TM 9-2320-209-10-1 FRAME 14 1. Using spanner wrench, turn left and take coupling (1) from pump delivery line discharge valve (2). 2. Put coupling (1) back into place in rear compartment (3). 3. Put dust covers (4) onto pump delivery line discharge valve adapter (2) and gravity delivery line suction valve adapter (5). Turn right to tighten. 4. Close rear compartment doors (6). 4-174