· Be sure all parts of the steering control unit (SCU) are clean and free of dirt and debris.
Clean all parts with cleaning compound and air dry or use cleaning cloth ONLY to clean
dry parts. Replace any parts that have scratches or burrs that could result in leakage.
· Put a thin coat of clean lubricating oil on O-rings prior to installation.
Install check ball retainer (Figure 10, Item 5) in control housing (Figure 10, Item 6). Be sure the retainer is
straight and not tilted in the bore.
Install check ball (Figure 10, Item 4).
Install two new O-rings (Figure 10, Item 3) and (Figure 10, Item 2) in their original location on the check ball
seat (Figure 10, Item 5).
Install the check ball seat (Figure 10, Item 1) in center of control housing (Figure 10, Item 6), using an 1/8 in.
-24 machine screw.
Figure 10. Steering Control Unit (SCU) Assembly.