STANDARD OPERATING INSTRUCTIONS NO. 2 MAINTENANCE AND OPERATION INSTRUCTIONS FOR POL FACILITIES PARRY ISLAND DO NOT USE WOOD EXCELSIOR. To repack: Close inlet and outlet valves. Drain water from sump. Drain remaining fuel into tank or to dry well. Remove head flange and grid assembly. Remove old filter and inner grid, Clean out sediment and wood fiber. Insert new packing. NOTE: The amount of packing supplied by the manufacturer is the correct amount for the unit. If there is any packing left over or if the space is not entirely filled, remove the packing and repack, The packing should be installed or inserted in layers of 4 inches to 6 inches until allof it is in position. The packing must be placed evenly throughout the dehydra- tor; otherwise "channelling" will take place and the fuel will not be properly dehydrated. Under no circumstances should there be any open spaces after the packing has been placed, Replace front grid assembly, head gasket, and head, Use a suitable sealer on the gasket to assure a tight fit. 2-9