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Clocks, Watches/Schmeckenbecher Conundrum

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Hi Kenneth, I picked up a Schmeckenbecher "74" 261-030A 55cm/88.200 wall clock at a yard sale for a dollar#no weights or pendulum#. I did some research and got the correct pendulum and new weights #filled to 4.7 pounds exactly with lead shot#. I removed the clock works, set up a test stand and ran the clock to fine tune the time. What is happening is the half hour chime does nothing, the fly fan loads but does not activate the hammers. The fly fan again loads properly just prior to the hour but it chimes the half hour and does not completely move over allowing the rack to reach the snail. When activated by hand the chiming mechs work fine.

Can you point me in the right direction to obtain the drawings for this unit or a good manual/book so I can disassemble this clock and really learn what is going on. I've been successful in repairing two Urgos movements by reverse engineering #I'm a Marine Engineer# but on this one I am stuck. I've attached two pictures of the patient in the test stand.  

I would appreciate any and all help!

Regards,
Rich

Answer
lift levers
lift levers  
your movement was made by Hermle --this is the only manual:

http://timesavers.com/search.html?q=15154&go=Search

as to your problem - there is a two pointed cam on the minute hand shaft that lifts the lift lever on the half and hour-- a little higher on the hour to allow the rack to fall more than the one tooth allowed on the half hour. You are just not getting enough lift so that it does not allow any tooth on the half and only one tooth on the hour.

simply insert a wide blade screw driver at the point indicated and pry apart the two parallel black arms of the lift lever slightly and test -- too much spread and you get too much lift and you will get the hour strike at both the half AND the hour! see photo attached

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Kenneth Saunders

Expertise

any mechanical clock question -no watches- no battery clock questions and no appraisals-ie: "how much is my clock worth?" type questions please! Attach a photo if possible and note all markings on the rear of the mechanism- thanks 40 years as a professional clock repair person- still a full time clock repair service owner

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43+ years as a professional clock repair person- still a full time clock repair service owner.

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NAWCC

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Comment - On a scale of 1-10, I would give Mr. Saunders a 15 on each category. His responses were clear, addressed my questions and concerns in a way that even I could understand, and even sent a picture. He explained what I had and how to resolve the issue. I was amazed at how quickly he replied to each on my e mails. He shouldn't get a gold star, he should get a whole box of them!!! Thank you Mr. Saunders, I will keep you on my e-mail "speed dial". Comment - Ken answered my question regarding how to adjust the proper striking of the hammers on my Grandfather clock within a few minutes of my sending the question to him. He answered my follow-up question the next morning. I would rate him higher if there was a number larger than ten in the selection box. Thanks again Ken Comment - I RECEIVED AN ANSWER WITHIN AN HOUR.OUTSTANDING SERVICE.YOUR RATING SHOULD BE HIGHER THAN 10. Comment - This Man is Fantastic...there is no Scale for a Professional...like him...if there was...He'd beat the top of it...off.....and Smile....I could never ask for more ....this Man is TOPS.......100+......is his Score....

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