Why Doesn the Forearm Roll Joint have Full Range of Motion?
This is most likely caused by the potentiometer not being aligned with the hydraulic actuator. To determine if the potentiometer is aligned properly; Ensure hydraulics are off and secured. Remove the hoses to the roll function at the manifold. (3A and 3B) Manually rotate the joint all to the hardtop in one direction. Establish communication with the controller and observe the position of the roll joint under the diagnose menu. Record the Actual value. Manually rotate the joint to the other hard stop and record the Actual value. The numbers should be within 100 counts of each other except the polarity will be opposite. If the numbers are not within 100 counts and of opposite polarity, then the potentiometer will need to be adjusted. Manually rotate the joint to its center position. There should be an equal range of movement clockwise and counter-clockwise to each hard stop. When the potentiometer is adjusted correctly, the Actual value should be 0000 +/- 100 counts. Adjustment of the po
