DISASSEMBLY 1. Remove four screws (1) and washers (9) from oil pump (3). 2. Remove five screws (8) from front support (7). 3. Separate oil pump (3) from front support (7). 4. Remove pump drive gear (4), pump drive gear (5), and seal ring (6) from oil pump (3). Discard seal ring (6). 5. Remove oil seal (2) from oil pump (3). Discard oil seal (2). WARNING Main-pressure regulator and valve lockup springs are under spring compression. Do not remove retainer ring or lower pin until remover/installer is in place, as springs will fly out causing injury. 6. Install main-pressure regulator remover/installer on front support (7). Tighten screw of remover/ installer to compress spring stop (13) against spring (12). 7. Loosen remover/installer screw and remove retaining ring (14), spring stop (13), spring (12), and main-pressure regulator (11) from valve bore (15) of front support (7). 8. Remove main-pressure regulator remover/installer. 9. Compress spring stop (17) against spring (18). 10. Remove dowel pin (10), spring stop (17), spring (18), and lockup valve (19) from lockup valve bore (16) of front support (7). 0374 00-4 TM 9-2320-386-24-1-2 0374 00 TRANSMISSION OIL PUMP MAINTENANCE (Contd)