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Old 09-10-2020, 04:17 PM   #11
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Join Date: Apr 2016
Location: Austria

Originally Posted by AfroSlyStone View Post
How can I check the preload?
You just make sure the flapper is closed and then connect the actuator arm by pulling it out a little bit from the actuator housing.
The preload needs to be just enough so that the flap is staying closed. The arm has a thread on it on the front part where it connects so you can adjust the preload.
If it's too loose, turn the front part clockwise so the whole arm gets shorter.

Basically just like shown here:
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