Rear Light Repair

Farmall Cub Forum -- Questions and answers to all of your Cub related issues.

Moderator: Team Cub

Forum rules
Notice: For sale and wanted posts are not allowed in this forum. Please use our free classifieds or one of our site sponsors for your tractor and parts needs.
User avatar
Stanton
Team Cub
Team Cub
Posts: 4761
Joined: Mon Jun 22, 2009 6:56 am
Zip Code: 64070
Tractors Owned: 1942 Farmall AV, serial #87025
1947 Farmall Circle Cub, serial #2116
1948 Farmall Cub, serial #46066
Circle of Safety: Y
Location: Lone Jack, MO

Rear Light Repair

Postby Stanton » Thu Dec 17, 2015 8:54 am

Bought a milk crate full of Guide lights at the big Cub auction in Des Moines earlier this month. Before the auction, I spied two rear combo lights in the crate; one with the top bullet light and the other with an internal jewel light. By the time the auction rolled around and I bought the crate, somehow the rear combo light had jumped out of the crate and landed in some other pile, which I didn't get to take home. Hey, it happens.

Got out the internal jewel light to see what was going on with it. It was dirty. Some PO had relegated it to barn life because the knob switch didn't turn and perhaps the lens was broken. This came without a lens and the rim was dented. Otherwise, it was mostly intact.

001.JPG

002.JPG


Disassembly begins by taking the rim off and inspecting the interior. Most of the wiring here was fine, although I had to use a Dremel to cut off the 8-32 screw connecting the main power supply.

003.JPG

010.JPG

006.JPG


Next was repairing the rim. I had made a walnut disc some years back that is the same size as the rim. Inserted the disc and using a hammer, I tapped the sheetmetal back to shape, tightening the clamping screw to take up the slack as I went. It's not perfect, but better than it was.

007.JPG

008.JPG


The set screw was removed from the knob (don't drop it), the knob removes, then the locking nut from the shaft collar. The whole assembly drops out the bottom through the interior of the light.

011.JPG

Upon closer inspection, the switch appears to be in good external shape, but as I said before, the knob shaft is corroded and stuck inside the collar preventing it from rotating.

012.JPG

By carefully bending the 3 prongs on the back of the switch, the back is removed revealing the interior.

014.JPG


The terminal labeled "B" is where the main power is connected and "R" and "L" are separate wires to each lamp. As you can see, there is an upper disc (connected to the shaft) and a lower disc having 4 connectors. When the switch is functioning properly, the shaft rotates the upper disc that allows a copper connector to land on only 2 of the 4 connectors on the lower disc (either B & L, or B & R), allowing power to go to either the main lamp or the jewel lamp. The copper connector has 2 tabs that go into the upper disc keeping it in place. Once I cleaned everything, I still had the problem of getting the shaft separated from the upper disc housing (aluminum) and collar (brass). Having no good way to hold this while trying to get pressure on the end of the shaft to drive it through, I replaced it back in the housing with the locking nut and gently tapped on the end of the shaft. I'll also say that I had used a good quantity of 50/50 acetone and ATM fluid and some Seafoam penetrant for a few days prior to this.

015.JPG


My patience was rewarded with success. Knob switch fully disassembled.

016.JPG


Once cleaned with a combination of wire brushes, fine sandpaper, alcohol and blown dry with compressed air, the switch is reassembled and the 3 prongs gently bent into place. The light is reassembled. I wasn't happy with the condition of the lens reflector, so I used some aluminum foil, sprayed the back with adhesive, and stuck it on. Yeah, it looks cheap. :) Not pretty, but more reflective than before.

017.JPG


NAPA sells jewel bulbs (LMP-51, 6V), so I fitted it up with an extra lens (on hand) and a rubber gasket (made from a windshield wiper blade) and it all works as designed.

018.JPG

019.JPG


Other than the cost of light bulb, I really didn't buy anything, just disassembly and cleaning. Nice way to spend a few evenings during winter. Hope this encourages you to give it a try.
Stanton
Image Circle of Safety

User avatar
Don McCombs
Team Cub Mentor
Team Cub Mentor
Posts: 13262
Joined: Mon Feb 03, 2003 6:45 am
Zip Code: 21550
Tractors Owned: "1950 Something" Farmall Cub
1957 Farmall Cub w/FH
1977 International Cub w/FH
1978 International Cub
1948 Farmall Super A
Circle of Safety: Y
Location: MD, Deep Creek Lake

Re: Rear Light Repair

Postby Don McCombs » Thu Dec 17, 2015 9:06 am

Good job and great tutorial.
Don McCombs
MD, Deep Creek Lake

Image
Proud Member of Maryland Chapter 39

User avatar
Barnyard
Team Cub
Team Cub
Posts: 21077
Joined: Tue Aug 07, 2007 3:39 pm
Zip Code: 45030
Tractors Owned: At This Time
40 Farmall Cubs (Round Hood)
2 Farmall Cub (Square Hood)
2 IH Cubs (Square Hood)
5 Lo-Boys (Round Hood)
2 Lo-Boys (Square Hood)
2 Farmall 404's
1 Farmall H
1 Ferguson 20
1 Cub Cadet 125
1 Kubota B-7100
Circle of Safety: Y
Location: OH, New Haven (Hamilton County)

Re: Rear Light Repair

Postby Barnyard » Thu Dec 17, 2015 9:44 am

Thanks for sharing. I have copied and locked this in the How To forum for future reference.
It is common sense to take a method and try it. If it fails, admit it frankly and try another. But above all, try something.
- Franklin D. Roosevelt -

Circle of Safety

User avatar
ricky racer
10+ Years
10+ Years
Posts: 4266
Joined: Wed Sep 12, 2007 8:40 pm
Zip Code: 49120
Circle of Safety: Y
Location: Niles / Buchanan, Michigan

Re: Rear Light Repair

Postby ricky racer » Thu Dec 17, 2015 11:35 am

:applause: :applause: WOW!! Great job Stanton!! :applause: :applause:
1929 Farmall Regular
1935 John Deere B
1937 John Deere A
1941 John Deere H
1952 John Deere B
1953 Farmall Cub

cub.bub
Cub Star!!
Cub Star!!
Posts: 284
Joined: Wed Jul 16, 2014 8:07 am
Zip Code: 46628
Tractors Owned: 55 cub, 54a blade, (2) woods L59 mower...Allis Chalmers CA
1965 International 140, 60" grader blade.
Circle of Safety: Y
Location: Northern Indiana

Re: Rear Light Repair

Postby cub.bub » Thu Dec 17, 2015 11:41 am

Great Job!! Thanks for the lesson.
It's a good feeling to repair/bring back to life this old equipment! A Dremel is a "must have" tool.

Bruce.

UK-Cub
Cub Star
Cub Star
Posts: 168
Joined: Mon Jun 16, 2014 3:48 pm
Zip Code: LA9
Circle of Safety: Y
Location: Kendal, England

Re: Rear Light Repair

Postby UK-Cub » Thu Dec 17, 2015 11:43 am

Always good to see a 'how to'.

:thanx:
David

1956 Lister D stationary engine
1957 French Cub
2012 Land Rover Defender 110 double cab pick up

Every day is a school day

"Choose a job you love and you will never have to work a day in your life" Confucius

snoman7c
Cub Star
Cub Star
Posts: 69
Joined: Sun Jan 05, 2014 8:56 am
Zip Code: 15909
Tractors Owned: 1951 Farmall Cub
Circle of Safety: Y
Location: Johnstown, Pennsylvania

Re: Rear Light Repair

Postby snoman7c » Thu Dec 17, 2015 5:39 pm

Nice job! Just thought that I would mention that if you know anybody in the HVAC business, they use a Chrome tape with adhesive on it to seal their ductwork. I used that tape on a Coleman lantern for night fishing. It take the heat very well :D Just a thought!

Rob in NH
10+ Years
10+ Years
Posts: 2492
Joined: Sun Oct 03, 2004 7:11 am
Zip Code: 03848
eBay ID: panelbeata
Tractors Owned: 1947 circle cub
1950 cub demonstrator
1957 cub
1967 cub
Circle of Safety: Y
Location: NH, Kingston

Re: Rear Light Repair

Postby Rob in NH » Thu Dec 17, 2015 6:07 pm

That came out real nice, great job.
Image

Puffie40
Cub Star!!
Cub Star!!
Posts: 277
Joined: Wed Sep 10, 2014 12:47 pm
Zip Code: 00000
Tractors Owned: 1948 Farmall Cub
1939 Farmall H
1959 MF 202
1965 MF 180
1937 Caterpillar 22
Circle of Safety: Y
Location: BC Canada

Re: Rear Light Repair

Postby Puffie40 » Thu Dec 17, 2015 6:10 pm

If the plating on the reflector is okay,a metal polish paste like Autosol quickly brings it to a shine (toothpaste might work as well,though not as effectively). Either spin the reflector in a lathe or power drill, or get one of those polishing balls for car waxes.

brewzalot
Cub Star!!
Cub Star!!
Posts: 371
Joined: Sat Jul 12, 2014 10:10 pm
Zip Code: 53105
Tractors Owned: '57 cub Loboy
'61 cub
Circle of Safety: Y
Location: Wisconsin, Burlington

Re: Rear Light Repair

Postby brewzalot » Thu Dec 17, 2015 9:44 pm

Stanton wrote:I had made a walnut disc some years back that is the same size as the rim


WOW! , you know someone's good when they use walnut for templates... nice job.

Tim

User avatar
randallc
5+ Years
5+ Years
Posts: 1733
Joined: Tue Jan 18, 2011 9:16 am
Zip Code: 72940
Tractors Owned: 1951 Farmall Cub, 152 disk plow, 2 gang disk, belly mower, sickle mower
1949 Farmall Cub, cultivator, moldboard plow, disk,front blade. Cub Cadet, LTX1045 Mower. Cub Cadet's 109, 125, 1000, and 1250
1961 cub c2 belly mower and full blade. 48 cub manual lift with cultivators.
Circle of Safety: Y
Location: Witcherville, AR

Re: Rear Light Repair

Postby randallc » Fri Dec 18, 2015 6:00 am

You did it again! Nice!!
Guinea, 1951 Farmall Cub; Jumping Willy, 1949 Farmall Cub, 61 Cub, Scrapy, and 48 Cub Al, 48 cub, Billy D.
Image

Cubfriend
5+ Years
5+ Years
Posts: 398
Joined: Sat Jan 28, 2012 3:13 pm
Zip Code: 68803
Tractors Owned: 1948 Cub, Kittie; 1948 Cub, Harold; 1949 Cub, 49er; 1951 Cub, Tucker; 1951 Cub, Homely; 1956 Cub High Crop; 1957 Cub Loboy; 57 Cub Loboy w/fasthitch + 194 plow; 1958 Cub LoBoy w/FH, Popeye; 1961 Cub, Beater; #1-1962 Cub Loboy Dually (Originally Orange) w/Foot Throttle; #2-1962 Cub Loboy Dually (Originally Orange) w/Foot throttle; Yellow 1963 Cub Loboy and blade; 1970 Cub, Cubbie; and 5 other Cubs in various stages of disaasembly and disrepair; 1962 Cub Cadet Original; 2 other Cub Cadet Originals; Cub Cadet 100; Cub Cadet 124 w/Creeper; Cub Cadet 147; 2 Cub Cadet 129's; Cub Cadet 149; 1948 Allis Chalmers C w/single frontwheel; 1944 Formal H w/Tokhiem Cab; 2 One Point Fasthitch Carriers; #100 Fasthitch Rear Blade; 2 Sets Cub 144 Cultivators; 2 Sets Cub 252 Cultivators; 3 Cub 193 Mouldboard Plows; 1 Cub 193 Slatted Plow; 1 1948 Cub-54 Snow Plow; 3 Cub-54 49-5 Snow Plows; Cub #6 Tool Bar w/Disc Blades & Middlebuster.
Circle of Safety: Y
Location: Grand Island, Nebraska

Re: Rear Light Repair

Postby Cubfriend » Sun Dec 20, 2015 10:34 pm

Stanton, It's always intresting to read your posts on repairs. Gives the rest of us some food for thought. Thanks for the How To! Catch you later, Frank
Frank

danovercash
10+ Years
10+ Years
Posts: 3369
Joined: Mon Feb 17, 2003 8:48 pm
Zip Code: 28081
Circle of Safety: Y
Location: NC, Kannapolis

Re: Rear Light Repair

Postby danovercash » Sun Dec 20, 2015 10:53 pm

If it can stand the heat, how about chrome Mylar instead of foil. Just a thought. Very nice job on the light. I love seeing things fixed that aren't supposed to be able to be fixed.
"I'd rather be a mechanic in the shop"- Henry Ford

252646 & 221525. 195897 (Gone, but not forgotten)

User avatar
schmibm
10+ Years
10+ Years
Posts: 688
Joined: Tue Jun 06, 2006 10:37 pm
Location: Janesville, IA

Re: Rear Light Repair

Postby schmibm » Sun Dec 20, 2015 11:54 pm

Nice job!! I liked the idea of the walnut ring tool. I must make one of these now.

For the reflector, I typically just use chrome spray paint. It goes on perfectly and when dry, is as reflective as aluminum foil. Heat doesn't bother it. The benefit is that it is quick to go on.

BTW. I was working on updating these to LEDs. I ordered the 6V red LED bulbs and 6V white LED bulbs and figured this would be perfect and not heat up the red plastic lens and would probably be brighter. After I got them, I learned quickly about positive ground and that LEDs are designed for negative ground. So the bulbs won't light without modification. So I went back with the filament bulbs for now.....
1949 Project Cub
1955 Cub Lo-Boy "Jack"
1957 Cub Lo-Boy "Mac"
1957 Cub with 5' Woods Belly Mower "James"
24 other Farmalls A thru SMTA.

User avatar
Stanton
Team Cub
Team Cub
Posts: 4761
Joined: Mon Jun 22, 2009 6:56 am
Zip Code: 64070
Tractors Owned: 1942 Farmall AV, serial #87025
1947 Farmall Circle Cub, serial #2116
1948 Farmall Cub, serial #46066
Circle of Safety: Y
Location: Lone Jack, MO

Re: Rear Light Repair

Postby Stanton » Mon Dec 21, 2015 7:40 am

snoman7c wrote:Nice job! Just thought that I would mention that if you know anybody in the HVAC business, they use a Chrome tape with adhesive on it to seal their ductwork. I used that tape on a Coleman lantern for night fishing. It take the heat very well :D Just a thought!


Was in Home Depot last week (after reading your comment) and found they sell rolls of highly reflective HVAC tape. That would be worth a try.

Puffie40 wrote:If the plating on the reflector is okay,a metal polish paste like Autosol quickly brings it to a shine (toothpaste might work as well,though not as effectively). Either spin the reflector in a lathe or power drill, or get one of those polishing balls for car waxes.


Also try Bon-Ami or similar, and/or silver polish. Had these on hand, so that's what I used. Unfortunately, some reflectors chrome are too far gone, so it's a replacement or applying something in its place (paint or foil).

[quote="schmibm"]For the reflector, I typically just use chrome spray paint. It goes on perfectly and when dry, is as reflective as aluminum foil. Heat doesn't bother it. The benefit is that it is quick to go on.quote]

Have used a can of "aluminum" spray paint in the past, but wasn't impressed. Agreed, it was more reflective than before, but not that highly polished chrome-like surface I was hoping. There are just too few metallic particles in the spray paint to get that high reflective surface. But thanks for suggesting it. :)
Stanton
Image Circle of Safety


  • Similar Topics
    Replies
    Views
    Last post

Return to “Farmall Cub”

Who is online

Users browsing this forum: Bill E Bob and 6 guests