[Shop-talk] power hatch opener/closers

[Shannah Miller]

My spouse and I discussed it, since I have a car with
one of those closers, too.  We came up with a small
list of possible causes:
1. Messed up screw threads that cause it to "miss" and not
       close well
2. Could it be a bent latch?
3. Is the switch/actuator working properly?
4. Maybe the sensor to tell when it's shut completely is
      misaligned, or damaged, and thinks it's shut when
      it isn't?
When you find the problem, I'd be interested to hear
what it was.

Shannah
2018 Buick Envision "The Moose"

On Fri, Jul 30, 2021 at 8:41 PM John T. Blair <jblair1948 at cox.net> wrote:

>
> Gang,
>
> You all were so great at my last question, I've got another one for you.
>
> Anyone know how these power hatch opener & closers work?  A neighbor said
> she
> went to pick something up and told the person putting it in the back of
> her SUV
> NOT to close the hatch, she'd get it.  But the person grabbed the hatch
> and pulled
> it down.  Ever since it has been intermittant.
>
> I went looking for any info I could find on how they work and I couldn't
> find
> anything.  I was thinking there were linear actuactors.  But if that were
> the case
> I don't think they should have been able to close the hatch manually.  I
> though
> a linear actuactor was basically a long bolt (all thread) attached to a
> motor with a
> nut that was attached to the item you wanted to more.  If that's the case,
> then
> you shouldn't be able to force the hatch closed as the nut would not slide
> on the
> rod and the rod wouldn't turn to let the nut slide down.
>
> So what's in those tubes?  From what I can tell, one is an assist strut
> (I'm
> assuming gas filled) and the other is the actual lifting/closing unit.
>
> John
>
>
>
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> John T. Blair  WA4OHZ     email:  jblair1948 at cox.net
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