TM 9-2320-209-20-3-1 c. Replacement. 1. 2. 3. 4. WARNING Dry cleaning solvent is flammable. Do not use near an open flame. Keep a fire extinguisher nearby when sol- vent is used. Use only in well-ventilated places. Failure to do this may result in injury to personnel and damage to equipment. NOTE Before installing new seal (1), clean mating surface of flange (2) and cover (3) using solvent. Put new seal (1) on transfer output cover flange (2) and aline four holes. Put cover plate (3) over seal (1) and aline four holes. Screw four bolts (4) with lockwashers (5) through cover plate (3) and tighten, using 9/16-inch wrench. Screw air vent valve (6) into cover plate and tighten, using 7/16-inch wrench. NOTE Follow-on Maintenance Action Required. Replace intermediate and rear tunnel. Refer to Part 3, para 18-5. END OF TASK 9-52