TM10-3930-660-20 18-10. SHUTTLE VALVE -  REPLACE  (Cont‘d) If more than one hydraulic line is to be removed, identify lines to assure proper installation. Use suitable container to catch any hydraulic oil that maty drain from  system. The shuttle valve is located on vehicle frame, forward of the transmission. 1. 2. 3. 4. DISCONNECT HYDRAULIC LINES. a. b. Tag three hydraulic lines the (1)  . Unscrew three hydraulic line fittings (2) at shuttle valve (3). CAP ALL OPEN HYDRAULIC FITTINGS (2). NOTE ORIENTATION OF SHUTTLE VALVE FOR USE DURING INSTALLATION. REMOVE TWO NUTS (4), TWO LOCKWASHERS (5), TWO BOLTS (6), TWO LOCKWASHERS (7), AND SHUTTLE VALVE (3). DISCARD LOCKWASHERS (5) AND (7). Grasp valve so it does not drop when mounting hardware is removed. 18-43