TM 9-2320-209-20-3-1 b. Replacement of Switch, PN 7064588. 1. Screw stoplight switch (1) into air hydraulic cylinder (2) and tighten, using 1-inch open end wrench. 2. Join connector shell (3) to stoplight switch (1) by pressing in and turning right to lock. NOTE Follow-on Maintenance Action Required: 1. Bleed brake hydraulic system. Refer to Part 2, para 13-15 and 13-16. 2. Set MAIN light switch to STOPLIGHT and check stoplight operation by pressing brake pedal several times. END OF TASK 7-260