TM  10-3930-643-34 TRANSMISSION TROUBLESHOOTING  AND  MAINTENANCE. 6-9. Transmission Oil Cooler. (Sheet 2 of 4) REMOVAL NOTE Tag all hose and tube assemblies before disconnecting to aid in installation. 1. 2. 3. 4. 5. Using a flat tip screwdriver, disconnect hose assemblies (1 and 2) from left side of engine. Using a 1-1/2" open end wrench, disconnect hose assemblies (3 and 4). Using a flat tip screwdriver, remove clamp (5), tube (6), clamp (7) and hose (8). Disconnect hose assembly (9). NOTE The  difference  between  oil  cooler (12) and oil cooler assembly (13) is removable clamps on the oil cooler assembly (13). Using a 1/2" socket and socket wrench handle, remove four nuts (lo), washers (11), oil cooler (12) or oil cooler assembly (13) and four washers (14). 6. Using two 3/4" open end wrenches, remove two nuts (15), washers (16), bolts (17) and clamps (18) from oil cooler assembly (13), if removed. Go to sheet 3 6-59