TM  10-3930-643-34 ENGINE,  FUEL,  EXHAUST  AND  COOLING  TROUBLESHOOTING  AND  MAINTENANCE. 4-9. Oil Cooler. (Sheet 2 of 5) REMOVAL 3. 4. 5. Using  a  flat  tip  screwdriver,  loosen four clamps (12) and remove hose assembly (l). Using a 9/16” socket and socket wrench handle, remove four bolts (2), lock washers (3), washers (4) and oil cooler (5) from left side of engine. Using a gasket scraper or putty knife, remove and discard two seals (6). Remove two connectors (7) and four preformed  packings  (8). Discard preformed  packings  (8). Using a 9/16” socket and socket wrench handle, remove plugs (9 and 10) from oil cooler (5). Go to sheet 3 4-69