 Headlight Assembly with No Power, Determining Headlight Motor Stop Positions |
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| Highland |
 Nov 2 2018, 11:13 AM
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#1
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Senior Member  Group: Members Posts: 513 Joined: 8-August 11 From: San Diego, CA Member No.: 13,418 Region Association: Southern California  |
Wondering if there's any way to determine the headlight up and down positions without applying power.
I'm in the process of installing the headlight assembly but not yet have any electrical power. |
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| John |
Nov 2 2018, 11:20 AM
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#2
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member? what's a member? Group: Members Posts: 3,393 Joined: 30-January 04 From: Evansville, IN (SIRPCA) Member No.: 1,615 Region Association: None |
I'm sure if you study the wiring of the motors, you will find the position with a multi-meter.
The easiest way would be to apply temporary power and let the motor stop per design. I always found that it took a few cycles to position the output shaft in order to properly index the linkage arms on the splines. Be careful when working around those motors if they have any power applied. They have tremendous torque. Good luck. |
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| jmitro |
Nov 2 2018, 11:49 AM
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#3
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Senior Member Group: Members Posts: 713 Joined: 23-July 15 From: Oklahoma Member No.: 18,986 Region Association: None 
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have you tried the adjustment knob on top of the assembly? that will cycle the device through its motion so you can determine the natural open and closed positions. No power needed.
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| 76-914 |
Nov 2 2018, 12:00 PM
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#4
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Repeat Offender & Resident Subaru Antagonist Group: Members Posts: 13,504 Joined: 23-January 09 From: Temecula, CA Member No.: 9,964 Region Association: Southern California
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30 turns clockwise for full up or full down as viewed from the cabin. (IMG:style_emoticons/default/beerchug.gif)
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| Highland |
Nov 2 2018, 12:27 PM
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#5
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Senior Member Group: Members Posts: 513 Joined: 8-August 11 From: San Diego, CA Member No.: 13,418 Region Association: Southern California |
Thanks for the input. Problem is I don't know what position to start counting 30 turns.
With my luck when I power up my lights will home at half open. Not a big deal, it would just be cool to get them close now. |
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| SirAndy |
Nov 2 2018, 12:38 PM
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#6
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Resident German Group: Admin Posts: 41,651 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
QUOTE(Highland @ Nov 2 2018, 11:27 AM)  Thanks for the input. Problem is I don't know what position to start counting 30 turns. With my luck when I power up my lights will home at half open. Not a big deal, it would just be cool to get them close now. Leave the lever arms detached until you have power. Same goes for the bolt/nut that hold the "stop" since the stop actually isn't to stop the motor at all! As mentioned above, once you have power, cycle the motors a few times (Again, with the lever detached and no stop bolt). Then, with the lights on, pull the relay to the motor, then attach the lever and set the "stop" (which is only used to prevent the light from wiggling when open, *not* to stop the motor). But most importantly, whatever you do, keep your fingers away from the lever when you have power to the motor, only work on the lever with the relay removed. That motor has enough torque to strip the flesh right off your fingers! (IMG:style_emoticons/default/smash.gif) |
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| SirAndy |
Nov 2 2018, 12:40 PM
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#7
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Resident German Group: Admin Posts: 41,651 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
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| 76-914 |
Nov 2 2018, 02:15 PM
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#8
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Repeat Offender & Resident Subaru Antagonist Group: Members Posts: 13,504 Joined: 23-January 09 From: Temecula, CA Member No.: 9,964 Region Association: Southern California
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QUOTE(Highland @ Nov 2 2018, 11:27 AM) Thanks for the input. Problem is I don't know what position to start counting 30 turns. With my luck when I power up my lights will home at half open. Not a big deal, it would just be cool to get them close now. When the housing reaches the very top or bottom the knob is null for one turn. Place your hand on the bucket while turning the knob. You will feel when the bucket ceases to move. At that point turning the knob has no noticeable effect for one complete turn. Try it; you'll see. (IMG:style_emoticons/default/beerchug.gif) |
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