UPPERSTRUCTURE / Control Valve Disassemble Boom Anti-Drift Valve 31. Remove socket bolts (6) (4 used). Remove body (40), O-rings (13), (78) and (77) from housing (1). : 8 mm 32. Remove spring (76) and poppet (75) from housing (1). Disassemble Bypass Shut-Out Valve 33. Remove socket bolts (6) (2 used). Remove flange (107) and O-ring (4) from housing (1). : 8 mm 34. Remove spring (106) and spool (105) from housing (1). 35. Remove socket bolts (104) (4 used). Remove cap (103) and O-ring (102) from housing (1). : 8 mm 36. Remove plugs (8) (3 used) from housing (1). : 8 mm W2-5-15