TM 10-3930-669-20 17-10.  MAIN HYDRAULIC SYSTEM HOSE AND TUBE REPLACEMENT (CONT). (l) Remove hose (23) from fitting (25). (m) Remove hose (21) from fitting (26). (n) Remove hose (13) from fitting (27). (o) Remove hose (15) from fitting (28). (p) Remove hose (17) from fitting (29). (q) Remove hose (19) from fitting (30). (r) Remove hose (5) and preformed packing (31) from manifold (32). Discard preformed packing. (s) Remove hose (8) and preformed packing (33) from manifold (32). Discard preformed packing. (2) Installation. (a) Install preformed packing (33) and hose (11) on manifold (32). (b) Install preformed packing (31) and hose (8) on manifold (32). (c) Install hose (19) on fitting (30). (d) Install hose (17) on fitting (29). 17-48