TM 10-3930-659-20 17-23.    CARRIAGE TILT CYLINDER HOSES AND LINES REPLACEMENT (Con't). 7. Remove hose (16) and preformed packing (15) from elbow (14).Discard preformed packing. 8. Remove elbow (14) and preformed packing (17) from locking control valve (13).Discard preformed packing. TA707660 17-71