Broken key in fork lock
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Thread: Broken key in fork lock

  1. #1
    Junior Member ballbarian's Avatar
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    Broken key in fork lock

    Piece of key lodged in fork lock, probably need to remove cylinder to extract it. #'s match my good ignition switch w/ keys. It's a '66 CA77 and it is in the unlocked position. There is a small gap at the top of the round cylinder end that is squared off. I've tried inserting a sliver of credit card to depress the pins fully, but it won't budge. Is there a swaged retaining pin somewhere that I have not discovered? Any clues appreciated.

  2. #2
    Senior Member JamesPal's Avatar
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    I heard of a trick many years ago, I have never tried it, bu what the heck... Get a 12v car battery, I don't think the bike's battery is big enough. Ground the negative to the frame. Wire a piece of coat hanger to the positive, touch the end of the coat hanger to the broken key and it should weld itself to the key. Then you should be able to pull it out. Be ready to cut the power. It will become a dead short across the battery. Good luck and let me know how it comes out.
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    Junior Member ballbarian's Avatar
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    She is a crusty old dam. If I show her the jumper cables perhaps I'll get a confession without having to go all inquisition. I'll let you know.

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  5. #4
    Junior Member Gregomatic's Avatar
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    You can buy a key extractor from a locksmith supply for under $5.00.
    Last edited by Gregomatic; 11-07-2019 at 10:37 PM.

  6. #5
    Senior Member the-chauffeur's Avatar
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    I guess your options will depend on how much of the key is in the lock. If you can see the broken end, you're off to a pretty decent start. If you can't, you're going to struggle.

    Here are a couple of images of the CA77 steering lock:


    Broken key in fork lock-top.jpg Broken key in fork lock-side.jpg Broken key in fork lock-front.jpg

    I'm not sure where you're referring to when you say you're trying to put something in above the lock to try to knock down the pins, but I suspect it's the flat section you can see in image 3. If that's the case, it won't work 'cos the pins - assuming there are any - are inside the assembly. I say assuming because if the lock mechanism is anything like the seat locks on Honda's of the same age, there are no pins; they have a barrel with internal shaping (they're pretty crude). As you can see, there's a locating pin that sticks out when the lock is turned; that's the bit that may be preventing your lock from coming out. The key (and pin) needs to be in the 1-to-2 o'clock position to free the lock from the frame; the key will only come out of the lock at the 12 o'clock position.

    Again, how to remove the stuck bit is all about how much of the key is in the lock and how you can manipulate it. If I were you, I'd try to remove the key piece first; worry about getting the lock out later 'cos you can get a duplicate key if you can read the lock number. If you can see the broken bit, first try to turn it so it's in the 12 o'clock position - that'll at least give you half a chance of getting it out. Unless it's been jammed in and has completely frozen the mechanism, it shouldn't be too hard to move using watchmakers screwdrivers and sturdy tweezers. Bear in mind the key part in the lock will only be around 1/2in long; there's not much to it and it won't have a complex set of teeth. The same tools can also help you pull the remainder out. I've also extracted broken key parts using those tools and superglue before.

    Does that help?
    Last edited by the-chauffeur; 11-07-2019 at 01:19 PM.
    OldTwinsRock likes this.
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