ST&G 1323 AP Instructions Manual page 9

Polycentric 5 bar pneumatic knee joint
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8.2 Stance Flexion Adjustment
8.3
Extension Assist Adjustment
8.4 Pyramid Head Position Adjusting
Note: Mark/indicate pyramid orientation. Remove pyramid bolt and apply thread
locker, and torque bolt 18Nm. Tighten set screw to help prevent rotation.
5mm Stance flexion adjustment screws are
located on the anterior body of the knee.
Turning both screws clockwise decreases
the 5th axis motion, reducing the stance
flexion angle. Anti-clockwise will increase
5th axis motion, increasing the stance
flexion angle. Adjustments need to be
symmetrical!
Adjust screw with 6mm wrench:
Clockwise to increase extension assist
Anti-clockwise to reduce extension assist
NOTE: Excessive anti-clockwise from factory
setting has no effect. Screw should not
protrude out of housing.
Note: Loosen set screws prior to
adjusting.
Note: Tighten set screws
after adjusting.
Loosen screw with 2.5mm hex wrench.
Loosen Pyramid bolt with
8mm hex wrench.
Rotate to desired orientation
And retighten bolt.
NOTE: Stance Flexion set screws
have been eliminated. The
threaded holes remain, but will not
contain a screw.
Important!
adjustments to Stance
Flexion Bumper screws need to be
symmetrical! Apply thread locker to
screws one at a time to prevent screw
backing out.

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