TM 10-3930-659-20 12-11.    CROSSOVER RELIEF VALVE-TO-STEERING CYLINDER HOSES REPLACEMENT (Con't). 3. Install two new preformed packings (2) and tee (3) on crossover relief valve (4). 4. Install hose (1) on tee (3) 5. Install two new preformed packings (5) and adapter (6) on crossover relief valve (4). 6. Install hose (7) on adapter (6). FOLLOW-ON TASKS: • Install right transmission side guard (see paragraph 14-7). • Install right and left side cab skirts (see paragraph 14-6). • Remove frame locking bar (see TM 10-3930-659-10). TA707574 12-34