TM10-3930-660-20 18-6. MAIN CONTROL VALVE ASSEMBLY - ADJUST/REPLACE (Cont'd) 3. REMOVE MOUNTING HARDWARE. Main control valve weighs 60 pounds. When performing the following procedure, grasp the valve so it does not drop when fasteners are removed. a. b. Remove three nuts (6), three lockwashers (5), and three capscrews (4) that secure valve. Discard lockwashers (5). Remove  valve. INSTALLATION 1.  INSTALL  VALVE. a. Position valve on compartment wall. Apply Loctite 242 to threads of capscrews  (4). b. c. d. Place a capscrew (4) through compartment wall and valve flange  (7).   Place a new lockwasher (5) and a nut (6) on end of bolt. Hand tighten nut. Place remaining two capscrews through compartment wall and valve flanges (8), (9) and secure with new lockwashers (5) and nuts (6). Tighten all nuts (6) securely with 2. 3. wrench. REMOVE CAPS FROM HOSES AND TUBE. Remove caps from hydraulic hoses (1) and tube (2). CONNECT HYDRAULIC HOSES AND TUBE. Connect thirteen hydraulic hoses (1) and one tube (2) to fittings (3) as tagged. 18-19