TM 9-2815-225-34&P 3-42.  OIL COOLER REPAIR (Contd) LOCATION/ITEM ACTION REMARKS d.  Assembly NOTE   Perform steps 24 through 31 for M915/Big Cam I only.   Perform steps 32 through 39 for M915A1/Big Cam III only. 24. Filter element (6) Install as follows: Use OE/HDO 30 lubricating oil. a.  Lubricate new preformed packing (5).  Using an appropriate mandrel, place preformed packing (5) in groove at bottom of housing (12).  Ensure preformed packing (5) is fully seated, not twisted, and is free of cuts and nicks. b.  Carefully push filter element (6) Do not fully seat filter element in housing (12), using aligning (6). marks on housing (12) and filter element (6). c.  Press second new preformed packing (5) around top of filter element (6) with equal pressure around preformed packing (5) circumference.  Carefully seat filter element (6). d.  Install two retaining rings (4) on preformed packing (5) and housing (12). 25. New gasket (11), cover (3), Install on housing (12). Tighten screws (1) and (9) to bracket (2), two screws (1), 30-35 lb-ft (41-48 Nm). four lockwashers (8), and screws (9) 26. New gasket (13), cover Install on housing (12). Tighten screws (14) to 30-35 lb-ft (15), six new lockwashers (41-48 Nm). (8), and screws (14) 3-230