TM 10-5411-231-13&P CARGO BED COVER (CBC) HMMWV, TYPE I 0021 00 CBC SHELL ASSEMBLY LIFTING RING REPAIR a.    Using 1/2” combo wrench outside and 1/2” deep socket wrench inside CBC, remove two screws, lock washers and backing plate from inside CBC.  Retain the backing plate for installation of the new ring. b.    Remove U-bolt, flat washer and ring from outside.        WARNING All chemical materials used in this process are flammable and toxic.  Use only in well ventilated areas. Avoid prolonged or repeated breathing of vapors or contact with skin. c.    Clean old sealant from the screw holes in the shell with acetone.  Allow it to dry. d.    Use sealing compound (P/N 700145) in and around the screw holes.    e.    Install the new lifting rings (P/N 700407), U-bolts (P/N 700406) and attaching hardware.  Tighten securely. END OF TASK 0021 00-5