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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

Key Cylinder

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Old Jan 16, 2024 | 01:07 PM
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Key Cylinder

Hey guys I got a 1980 F150 and I have to replace a key cylinder. I got the old one out and have the new one. The old one came out with turning it to a run position and through a pin hole released the cylinder. My question is, I am trying to put the new one in I get it lined up but cannot get it to seat properly only goes about 3/4 way in. Any ideas if I I’m doing something wrong or any tips on how to get it to go in properly. Thanks in advance!
 
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Old Jan 17, 2024 | 07:15 AM
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Are you sure the end that goes in is lined up with the part it fits into?
IIRC it is a slot type thing could the truck side moved and now the new key will not slip in?

Not seeing the old & new next to each other and where it needs to go it is hard to say do this or that.
That is all I have for now. Dont know when I can get to my books to see if it has something so keep trying.
Dave ----
 
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Old Jan 17, 2024 | 11:06 AM
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If it's only going 3/4 in, then i suspect it's not lined up. If it goes almost all the way in, then it's just bad parts. I had this problem on my 91 Bronco. I bought the cheap lock and it wouldn't seat. I exchanged it, same problem. I bought the more expensive one with the same problem. I knew everything was lining up correctly. I put a micrometer on the end and it was slightly bigger. So i scraped and sanded on the end that goes into the actuator gear until it fit.
 
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Old Jan 17, 2024 | 01:21 PM
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It does fit and line up just won’t seat all the way in. I’m going to take a look and see if the new one is thicker on the end maybe that’s why it won’t go. I have a 71 that has the same issue went through 3 different cylinders and still have to start it with a screw driver lol.
 
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Old Jan 17, 2024 | 07:48 PM
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Color the end of it with a sharpie. It'll leave witness marks that tell you where it's hitting. The tip is just pot metal so it scrapes and sands easily
 
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