TM 10-3930-659-20 17-39.    HYDRAULIC RESERVOIR DRAIN VALVE AND LINE REPLACEMENT. This Task Covers: a.  Removal b. Installation Initial Setup: Equipment Conditions: Materials/Parts: • Hydraulic  reservoir drained  (see  LO 10- • Rags (Item 27, Appendix C) 3930-659-12). • One preformed packing • Conveyorized fork attachments removed from side of forklift truck (see References: paragraph 17-13). • Right engine upper sideshield opened (see •   LO 10-3930-659-12 TM 10-3930-659-10). •   TM 10-3930-659-10 Tools/Test Equipment: • General mechanic's tool kit (Item 44, Appendix F) • Adjustable wrench (Item 49, Appendix F) NOTE A   suitable   container   should   be   used   to   catch   any   draining hydraulic fluid.  Ensure that all spills are properly cleaned. a. REMOVAL 1. Loosen clamp (5) and remove hose (6) and clamp from hydraulic reservoir drain valve (7). 2. Remove hydraulic reservoir drain valve (7), connector (4), elbow (3), and preformed packing (2) from hydraulic reservoir (1).  Discard preformed packing. b. INSTALLATION 1. Install new preformed packing (2), elbow (3), connector (4), and hydraulic reservoir drain valve (7) on hydraulic reservoir (1). 2. Slide clamp (5) on hose (6) and install hose on hydraulic reservoir drain valve (7).  Tighten clamp. 17-118