TM 10-3930-659-20 12-17.    SECONDARY STEERING PUMP-TO-SECONDARY STEERING MANIFOLD HOSE REPLACEMENT (Con't). 3. Install two new preformed packings (2) and adapter (4) on secondary steering manifold (1). 4. Install hose (3) on adapter (4). FOLLOW-ON TASKS: • Install cab skirts (see paragraph 14-6). • Close left engine upper sideshield (see TM 10-3930-659-10). • Remove frame locking bar (see TM 10-3930-659-10). TA707588 12-49