TM 9-2910-226-34 Figure 3-164. Fuel injection pump on test stand showing nozzle tester hook-up. e. Improvise a manifold composed of a 3/8 in. flare tube to ¼ in. pipe 45-degree elbow (A, fig. 3- 165), a ¼ in, pipe coupling (B), and a ¼ in. pipe to ¼ in. flare tube adapter (C). A Elbow, 45-degree, 3/8 in. flare tube to 1/4 in, pipe B Coupling, 1/4 in, pipe C Adapter, 1/4 in, pipe to 1/4 in. flare tube Figure 7-165. Fuel injection pump on test stand shouting improvised manifold for nozzle tester. 3-96