trouble with waltham model 92 grade 845

tracker

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Aug 15, 2007
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Iam having the cause of a problem with my waltham model 1892 the balance wheel seems to be bound up and will not turn freely . the balance staff and pivots but power does not seem to be getting transmitted to the balance from the mainspring. Any ideas on how to troubleshoot this problem? Thanks.
 

musicguy

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Moved to watch repair


Rob
 

MrRoundel

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No telling what the problem is from here. That said, being that these are full-plate movements that sometimes give assemblers grief at the pallet-fork, I'll throw a broken pallet-fork pivot as one distinct possibility. Just a WAG though. I've seen this on a few 1892's. And to complicate matters, there are two or three different types of pallet arbors for the model based on pivot type, i.e. straight vs. conical. Only your watchmaker will know for sure. Unless you have decent knowledge of such things yourself, of course. Good luck.
 

John Runciman

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for those who haven't seen the watch before I have a link which has pictures. This is a rather interesting watch as pointed out above it's a full plate but it's not your normal full plate. Unfortunately ilike all full plates everything is hidden. This makes troubleshooting definitely more interesting.

Be nice to have a little more background history like the watch was running perfect and this suddenly popped up. Then was was the last time this watch was serviced if ever?

845 Versions - Waltham Watch Company's Model 1892
 

Kenny S.

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The problem I have encountered with this movement, and I have several, is if the mainspring was replaced with an incorrect one, or one that is slightly taller than it should be. This will cause the MS barrel to sit high and therefore the plate will not seat correctly. I'm talking .01"-.015" of an inch. If this isn't caught, and the screws are tightened down, the resulting bind will cause the watch to not run. If you loosen the screws of that plate slightly and your watch starts running, you have solved the problem.
 
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Rockford's early high grade movements by Greg Frauenhoff