Door Lock Cylinder Replacement - 66 C10

[scoot_mcgrute]

Hey guys, I just installed a pair of door lock cylinders from LMC and thought I'd make a post showing the steps I did to make them work in the original handles. I knew something was wrong when I did the first one and couldn't get the key to work. Some searching found that others had to modify them to get them to work right but no pictures or anything.

I held the new one and the old one up side by side and noticed that the flats were a lot longer on the new units.


I marked the new one at the same length of the original


I cut the flats with my cutoff wheel but you can use anything that will cut metal. Don't forget your PPE


Reassembly started, put the spring cup with the round hole on first and then drop the cylinder in the handle. The lock cylinder will only go in at the correct orientation of the key, horizontal, so don't worry about installing it wrong.


Next is the spring, I used my vise to hold the handle so I can compress the spring


Next is the other spring cup and the retaining ring, it only goes on in the correct orientation. You will need to compress the spring, I did it by pushing on the top spring cup and then using the snap ring to push it in the rest of the way. Make sure the snap ring sits in the groove and you're done!


Reinstall on the truck and bask in your new door locks. Mine didn't have the lock on the passenger side which made it a pain on dates




Hopefully somebody finds this useful

[Heater63]

Thanks!, good info.

[MusicMan70]

Thanks as well for this ScoMac!

[343CA]

Great info and pictures,

[elane352]

ScoMac,

Thank you for posting this. I had the same issue with LMC door lock cylinders and the original door handles on my 64. I followed your steps. I am good to go now.

Edward

[dream66]

I'm 3 years late to the lock party but this thread shore did help me out.

[88Stanger]

Thank you for posting!

[Lokin4AReason]

Nice homework on the aftermarket component(s) . . .

I was wo dering the at when i was flipping page(s) on the catalog . Two cut(s) make it all happen . . .