TM 10-3930-669-20 17-10.  MAIN HYDRAULIC SYSTEM HOSE AND TUBE REPLACEMENT. This task covers: a. Mast Hydraulic Hose Replacement b. Pivot Arm Hose and Tube Replacement c. Lower Mast Hose and Tube Replacement d. Tilt Cylinder Hose Replacement e. Shift Cylinder and Umbilical Hose Replacement f. Inner Umbilical Hose Replacement g. Stack Valve Low Pressure Hose and Tube Replacement h. Stack Valve/Priority Valve/Hydraulic Pump Hose Replacement i. Steer Hose and Tubes Replacement INITIAL SETUP Tools and Special Tools Tool Kit, General Mechanic's: Automotive (Item 1, Appendix B) Wrench, Torque (O to 175 lb-ft [0-237 N•m]) (Item 2, Appendix B) Wrench, Torque (0-60 N.m) (Item 12, Appendix B) Materials /Parts Ties, Cable (Item 4, Appendix C) Cap and Plug Set (Item 5, Appendix C) Rags, Wiping (Item 19, Appendix C) Solvent, Drycleaning (Item 20, Appendix C) Tags, Identification (Item 21, Appendix C) Packing, Preformed (2) Packing, Preformed (2 Packing, Preformed Materials/Parts - Continued Packing, Preformed (2) Packing, Preformed Packing, Preformed Packing, Preformed Packing, Preformed Packing, Preformed Packing, Preformed Packing, Preformed Packing, Preformed Equipment Condition Wheels chocked (TM 10-3930-669-10) Hydraulic reservoir drained (LO 10-3930-669-12) Mast pivoted 90°  (TM 10-3930-669-10) NOTE ·    This procedure shows locations of hydraulic hoses on the vehicle.  It will never be necessary to remove all hoses at one time. ·    Hydraulic hoses have been divided into three logical groups: hoses and tubes associated with the mast/pivot and shift assembly, hoses and tubes running between the mast/pivot and shift assembly and the forklift, and hoses and tubes within the forklift itself.  These groups are split in the task where the callouts go back to (1). ·    Tag and mark all lines, hoses, and fittings prior to removal. ·    Cap and plug all lines, hoses, and fittings as disconnected. ·    Inspect all hoses, lines, and fittings for cracks, bends, nicks, dents, stripped threads, and cuts.  Replace all damaged parts. ·    Remove cable ties as required. 17-35