UPPERSTRUCTURE / Control Valve 1 - Cap 19 - Pilot Seat 36 - Cap 52 - O-Ring (4 Used) 2 - O-Ring 20 - Spring 37 - O-Ring 53 - Seat (4 Used) 3 - Piston 21 - Spring 38 - Cap 54 - Spring (4 Used) 4 - Sleeve 22 - Piston 39 - O-Ring 55 - Piston (4 Used) 5 - Backup Ring (2 Used) 23 - O-Ring (4 Used) 40 - Spacer 56 - Main Poppet (4 Used) 6 - O-Ring (2 Used) 24 - Backup Ring (10 Used) 41 - O-Ring 57 - Sleeve (4 Used) 7 - Poppet 25 - Main Poppet 42 - Spring 58 - O-Ring 8 - Spring 26 - Sleeve 43 - Check Valve 59 - Cap 9 - Spring Seat 27 - O-Ring (5 Used) 44 - Cap 60 - O-Ring 10 - Spring 28 - Backup Ring (5 Used) 45 - O-Ring 61 - O-Ring (2 Used) 11 - Pilot Poppet 29 - O-Ring (5 Used) 46 - Lock Nut (4 Used) 62 - Flange 12 - Lock Nut 30 - Cap 47 - Adjusting Screw (4 Used) 63 - Socket Bolt (4 Used) 13 - Backup Ring 31 - O-Ring (2 Used) 48 - O-Ring (4 Used) 64 - Housing (5-Spool Side) 14 - O-Ring 32 - Backup Ring (2 Used) 49 - Spring (4 Used) 15 - Sleeve 33 - Spring (2 Used) 50 - Pilot Poppet (4 Used) 16 - O-Ring 34 - Check Valve (2 Used) 51 - Spring (4 Used) W2-5-41