TwinTurbo.NET: Nissan 300ZX forum - 9V battery did the trick.
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Subject 9V battery did the trick.
     
Posted by zquikone on March 03, 2021 at 2:25 PM
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In Reply To How to test the actuator on heater core valve? posted by zquikone on March 01, 2021 at 07:57 PM
     
Message Since all my gears were intact, the actuator obviously had other problems. The prongs on the large gear running across the circuit board had one section that bent somehow and was no longer making contact. Straightened that out and connected the battery to the pins and it spun again. Swapped neg/pos on the pins to make it spin the other way once it reached the threshold on one side.

I'm still changing out gears Jehannum designed to be 3D printed (post here) since these gears have stress cracks.

     
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