TM 10-3930-669-20 h.  Stack Valve/Priority Valve/Hydraulic Pump Hose Replacement. (1) Removal. (a) Remove hose (50) from 45° elbow (51) and elbow (52). (b) Remove hose (53) from two 45° elbows (54 and 55). (c) Remove hose (56) from two elbows (57 and 58). 17-59

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