September 14th, 2011, 04:12 PM
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#3 (permalink)
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Senior Member
- Join Date:
- Mar 2011
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Re: Thread Unraveling/ Catching stitches
Barudan have a problem? No, not possible.
I'm going to take a stab at this since I spent 20 years in the leather business as the chief mechanic and bottle washer (owner). When a machine jumps time and you know the hook is set correctly you have to look at the drive belt that operates the upper shaft and lower shaft. The top and bottom both have a gear. The top drives the needle bar and the lower drives the shuttle. If it is happening with all the heads I would be safe to assume that the timing is jumping at the gear from a worn or slack belt.
Take the cover off the wheel that shows the timing. The bridge machine is set on 25. At that point the hook should be directly behind the needle. Check each head and report back.
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