Adjusting old style rotation (1993 – 2003)

1. This view is the area under the head end of the pelvic cushion. The pelvic drop version is pictured.

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2. Check the rotation pivot (yoke) casting to make sure it is bound very tightly between the chrome lock collar (A) and the collar that is welded to the bottom side of the crossbar (B). If they have shifted apart then loosen the set screw on the bottom of the cross bar, clamp the three parts together as tight as possible, and tighten the screw again very tightly.

3. To increase tension on the lock mechanism: Adjust the two long set screws (C). Use a 7/16″ open wrench loosen the lock nut (D) at the end of the set screw while you hold an 1/8″ hex wrench in the end of the set screw.

4. Use the hex wrench to turn the set screw 1/4 turn and check the tension on the locking handle. Adjust to a tension that is satisfactory to you.

5. Tighten the lock nuts.