TM 10-3930-659-34 5-9.  TRANSMISSION CONTROL VALVE MAINTENANCE (Con’t). CAUTION Cover  is  under  spring  tension.    Use  care  when  removing  cover  from  valve  block  not  to  damage parts. 8. Remove four short screws (56), long screws (57), cover (40), and gasket (41) from valve block (31).  Discard gasket. NOTE Note the number and thickness of washers when removing to aid during assembly. 9. Remove spring (47), washer (48), and piston (49) from valve block (31). 10. Remove spring (45) and piston (46) from valve block (31). 11. Remove piston (55), needle roller (54), bushing (53), spring (52), bushing (42), piston (43), two  springs  (44  and 51), and washer (50) from valve block (31). 5-66