TM 10-3930-659-34 5-9. TRANSMISSION CONTROL VALVE MAINTENANCE (Con’t). CAUTION Use care when removing transmission control valve from transmission assembly.  Springs, detent ball, and detent pin may fall out of transmission assembly, damaging parts. 5. Remove  nut  (18),  transmission  control  valve  (3),  gasket  (14),  plate  (13),  and  gasket  (12)  from  transmission assembly (8).  Discard gaskets. 6. Remove  spring  (20),  detent  ball  (19),  ring  (15),  check  valve  ball  (16),  and  spring  (17)  from  transmission  control valve (3). 7. Remove detent pin (10), detent ball (11), and two springs (9) from transmission assembly (8). 8. If damaged, remove threaded stud (21) from transmission assembly (8). 5-64