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Old 03-08-2013, 05:37 PM
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nine9six
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Default 993 Fresh air servo motor

Can anyone tell me if the nylon actuator arm of the servo pictured below is removable?

It appears as if the metal head should be removeable, but I put a fair amount of torque on it and it didnt budge.

Is it possible that the nylon actuator arm is pressed onto a splined shaft?

Anyone have any experience with removing the actuator arm?
Thanks in advance
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Old 03-08-2013, 06:31 PM
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eddie_993
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Is it stuck or why are you trying to remove it? I messed with mine a bit last year but I don't know if it's removable or not.
Old 03-08-2013, 07:23 PM
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nine9six
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I bought a used servo from ebay, same p/n 964.624.325.00, but the actuator arm appears to be clocked incorrectly to actuate the fresh air flap.
Old 03-08-2013, 11:27 PM
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x50type
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Highly unlikely it can be turned and adjusted to a new position as you suggest.
Old 03-09-2013, 01:58 AM
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mgianzero
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Paul,

The actuator on the servo was set by the previous car it was in. You should NEVER change the lever in relation to the motor itself by removing and repositioning the lever in relation to the motor. That could lead to breaking something or burning out your servo unit.

Simply unplug the old servo and plug the new one in and you will see that it will move to the position set by your fresh-air settings. Then you can set the fresh air so that the lever points upwards (can't remember if this is open or closed). This makes is easier to install in the car.

Or bring it over and I'll install it for you. Once again, it's easier to install when you have a PST-2 system to test and position the servos BEFORE you install them for convenience.

Marc G.
Old 03-09-2013, 01:59 AM
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mojorizing
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The arm is splined to the shaft and is removable, but it's a tight fit and warming the nylon helps.

You really need to disassemble the servo to see where it's stroked in relationship to where it needs to rotate.
Old 03-09-2013, 01:59 PM
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nine9six
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Here's the deal...
I removed my fresh air intake servo as identified in the photo below.
The servo I removed from my car was marked 964.624.325.00, which I have now have determined to be incorrect.

This was determined after sourcing a used 964.624.325.00 servo, (see 2nd photo) and discovering the actuator arm does not stroke properly for this application.

I believe the correct p/n for the fresh air servo, is as you have identified, Marc; 964-624-901-00. (See 3rd photo)
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Old 03-09-2013, 05:53 PM
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mgianzero
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Paul,

Yes, you might be correct in that it is the OTHER (3rd pic) in what you showed. Like I said, I could not remember since I did this a while ago.

But you can probably still take the insides from the new "working" actuator and replace the bad one that you have. Unless the person you bought it from would exchange it for the other.

They are pretty easy to take apart. Bring it over and we can do the swap if you want.

I'm around Monday and Tuesday all day.


Marc
(714) 925-2444
Old 03-09-2013, 09:54 PM
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nine9six
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Marc,
I cut off the bracket you see in the first pic of the post. I believe this to ba a footwell servo based upon the bracket attached. (See 2nd pic of the 3 pic series of photos)

Both the fresh air, and footwell servos seem to be the same p/n, with the same 60 degree stroke.

The fresh air servo IS the unit pictured in the 3rd photo in the series of 3. Again, both units have the same p/n, and 60 degree stroke; albiet clocked from a different starting location.

I took the servo apart and reclocked the starting position of the actuator arm. and believe I am good to go. Everything is all buttoned up.

I may swing by Mon or Tues to show you what I did, but I think you already understand...

Thanks to you and all the respondants who chimed in with their help, guidance, and recommendations.
Old 03-10-2013, 01:16 AM
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mgianzero
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Paul,

You don't need to cut off the brackets. You take the servo case apart and exchange the insides.

Just bring it over and I'll show you.

Marc G.
Old 03-10-2013, 01:21 PM
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nine9six
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Marc,
Maybe not; but what is done, is done



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