UPPERSTRUCTURE / Control Valve 1 - Socket Bolt (13 Used) 7 - Spring (4 Used) 13 - Check Valve 19 - Spool (Bucket) 2 - Cover 8 - Spool 14 - Spring 20 - Spool 3 - O-Ring (8 Used) 9 - Spool (Arm 2) 15 - Spacer 21 - Spool (Travel) 4 - Cap (4 Used) 10 - Spool 16 - O-Ring 22 - Housing (4-Spool Side) 5 - Spring Guide (8 Used) 11 - Spool (Boom 2) 17 - Backup Ring 23 - Cover 6 - Sleeve (4 Used) 12 - Spool 18 - Cap 24 - Cover W2-5-53