TM 10-3930-659-20 12-9. PRIORITY VALVE-TO-SECONDARYSTEERING MANIFOLD HOSE REPLACEMENT (Con't). 3. Remove hose (4) from adapter (7). 4. Remove adapter (7) and two preformed packings (6) from secondary steering manifold (5).  Discard preformed packings. b. INSTALLATION 1. Install two new preformed packings (6) and adapter (7) on secondary steering manifold (5). 2. Install hose (4) on adapter (7). 3. Install two new preformed packings (2) and adapter (3) on priority valve (1). 4. Install hose (4) on adapter (3). FOLLOW-ON TASKS: • Install right transmission side guard (see paragraph 14-7). • Install cab skirts (see paragraph 14-6). • Remove frame locking bar (see TM 10-3930-659-10). TA707570 12-29