TM 10-3930-659-20 12-7. HYDRAULIC OIL RETURN TUBE REPLACEMENT. This Task Covers: a. Removal b. Installation Initial Setup: Equipment Conditions: Materials/Parts: • Frame locking bar installed (see TM  10-3930- •  Rags (Item 27, Appendix C) 659-10). •  Two preformed packings • Hydraulic  reservoir drained  (see  LO  10-3930- 659-12). Tools/Test Equipment: • Hydraulic oil return tube-to-forklift control valve hose and fittings removed (see paragraph 12-14). •  General mechanic’s tool kit (Item 44, Appendix F) • Hydraulic oil return tube-to-steering valve hose and •  Adjustable wrench (Item 49, Appendix F) fittings removed (see paragraph 12-16). • Hydraulic oil return filter-to-priority valve line and References: fittings removed (see paragraph 17-38). •  LO 13930659-12 •  TM 103930-659-10 NOTE A suitable container should be used to catch any draining hydraulic fluid.  Ensure that all spills are properly cleaned. a. REMOVAL 1. Remove hydraulic oil return tube (3) from adapter (2). 2. Remove adapter (2) and two preformed packings (4) from priority valve (1).  Discard preformed packings> TA707566 12-24