. At tem- peratures above + 30°F (-1 'C) use a No. 2 grade grease. Use a No. 1 grade grease below this temperature. 19 Turbocharger a. Inspect mountings, intake and exhaust ducting and connections for leaks. b. Check oil inlet and outlet lines for leaks or Class Ill leaks. restrictions to air flow. c. Check for unusual noise or vibration and, if excessive, notify shift leader or barge- master for corrective action. 18-6