TM9-2815-202-34 4-39.   OIL   COOLER   ASSEMBLY   REPAIR   (Cont) CAUTION Seal ring grooves must be free of burrs and foreign material or damage to seals will occur. (6) Install first seal (26) into seal ring groove at bottom end of lower oil cooler shell (33). Lubricate  seal  with  engine  oil. NOTE Oil cooler shell and tube bundles are marked with numbers. Match and a line numbers when installing  tube  bundles. (7) (8) (9) (10) (11) (12) Insert lower tube bundle (27) into end of lower oil cooler shell (33) without any seal top seal ring groove. Attach puller (23) to oil cooler shell and place bar tool (24) on Carefully press tube bundle past top seal ring groove. (26) in tube. Remove puller (23) and bar tool (24). Install seal (26) into top seal ring groove of oil cooler (5). Lubricate seal with engine oil. Invert oil cooler shell (5). Using puller (23) and bar tool (24), carefully press tube bundle (27) until ends are flush with shell. Repeat steps (5) thru (9) for installing upper tube bundle (25). Install gasket (20) and front cover (19) to oil cooler assembly (5) securing with ten bolts (18) ten Iockwashers (2). Torque bolts to 30-35 Ib-ft (41-47 N-m). Install gasket (22) and rear cover (21) to oil cooler assembly (5) securing with ten bolts (20) and ten Iockwashers (2). Torque bolts to 30-35 Ib-ft (41-47 N-m). 4-220