6066 (1960-1966) GMC Truck Club Bitcoin now accepted here! 
Pay Dues
Pay Dues or become a Site Supporter
 



Go Back   6066 (1960-1966) GMC Truck Club > 6066 GMC Truck Club Forum > Interiors, Dash, Lights and Electrical
#Sponsored

Interiors, Dash, Lights and Electrical Everything Inside

Reply
 
Thread Tools
  #1  
Old August 16th, 2023, 09:50 PM
Prowbar Prowbar is offline
Senior Member
 
Join Date: Dec 2020
Location: Friesland, the Netherlands
Truck: 1965 GMC 1500, 478 V6, SM420
Posts: 436
Thanks: 8
Thanked 10 Times in 9 Posts
Rep Power: 199
Prowbar is a jewel in the roughProwbar is a jewel in the roughProwbar is a jewel in the roughProwbar is a jewel in the roughProwbar is a jewel in the roughProwbar is a jewel in the rough
Default A simple turn signal cam fix

The turn signal cam broke a long time ago on my GMC.
After finding dozens of threads about the turn signal cams breaking and without any simple solutions, I found a method to easily repair them. See pictures.

I used a coiled leaf spring that is used in an (older) electric motor to press the carbon brushes onto the rotor. The center of the spring has a folded tab, which can be used for the cam part. The width of the spring is close enough that it needs no modification.

I unwound the spring, cut it off, and fitted it to the proper length. I then used a small carbide PCB drill to drill a small hole in the spring, which was then enlarged with a 2,5mm (.100") drill. A smaller hole was then drilled in the top of the cam, where the arrow is pointed. A small screw, used in consumer electronics, was used to fasten the leaf spring to the turn signal cam. I only used one screw, and it seems to work fine.
That spot was chosen because the plastic is solid there, which allows for a strong connection. It is best to predrill the hole to avoid unnecessary tension on the plastic. Experiment to find the right size first. In my case, it was a 2mm hole (0.080")

I then tested it for function and it works fine! I reassembled the steering column without any trouble. The turn signal cam works and cancels the turn signal as it should again. Anyone with a bit of mechanical skill should be able to fix their turn signal cam this way.
Attached Images
File Type: jpg 20230816_222331.jpg (186.4 KB, Multiple views, 10 clicks)
File Type: jpg 20230816_204022.jpg (218.1 KB, Multiple views, 8 clicks)
Reply With Quote
Reply

Bookmarks

Tags
fix, repair, turn signal, turn signal cam, turn signal switch


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
RE: [6066 GMC] Re: Turn signal cancel cam? Archiver Previous Forum Posts 0 January 30th, 2007 02:14 AM
Re: Turn signal cancel cam? Archiver Previous Forum Posts 0 January 29th, 2007 12:00 AM
Turn signal cancel cam? Archiver Previous Forum Posts 0 January 26th, 2007 01:56 PM
RE: [6066 GMC Truck] Turn signal canceling cam Archiver Previous Forum Posts 0 July 24th, 2002 01:40 AM
Turn signal canceling cam Archiver Previous Forum Posts 0 July 22nd, 2002 01:06 AM


All times are GMT +1. The time now is 08:19 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2013, Jelsoft Enterprises Ltd 841730414881|1729235982|0