Tool for Tightening Switches

Ian Anderson

Lifetime Supporter
Is there a speciat tool that is made to tighten up the nuts on Lucas style swithces that have round edges but 2 slots in the front? If so what is it called and where do you get them?

I have got them fairly tight by using a screwdriver in one side but some still feel loose.

The Ignition switch has the same slots and doesn't pull tight enough on the screwdriver method to stay still against the twist motion on the crank position.

thanks Ian
 
Ian, I made one out of aluminum stock. Just cut the appropriate size slot in the aluminum and it works like a charm,same for ign switch
 

Pete K.

GT40s Supporter
I took a (very cheap) pair of needle nose pliers and ground the tips to fit the slots in the switch "nut."
 

Ian Anderson

Lifetime Supporter
I tried te circlip pliers and they were fine on the switches BUT the ignition switch with twist action remains a problem

Thanks for the ideas

Ian
 

Lynn Larsen

Lynn Larsen
I don't think this will help you Ian, but for those who have the same problem with bezel ring/nuts with 3 slots there is a nice AND cheap tool. Harbor Freight (HF) sells a "watch case" wrench. In essence this is variable radius side spanner with two or three changable profiles for the tips. Well, if you watch, HF will often sell these things for ≈ $7.00 (the normal price is only $9 and change), and they make tightening the three slot bezel/nut a breeze. I don't recall what the min-max diameters are with the tool, but it seems to me that it will go upto around an inch and a half.

I used a vintage Ford ignition switch so that I could have the old square Ford key for my car. The bezel/nut is fairly large and anything I rigged up would still slip and I was afraid I was going to mar the bezel and I was never sure if I had tightened it well enough. And, usually I hadn't, so that when I would start the car, the whole switch would turn a little. (This was very disconcerting to someone as anal as I am: that damned key slot has to be perfectly plumb. And I KNOW that none of you out there are like that as well. LOL)

Regards,
Lynn
 

Ron Rowse

No Longer Available
I took a 9/16 socket 1/4 drive and filed down the edge until I it had two lugs sticking up. I have used this socket for over 20 years now with out fail. it was a Williams socket MD-618 from my avaition days. I was going to post a photo but I have had a gut full of trying. the message keeps coming back that the size is to big. yet I see others posting many photos on there thread. this is not the first time I have had trouble posting I have even asked this site for help but if you are not in the grove you never here back from anyone.

Hope the socket helps
Ron.
 

Chris Kouba

Supporter
ron rowse said:
I took a 9/16 socket 1/4 drive and filed down the edge until I it had two lugs sticking up. I have used this socket for over 20 years now with out fail. it was a Williams socket MD-618 from my avaition days... Ron.

Ron's cheat (click to enlarge any of them):







 

Lynn Larsen

Lynn Larsen
Here is a picture of the watch case opener I was talking about. As you can see, it is really designed for engaging slots that are multiples of three:'

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Harbor Freight #915510

Regards,
Lynn
 

Tim Kay

Lifetime Supporter
Since discussing the tightening of these Lucus nuts, would anyone know where to purchase this type of nut alone, without having to purchase the whole switch?
 
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