The Ford Barn

aermotor · 02-08-2017, 06:13 AM

28 Tudor, During my shake down drives before I got my tires balanced (dyna - beads), which are great, I lost a headlight adjusting screw. Don't want to mess with my cork seals to see what size screw is used, so does anyone know what size the adjusting screw is?

John

Paul Bennett · 02-08-2017, 08:33 AM

If we're having a lottery I'll take 10-32 for $5

SeaSlugs · 02-08-2017, 08:55 AM

i know its a fine thread and that sounds about right ^^^^^^^

Tom Wesenberg · 02-08-2017, 10:42 AM

Parts Price List is one of the "must have" books for all Model A owners, and lists the 28-9 screw as:
A-20525-S13R in my July 1, 1931 edition. This is listed as 3/16-32 X 1 oval head special screw.

You might need to take the lamp apart anyway to make sure the spring is in place.
Special screw means you might have to call Bert's for the right screw. 800-321-1931

aermotor · 02-08-2017, 10:51 AM

Thanks guys. Now what are the odds that the spring is still in place?

John

Doug Clayton · 02-09-2017, 12:35 AM

Sponsored Links (Register now to hide all advertisements)

It was listed as a special head screw because it is a 10-32 with a #8 head.

Bruce of MN · 02-09-2017, 05:16 AM

Mine have unscrewed themselves, even after I used some dished star lockwashers. I have thought of adjusting the focus, counting the turns to unscrew, then putting them back in with some blue loctite on them. Or is there a better way to do it? The motor doesn't vibrate badly.

Bob C · 02-09-2017, 11:58 AM

I came up with the same a Doug, 10-32 x 1 1/8" special oval head 350120-S13.

Bob

Special Coupe Frank · 02-09-2017, 12:21 PM

Be careful the replacement screw is not too long - if it is, it can contact the hot terminals at the back of the socket and cause a short to ground.

I had to shorten the screws in the SS repro lights that came with my '28.

Jim/GA · 02-09-2017, 07:04 PM

Quote:

Originally Posted by Bruce of MN

Mine have unscrewed themselves, even after I used some dished star lockwashers. I have thought of adjusting the focus, counting the turns to unscrew, then putting them back in with some blue loctite on them. Or is there a better way to do it? The motor doesn't vibrate badly.

What year is your car, Bruce?

figment · 02-09-2017, 07:16 PM

I believe the screws are special and are threaded only part way and can only be screwed in so far. This is what I found on some original unmolsted headlamps. I have been looking for some originals that could be used for fine point. Good original ones are not easy to find. I also think 28-29 are different than 30-31 but I could be wrong.

Bruce of MN · 02-10-2017, 03:55 PM

Quote:

Originally Posted by Jim/TX/GA

What year is your car, Bruce?

It is a '31.

midgetracer · 02-11-2017, 03:28 AM

30-31s are shorter, but thread size is the same.

02-08-2017, 06:13 AM	#1
aermotor Senior Member Join Date: Mar 2015 Location: Greenville, SC Posts: 1,099	Head light adjusting screws 28 Tudor, During my shake down drives before I got my tires balanced (dyna - beads), which are great, I lost a headlight adjusting screw. Don't want to mess with my cork seals to see what size screw is used, so does anyone know what size the adjusting screw is? John

02-08-2017, 08:33 AM	#2
Paul Bennett Senior Member Join Date: Sep 2016 Posts: 628	Re: Head light adjusting screws If we're having a lottery I'll take 10-32 for $5

02-08-2017, 08:55 AM	#3
SeaSlugs Senior Member Join Date: May 2010 Location: Central, IL Posts: 3,968	Re: Head light adjusting screws i know its a fine thread and that sounds about right ^^^^^^^ __________________ 1929 Model AA - Need long splash aprons!

02-08-2017, 10:42 AM	#4
Tom Wesenberg Senior Member Join Date: May 2010 Location: Mpls, MN Posts: 27,582	Re: Head light adjusting screws Parts Price List is one of the "must have" books for all Model A owners, and lists the 28-9 screw as: A-20525-S13R in my July 1, 1931 edition. This is listed as 3/16-32 X 1 oval head special screw. You might need to take the lamp apart anyway to make sure the spring is in place. Special screw means you might have to call Bert's for the right screw. 800-321-1931

02-08-2017, 10:51 AM	#5
aermotor Senior Member Join Date: Mar 2015 Location: Greenville, SC Posts: 1,099	Re: Head light adjusting screws Thanks guys. Now what are the odds that the spring is still in place? John

02-09-2017, 12:35 AM	#6
Doug Clayton Senior Member Join Date: May 2010 Posts: 132	Re: Head light adjusting screws Sponsored Links (Register now to hide all advertisements) It was listed as a special head screw because it is a 10-32 with a #8 head.

02-09-2017, 05:16 AM	#7
Bruce of MN Senior Member Join Date: May 2010 Location: VA Posts: 1,410	Re: Head light adjusting screws Mine have unscrewed themselves, even after I used some dished star lockwashers. I have thought of adjusting the focus, counting the turns to unscrew, then putting them back in with some blue loctite on them. Or is there a better way to do it? The motor doesn't vibrate badly.

02-09-2017, 11:58 AM	#8
Bob C Senior Member Join Date: May 2010 Location: So Cal Posts: 8,751	Re: Head light adjusting screws I came up with the same a Doug, 10-32 x 1 1/8" special oval head 350120-S13. Bob

02-09-2017, 12:21 PM	#9
Special Coupe Frank Senior Member Join Date: May 2010 Location: Northeast Penna Posts: 2,108	Re: Head light adjusting screws Be careful the replacement screw is not too long - if it is, it can contact the hot terminals at the back of the socket and cause a short to ground. I had to shorten the screws in the SS repro lights that came with my '28.

02-09-2017, 07:16 PM	#11
figment Senior Member Join Date: May 2010 Posts: 332	Re: Head light adjusting screws I believe the screws are special and are threaded only part way and can only be screwed in so far. This is what I found on some original unmolsted headlamps. I have been looking for some originals that could be used for fine point. Good original ones are not easy to find. I also think 28-29 are different than 30-31 but I could be wrong.

02-11-2017, 03:28 AM	#13
midgetracer Senior Member Join Date: May 2010 Location: Bismarck ND Posts: 1,189	Re: Head light adjusting screws 30-31s are shorter, but thread size is the same.