TM 10-3930-669-20 17-10.  MAIN HYDRAULIC SYSTEM HOSE AND TUBE REPLACEMENT (CONT). e.  Shift Cylinder and Umbilical Hose Replacement. (1) Removal. (a)   Sideshift mast assembly 90° (TM 10-3930-669-10). (b)   Remove two screws (1), washers (2), and clamp (3) from pivot and shift assembly (4). (c)   Remove hose (5) and preformed packing (6) from manifold (7).  Discard preformed packing. (d)   Remove hose (8) and preformed packing (9) from manifold (7).  Discard preformed packing. (e)   Remove hose (10) and preformed packing (11) from manifold (7). Discard preformed packing. (f) Remove hose (12) and preformed packing (13) from manifold (7). Discard preformed packing. 17-46