Cuckoo Regula 34 Stops

Discussion in 'Clock Repair' started by ddhix, Feb 10, 2013.

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  1. ddhix

    ddhix Registered User
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    Apr 7, 2011
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    So, I've had this problem just about every cuckoo clock that has been brought in.

    Take everything apart, do all the standard inspections, clean it all up, reassemble, everything works for a little while. Then BAM! The pendulum just hangs up.

    It drove me nuts for a little while. The pendulum would literally just hang up, it drove me crazy. It would run for a little while, then just stop. You could see the pendulum actually hang. It was insane.

    I remember it was very quiet in my little workshop, and I got the clock running constant with a bit of extra weight. I heard a very quiet squeaking sound. I got closer to the clock, and sure enough that movement was squeaking with every move of the pendulum. It was very quiet, but I could definitely hear it.

    After this, I replaced the escape wheel, and verge. This remedied the squeaking sound.

    I got another clock in. The pendulum hung just like the one before. I also heard a squeaking sound. Did the same thing (new verge and escape wheel). Fixed it.

    Now I have gotten tired of changing these things. So someone brought me this cuckoo clock a few days ago. Sure enough, the stupid pendulum would hang up. But when it wasn't hanging up, I heard a very quiet squeaking. Cleaned the movement like normal, except for the escape wheel and verge.

    I removed the escape wheel and verge. I took a small arkansas whetstone, and lined it up with the flat edge on the escape wheel. I then did three solid grinding motions. One Two Three, Next Tooth, One Two Three, and so on. Did the exact same thing with the opposite side of the teeth.

    Then took the arkansas whetstone, and gave a nice good polishing on the verge until it was sparking. Reinstalled the verge and escape wheel. Bam; fixed.

    I remember reading here some time ago someone saying that every cuckoo they've gotten has had a squeak to it. I hate that squeak.
     
  2. leeinv66

    leeinv66 Moderator
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    Mar 31, 2005
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    Probably a dumb question, but do you oil the escape wheel teeth after cleaning the movement?
     
  3. ddhix

    ddhix Registered User
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    Apr 7, 2011
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    I do oil it, very very lightly, probably not enough to make a difference, but just for a peace of mind, I suppose.
     
  4. Scottie-TX

    Scottie-TX Registered User
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    Well the piece of mind is great but the oil does indeed make a difference. Now back to the escape wheel: To maximize efficiency I have also stoned (filed with a VERY smooth file) the ACTIVE surfaces of the teeth. As for stoning both sides - waste of time. Treating an incactive surface improves nothing. I doubt polishing the active side of the teeth improves much but it sure does not hurt any.
    BUT! But polishing the ACTIVE pallet faces? That is utmost important. So much so that I propose an experiment for you on the next squeaking stopper: Polish the pallets only and test.
     
  5. Tom Derrick

    Tom Derrick Registered User

    Mar 10, 2020
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    I need some basic advice about my formerly working, now stopped cuckoo clock. The Regula 34 movement (8 day) has two 1266 gram weights. Not being an experienced clock person I hope to learn some diagnostic tips to restore this clock to service. What can I check while the movement is in the case?

    I made sure the case is plumb and level. The pendulum tick tocks when started by hand, then stops. I tried adding some extra weight to the minute pine cone, without much difference. I lightly oiled the shaft pivots on the back side.
     
  6. POWERSTROKE

    POWERSTROKE Registered User

    Jan 11, 2011
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    The 8 days are really finicky. The 5 I’ve repaired have been a pain. Everything has to be just right to run. How many years has it been run? I’m sure it probably has some wear to it. I’ve never oiled a cuckoo without disassembling it firstX it’s my opinion that when they stop, they did so for a reason other than oil. It probably needs to be torn down and inspected.
     
  7. POWERSTROKE

    POWERSTROKE Registered User

    Jan 11, 2011
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    What is the procedure to oil the teeth? (Where how much etc)
     
  8. roughbarked

    roughbarked Registered User

    Dec 2, 2016
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    Again, only on the face that contacts the pallets. It isn't really necessary to oil every tooth. Generally it isn't really necessary to oil more than both pallet faces.
     
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  9. POWERSTROKE

    POWERSTROKE Registered User

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  10. Tom Derrick

    Tom Derrick Registered User

    Mar 10, 2020
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    Thank you very much for your advice. Two questions: 1. Is the the wear likely to be in the pallet and escape wheel? In which case, might I buy the parts and figure out how to disassemble and install them (my experience in such repairs is limited to taking apart and putting in gaskets for a Honda carburetor!). 2. What is a reliable print source (with illustrations) for cleaning a cuckoo clock movement? Danke bitte.
     
  11. Willie X

    Willie X Registered User

    Feb 9, 2008
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    #11 Willie X, Mar 26, 2020 at 8:46 PM
    Last edited: Mar 26, 2020 at 9:11 PM
    The squeeking is not caused by wear or a lack of oil. I have studied this for years and come to the delusion (Ha) that this squeeking is made by a harmonic vibration of the pallet assembly. So, if you see wear at the pallet arbor by all means re-bush, but this is rare. Reshaping the crutch wire or adding a small weight somewhere on the crutch wire will sometimes make the squeeking stop.

    I stopped worrying about the squeeking mainly because I've never had a customer complain about it ... It's a non issue for me.

    Willie X
     
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  12. POWERSTROKE

    POWERSTROKE Registered User

    Jan 11, 2011
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    Well, I’m lying in bed now. But I’ll try to explain it as best I can. I don’t have a printed version. On the front you remove the eclip on the rack. The thing that looks like a half moon with the teeth. Then remove it. Go to the back of the movements and take the two eclips off the levers that protrudes through the front. Remove them after you remove the wire spring that holds the top one down. Remove the star whee on the back. Remove the three levers that test on the star wheel by turning them 180 degrees and lifting them out. (The Hong has a spring that needs to be disconnected) remove the four nuts on the back and lift the rear plate off. ( take pictures before you start any of this. I can now do it with my eyes 95% closed) remove all the wheels. The 2nd wheel on the strike side has the gathering pallet. Leave it on for now in case it doesn’t t need removal. PIA first time to get it set up properly on reinstall. Clean the movment in cleaning solution. For 1/2 hour. Remove. Rinse. Dry well. Put i back together after you peg the holes with a toothpick. Check for bad bushings by rocking each train from the 3rd then 2nd wheels. Look for excessive movement. I don’t like bushing cuckoos unless it has a certain look in the way it moves. Usually, I will be bushing the 2nd wheels on either side. Maybe one of them, maybe 2. Maybe front and back, depends. Let us know or make a video after it’s clean. On an 8 day, it really has to be pretty perfect to run. I personally like the one days, but that’s not what you asked. On an 8 day, it’s probable you may need 2nd wheel bushed, maybe the escape, and maybe the 1st. Clean it up. Many will say they’re difficult to work on, but it really depends on your mechanical aptitude. I took my first one apart a couple months ago and had no problems to write home about. Also, before you check for the wear, you may want to polish the pivots up a bit. If it had age on it; my bet is it needs a couple bushings. Like I said, ona well used movement,
    1-3 bushings is probably typical, but I just did one that literally needed 10. It’s the only one I’ve ever seen like that since I started, it’s up and run ing well on my wall right now for 3 days.

    if you have questions pm me and I can give you my phone number and you can call me tomorrow.
     
  13. shutterbug

    shutterbug Moderator
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    Oct 19, 2005
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    The squeaking goes away when you age enough :D
     
  14. Tom Derrick

    Tom Derrick Registered User

    Mar 10, 2020
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    Thank you, Powerstroke (named after the GM diesel engine?). I looked at some Youtube videos about re-bushing and concluded that I am not equipped to accomplish this procedure. Looks like an arbor is required, a set of number drills, a special gauge to measure the pivot diameter and the appropriate bushing in those “L” units. For now I’ll put my clock on the wall and look for a cuckoo repair place near Rhode Island. I really appreciate your detailed notes and the accumulated experience of all the members who responded.
     
  15. POWERSTROKE

    POWERSTROKE Registered User

    Jan 11, 2011
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    I do it by hand. I just started a couple months ago. I have already fixed a multitude of movements and 15 cuckoos. All are running well, this isn’t brain surgery to say the least. But a couple of tools,
    Especially with a. Cuckoo and it can be repaired.
    Also, you’ll need to do what I said in the cleaning aspect before you really can see what’s going on.
     
  16. Tom Derrick

    Tom Derrick Registered User

    Mar 10, 2020
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    Much thanks for your advice and encouragement. I ordered Bilger’s book on cuckoo repair to get a sense of the big picture. What are the needed tools to install bushings?
     
  17. MARK A. BUTTERWORTH

    MARK A. BUTTERWORTH Registered User
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    Jul 4, 2009
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    The squeak in a cuckoo movement is caused by a worn saddle. The saddle is the part between the suspension post and the leader. If you remove the saddle and either replace it or smooth out the warn part and lubricate it the problem should be solved. Regarding the weights on an eight day cuckoo, although it is common for them to have 1260 g it makes the movement underweighted and much better results will be found with 1500 g.
     
  18. POWERSTROKE

    POWERSTROKE Registered User

    Jan 11, 2011
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    Reamer, needle files and bushings. Not much.
     
  19. Tom Derrick

    Tom Derrick Registered User

    Mar 10, 2020
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    Thanks again. How do you determine the bushing size? (I see them listed by L number in the Clockworks website.) Is the reamer chosen by the OD of the bushing? Sorry for these very basic questions on technique, which you old-hands mastered long ago. Tempus fugit.
     
  20. POWERSTROKE

    POWERSTROKE Registered User

    Jan 11, 2011
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    Yes the reamer is measured by the od. I did my first 10 movments with the 2.7 kwm reamers and handle with the assortment of 2.7od bushings that went from 1.0 up to 1.9mm I’d.
     

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