TM 9-2320-209-20-3-3 d. Repair of Outer Manhole Cover. FRAME 1 1. Check that cover (1) has no cracks, dents, holes or wear. If cover is damaged, get a new one. 2. Check that gasket (2) has no cracks, breaks or wear. If gasket is damaged, get a new one. END OF TASK 18-347