TM 55-1930-209-14&P-19 Section II Table 18-1.  Preventive Maintenance Checks and Services for Double Drum Winch 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 DOUBLE DRUM WINCH 1 Engine Lubricating   a. Check oil level. Add (OEHDO-30 (MIL-L- Oil 21040)) oil to full mark on dipstick as nec- essary. If engine has been in operation, allow 20 minutes for oil to drain down to the crankcase before adding more oil. b. Change oil after every 150 hours of oper- ation. c. Replace strainer and filter every 500 hrs. 2 Engine Lubrication   Check all lubricating lines for leaks. Notify  Class III leaks. Oil Lines shift leader or bargemaster for corrective action. 3 Engine Cooling System WARNING At operating temperatures, engine coolant is hot and under pressure. It also contains alkaline materials harmful to eyes and skin. To avoid personal injury, check coolant level only when engine is stopped and filler cap is cool enough to be touched with a bare hand. Should engine coolant come in con- tact with eyes or skin, immediately flush affected area with clean water and seek medical assistance if necessary. a. Check coolant level and add coolant as required. b. Check all water connections and hoses Class III leaks. for damage or leaks. Tighten, replace or repair as necessary. 18-3