Product Overview

Table Of Contents

Table-8 Balljoint Positioning Actuator and Damper Crank Arms with 90 Degree

Rotation Actuators.

Figure-34 Proper Balljoint Position on Crank Arm.

5. With the actuator powered, manually position the actuator to the position that is required

for the closed position of the damper. Rotate the damper to its midstroke position.

Referring to

Figure-36, install the crank arms on the damper shaft and the actuator so

that crank arms are parallel. The crank arm on damper shaft should be secured to the

shaft and the crank arm on the actuator should be free to rotate.

6. Attach the push rod to the ball joint connectors on both crank arms and tighten the ball

joint screws only thumb tight.

7. Rotate by hand the crank arm on the actuator to drive the linkage and the damper shaft

through its full stroke to ensure proper damper action.

8. Return the damper to its closed position and tighten to secure the actuator crank arm.

9. While pushing the damper closed, tighten the ball joint screws to secure the damper

rod.

10. Run the actuator back and forth through its full stroke and check for proper damper and

linkage operation. Adjust the linkage if required.

Caution: If the crank arm does not provide proper travel, reset the linkage. Never attempt

to turn the actuator shaft with a wrench or a crank; this may damage the actuator.

Figure-35 Typical Actuator Mounting Positions.

Desired Damper Rotation

Balljoint Position Actuator

Crank Arm

Balljoint Position Damper

Crank Arm

90° End of Slot (3-1/8") End of Slot (3-1/8")

80° 2-3/4" 3"

70° 2-1/2" 3"

60° Prick Point (2-1/4") End of Slot (3-1/8")

123

Prick Point

Slot Provides Adjustment

From 7/8" to 3-1/8"