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VariZoom VZMX-TA User Manual

Vz-mx-ta mx trim adjuster accessory retrofit

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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.