TM 10-3930-659-20 12-13.    SECONDARY STEERING MANIFOLD-TO-STEERING VALVE HOSE REPLACEMENT (Con't). 3. Remove hose (4) from tee (6). 4. Remove tee (6) and two preformed packings (5) from steering valve (7).  Discard preformed packings. b. INSTALLATION 1. Install two new preformed packings (5) and tee (6) on steering valve (7). 2. Install hose (4) on tee (6). 3. Install two new preformed packings (2) and adapter (3) on secondary steering manifold (1). 4. Install hose (4) on adapter (3). FOLLOW - ON TASKS: • Install priority valve-to-steering valve hoses and fittings (see paragraph 12-10). • Install cab skirts (see paragraph 14-6). • Remove frame locking bar (see TM 10-3930-659-10). TA707579 12-39