UPPERSTRUCTURE / Pilot Shut-Off Solenoid Valve Remove and Install Pilot Shut-off Solenoid Valve 1. Put the matching marks on body (4) and solneoid (2). Clamp body (4) in a vise. Remove socket bolts (1) (2 used) from body (4). Remove solenoid (2) and O-ring (3) from body (4). : 4 mm 2. Remove plug (8) from body (4). Remove O-ring (7) from plug (8). : 6 mm 3. Remove spring (6) and spool (5) from body (4). W2-8-3