VariZoom VZMX-TA - Manual

VZ-MX-TA MX Trim Adjuster
Accessory retrofit
This device was conceived to improve
the performance of the ProLite,
standard Aviator, or BlackHawk arms
by allowing the operator to adjust arm
trim (horizontal orientation) to
compensate for the twisting of the vest
mount. The trim adjuster will
essentially allow you to ‘level’ the arm
so it will ride on a plane parallel to
the ground, preventing the tendency of
the arm to drift away and making it
easier to control, which in turn allows
you to focus on the finer points of
operation.
You will have to mount the trim adjuster directly to the vest mount
where the arm is normally pinned (ProLite, Aviator) or the arm bridge is
pinned (BlackHawk - it will replace the arm bridge). The small knob on
the face can be tightened to eliminate any play between the trim adjuster
and the vest mount.
For the ProLite and Aviator, you will have to replace the existing lower
arm linkage with the supplied ‘Y’ shaped
linkage. Simply loosen and remove the set
screw on the existing linkage and slide the
shaft out, taking care not to lose the
thrust bearing assembly (looks like 3
washers). Replace the old linkage with the
new one, making sure to put the bearing
assembly in the same spot as before (on top).
Slide the shaft through the arm, bearing
assembly, and linkage, and use the set screw from the old linkage to fix
the new linkage to the shaft, tightening the screw onto the flat spot of
the shaft.
For the BlackHawk, you will have to remove
the downward-facing stainless steel post on
the lower arm linkage. To do this, you will
need to knock out the 2 roll pins that hold
the post in place. You will need a hammer
and a small rod or center punch (<0.12”) to
knock the pins out.