TM 10-6640-239-13 3-20 Section IV.  PREPARATION FOR STORAGE AND SHIPMENT Alphabetical Index Paragraph Title Paragraph Air Shipment ..................................................................................................................................................... 3-8e Introduction....................................................................................................................................................... 3-8 Preparation for Shipment .................................................................................................................................. 3-8d Prior to Placing Unit in Storage ........................................................................................................................ 3-8b Storage Length and Readiness........................................................................................................................... 3-8a Storage Site Selection........................................................................................................................................ 3-8c 3-8. INTRODUCTION. This section contains information on administrative storage procedures.  If additional information is required, refer to TM 740-90-1. a. Storage Length and Readiness.  Placement of equipment in administrative storage shall be for short periods of time (1 to 45 days) when a shortage of maintenance efforts exists.  Items shall be in mission readiness within 24 hours or within the time factors as determined by directing authority.  During the storage period, appropriate maintenance records will be kept. b. Prior to Placing Unit in Storage.  Before placing equipment in administrative storage, current maintenance services and Preventive Maintenance Checks and Services (PMCS) evaluations shall be completed, shortcomings and deficiencies shall be corrected, and all Modification Work Orders (MWO’s) shall be applied.  Drain water from piping as follows (Refer to figure 2-9 for location of drain valves): CAUTION Failure to drain water from piping in climates below freezing may cause piping to develop cracks and leak.  Always drain piping of water. NOTE Draining may  be  accomplished  quickly  by  applying  slight  air  pressure  to  supply and return lines. 1. Remove two camlocks from under trailer. 2. Open water tank drain valve. 3. Open water system drain valve. 4. Open return water drain valve. 5. Open water pump drain valve 6. Open pump suction drain valve 7. Open water supply drain located in laboratory next to sump tank. 8. Open sump tank drain in located in laboratory next to sump tank. 9. Open water supply drain in located in laboratory next to hot water tank. 10.   Open spigot in sink.