TM 10-4320-303-13Figure 2-56. Pneumatic Coupler Installation.WARNINGStand clear of receiver during displacement process. Hoseline jumps when ballarrives at receiver. Failure to obey this warning may result in personal injury.l. Connect pneumatic coupler (8) to pneumatic coupler (5) on end cap (6). Pressurize hoseline to 80 to90 psi. Displacement ball (4) will be forced through hose, displacing any residual water. A soundwill be heard when the displacement ball (4) reaches receiver (Figure 2-52, 4).NOTE· If ball gets stuck, straighten kinks in hoseline.· It may be necessary to increase air pressure. DO NOT exceed 150 psi.m. Shut off compressor when displacement ball (Figure 2-56, 4) reaches receiver (Figure 2-55, 3).n. Open snaplock coupling (Figure 2-55, 7) connecting two reducers (5 and 6). Pull snaplock coupling(7) back and separate two hinged coupling halves of snaplock coupling (7). Set snaplock coupling(7), displacement ball (Figure 2-56, 4), and modified reducer (Figure 2-55, 6) aside.o. Remove grooved-end pipe quick disconnect coupling clamp (1) (para 2.3.3.1) connecting unmodifiedreducer (5) to hoseline segment (2).2-92
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