TM 10-3930-659-20 17-18.    HYDRAULIC RESERVOIR-TO-MAIN HYDRAULIC PUMP LINE REPLACEMENT. This task covers: a. Removal b. Installation INITIAL SETUP: Equipment Conditions: Materials/Parts: •    Parking brake set (see TM 10-3930-659-10). • Rags (Item 27, Appendix C) •    Frame locking bar installed (see TM 10-3930- • One preformed packing 659-10). Tools/Test Equipment: •    Hydraulic reservoir drained(see LO 10-3930- • General mechanic’s tool kit (item 44, Appendix F) 659-12). References: •    Left engine upper sideshield opened (see TM 10- 3930-659-10) •    Left transmission side guard removed (see para- • LO 10-3930-659-12 graph 14-7). • TM 10-3930-659-10 •    Left side cab skirt removed (see paragraph 14-6). NOTE A  suitable  container  should  be  used  to  catch  any  draining  hydraulic  fluid. Ensure that all spills are properly cleaned. a. REMOVAL 1. Loosen two clamps (5), and remove hose (6) and clamps from hydraulic reservoir (4) and main hydraulic pump line (7). 2. Loosen two clamps (8). 3. Remove four screws (3), main hydraulic pump line (7), and preformed packing (2) from main hydraulic pump (1) and hose (9).Discard preformed packing. b. INSTALLATION 1. Install new preformed packing (2) and main hydraulic pump line (7) on hose (9) and main hydraulic pump (1) with four screws (3). 2. Tighten two clamps (8). 3. Position hose (6) and two clamps (5) on main hydraulic pump line (7) and hydraulic reservoir (4).Tighten clamps. 17-60