Steering Control Unit (SCU)
Remove & Install Steering Control
Unit (SCU) 4312-010
Turn the battery disconnect switch to the OFF position
and release hydraulic system pressure (16-11).
Remove two bolts (2), and remove cover (1) from
Remove four bolts (6), and remove cover (5) from the
Remove three bolts (4) that fasten console (3) to the
column, and move the console out of the way.
Put identification marks on four hoses (7) for installation
purposes. Disconnect four hoses (7) from steering
control unit (9). Cap and plug immediately.
While holding steering control unit (9), remove four bolts
(10) that fasten the steering control unit and steering
column (8) to the column. Remove the steering control
unit from the splines on the steering column.
NOTE: For installation of the steering control unit (SCU),
revere the removal steps.
Disassemble & Assemble Steering Control
remove steering control unit (SCU)
Be sure the outside of the steering control unit is
thoroughly clean and free of dirt and debris prior to
disassembly. Make alignment marks on the valve body
to aid in proper assembly.
Remove seven cap screws (1).
Remove end cap (2).
Remove seal (3) from end cap (2). Check the seal for
damage or wear and replace if necessary.