TM 1-1520-240-BDb.Replace.Replace damaged tubing with highpressure hose assemblies. This also can beaccomplished using AN flared assemblies with MSflareless installation and vise-versa, providingappropriate AN to MS unions are available. Usehydraulic repair kit when applicable.c.RepairUsingUnionFitting. Repair damagedarea using a union fitting. Bulkhead fittings can be usedwhere slightly larger repairs are necessary. AN or MSunions may be used providing tubing is preparedappropriately.d.RepairUsingUnionAndTube. Repair thedamaged area using union and tubing when thedamaged area exceeds the use of one union alone. ANand MS plumbing may be used providing tubing isprepared appropriately (Figure 7-2).CAUTION•An MS flareless sleeve cannotadequately bite into hard surfaced,thin wall 21-6-9 (301) stainless steeltubing. This combination isunreliable and undesirable.•After tubing has been cut, all effortsshould be made to flush any residuefrom tube end. Rush with anyavailable fluid. If end connectionsare inaccessible, momentaryactivation of the system will suffice.Figure 7-2. Tubing Repair (Union)7-4
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