TM 9-2320-209-20-3-3 b. Removal of Inner Manhole Cover. FRAME 1 1. Using pliers, take out and throw away two cotter pins (1). Slide out pins (2). NOTE Cover (3) may need to be turned left or right before pulling it all the way out. 2. Grab yoke (4) and pull out cover (3). 3. Pull out rubber seal (5). END OF TASK 18-344