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Old 08-29-2013   #2
Dynomite
 
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Join Date: Aug 2009
Location: South Dakota/California
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Default The Bilstein FX-3 Actuator taken apart by Franke

You are DA MAN Franke...Franke "took apart" an FX-3 Actuator for us....

1. Photos of FX-3 Bilstein Actuator taken apart. Franke......those are great photos....appreciate it.

Quote:
Originally Posted by Franke View Post
I was going to disassemble one of these and it ain't lookin' easy. I was not sure how to reassemble it after cutting the case open. These units have a small motor and a feedback sensor in them to control shaft position. Could it be possible to borrow one from the rear shocks to test the front electronics?
I think front and rear Actuators are the same electronically except for length of attached cable.





2. Actuator Rotating Mechanism (How the Actuator Rotates the shock gear shaft which in turn aligns various ports within the shock).

Quote:
Originally Posted by Franke View Post
I took an old one apart. You will destroy it as it is glued extremely well.
It has a planetary gear set, sun gear and the outer ring gear is part of the casing. Everything is glued together even the motor housing to the casing.


3. Actuator Operation and Initial Installation of Actuator on FX-3.
When you turn the key to "Run", the actuator goes CCW and then back CW or CW and then CCW.....but both directions like it is searching for end points. Apparently when you install the actuator on top of shock you do not have to align the gear on top of shock.........But I did
I centered the gear as it rotates I think 160 deg total and I centered at 80 deg from one stop....but I think that was not necessary.

The Actuator gear teeth (you can see the gear looking in the open end of the Actuator) which are plastic get broken. I had a front Actuator just dead in the water recently (electrical issue).

4. Used Actuator Source.
Corvettenutz has used Actuators in stock.

Ebay ZR-1 FX-3 Bilstein Shock Actuators

5. Actuator Part Numbers.

92-95 front Actuator part # is 22114407 (rear is part # 22114337). I actually had an extra Actuator #22114407 (92-95) which worked fine on my 91'.

The 89-91 front Actuator part # is 22075651 (rear is part # 22075652).

The 89-91 Actuators and 92-95 Actuators are interchangeable as far as I know (the difference between Rear and Front Actuators is the length of the attached electrical cable).

6. Actuators Can Be Repaired.

FX3 Actuator Rebuild TIPS

Last edited by Dynomite; 08-29-2013 at 08:26 PM.
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