Introduction
When a Herschede grandfather clock stops at the moment it should chime, the cause is almost always related to the chime train, power loss, or binding in the movement. Even if the time train runs well, the additional load of the chime sequence can expose wear, friction, or alignment issues. This guide explains how to diagnose and correct the most common causes of a Herschede stopping at the chime.
How the Chime System Works
The chime train
The chime train powers the Westminster or Whittington melody. If it binds or lacks power, the entire clock may stop when the chime should begin.
The chime drum or barrel
The drum lifts the hammers in sequence. Excess friction or worn pivots can stall the train.
The hammer assembly
Hammers must lift freely and fall cleanly. If they drag or lift too high, the movement loses power.
The movement plates and pivots
Wear in the chime-train pivots increases friction and reduces available power.
The chime release mechanism
Improper release timing can cause the chime train to lock or stall at the warning position.
Why a Herschede Stops at the Chime
Worn chime-train bushings
Herschede movements are heavy and powerful. Worn bushings in the chime train are a leading cause of stoppage.
Hammer lift too high
Excessive hammer lift increases load on the chime train and can stop the clock.
Binding in the chime drum
Dirt, wear, or bent pins can cause the drum to stall under load.
Insufficient power from the weight
If the chime weight is incorrect or too light, the train may not run reliably.
Chime train out of sequence
Improper synchronization can cause the train to lock instead of running smoothly.
Diagnosing the Problem
Check hammer lift height
Hammers should lift only enough to produce a clear tone. Over-lifting is a major cause of stoppage.
Inspect chime-train pivots
Look for oval pivot holes, dirty pivots, or excessive wear.
Test chime drum rotation
Rotate the drum by hand to feel for binding, bent pins, or rough spots.
Verify weight placement
Ensure the heaviest weight is on the chime train. Incorrect placement reduces power.
Check chime release timing
The train should enter warning and release smoothly without hesitation.
Correcting the Issue
Adjust hammer lift
Reduce lift to the minimum needed for a clean strike. This restores power to the chime train.
Rebush worn pivot holes
Worn bushings cause friction and power loss. Rebushing restores proper depthing and efficiency.
Clean and polish pivots
Dirty or rough pivots increase drag. Clean and polish for smooth operation.
Correct drum binding
Straighten bent pins, clean the drum, and ensure free rotation.
Verify weight distribution
Place the heaviest weight on the chime train to ensure proper power delivery.
Troubleshooting Flowcharts
If the clock stops at the chime
Check hammer lift → Check chime drum → Check pivots → Check bushings → Check weight placement
If the chime is weak or slow
Check hammer lift → Check drum friction → Check pivot wear → Check weight
If the chime train won’t release
Check release lever → Check warning position → Check drum pins → Check synchronization
If the chime runs but sounds uneven
Check hammer alignment → Check rod clearance → Check drum pins → Check lift height
If the chime stalls mid‑sequence
Check drum binding → Check hammer lift → Check pivot friction → Check bushings
Common Mistakes to Avoid
Over-lifting the hammers
Too much lift dramatically increases load on the chime train.
Ignoring pivot wear
Worn pivots are a major cause of power loss in Herschede movements.
Using the wrong weight
The chime train requires the heaviest weight. Incorrect placement causes stalling.
Oiling the drum pins
Oil attracts dirt and increases friction. Keep pins clean and dry.
Forcing the chime train
Forcing can bend pins or damage the drum.
Checklist for Final Verification
• Chime train runs smoothly
• Hammer lift correctly adjusted
• Drum rotates freely
• Pivots clean and polished
• Bushings tight and properly centered
• Heaviest weight on chime train
• Chime sequence plays without hesitation
FAQs
Why does my Herschede stop when it tries to chime?
Usually due to hammer lift, drum binding, or worn chime-train bushings.
Which weight goes on the chime train?
The heaviest weight always powers the chime train.
Why is the chime weak or slow?
Often caused by friction, worn pivots, or excessive hammer lift.
Can worn bushings stop the chime train?
Yes. Worn bushings are a major cause of power loss.
Should I oil the chime drum?
No. Drum pins should remain clean and dry.
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