Introduction
When a clock refuses to strike more than 8 or 9 times, the problem is almost always related to the count wheel, locking lever, or strike-train alignment. Even if the movement runs well, worn parts, bent levers, or incorrect depthing can cause the strike to stop prematurely. This guide explains how to diagnose and correct the most common causes of a strike train that will not complete the full hour count.
How the Strike System Works
The count wheel
The count wheel determines how many times the clock strikes. Each deep slot represents the end of a strike sequence.
The locking lever
The locking lever drops into the deep slot to stop the strike train at the correct time.
The warning and release system
The strike train enters warning before release. Incorrect timing can cause early locking.
The hammer lift system
Hammers must lift smoothly and fall freely. Excessive lift increases load and can stall the strike train.
The strike train gears
Wear, dirt, or bent arbors can cause hesitation or premature locking.
Why the Clock Stops Striking at 8 or 9
Count wheel misalignment
If the count wheel is not synchronized, the locking lever may fall into a deep slot too early.
Worn or bent locking lever
A bent lever may drop prematurely, stopping the strike before the full count.
Shallow or worn count wheel slots
Wear can cause the lever to slip into a slot that is not intended to stop the strike.
Hammer lift too high
Excessive lift increases load and can stall the strike train before completion.
Binding in the strike train
Dirty pivots, worn bushings, or bent arbors reduce power and cause early stoppage.
Diagnosing the Problem
Check count wheel alignment
Advance the strike train by hand and observe whether the lever drops into the correct deep slot.
Inspect the locking lever
Look for bends, wear, or improper positioning that could cause premature locking.
Test the strike train manually
With the movement let down, gently advance the strike train to feel for binding or hesitation.
Check hammer lift height
Hammers should lift only enough to produce a clear tone. Over-lifting is a major cause of strike-train stoppage.
Inspect pivot wear
Oval pivot holes or rough pivots reduce power and cause early locking.
Correcting the Issue
Realign the count wheel
Ensure the count wheel is synchronized with the strike sequence so the lever drops at the correct time.
Straighten or adjust the locking lever
Correct bends and ensure the lever drops cleanly into the deep slot only at the end of the strike.
Rebush worn pivot holes
Worn bushings cause friction and must be corrected for reliable strike operation.
Clean and polish pivots
Dirty or rough pivots dramatically reduce power. Clean and polish for smooth operation.
Reduce hammer lift
Lower the hammer tails to reduce load on the strike train.
Troubleshooting Flowcharts
If the strike stops at 8 or 9
Check count wheel → Check locking lever → Check pivots → Check bushings → Check hammer lift
If the strike is weak or slow
Check hammer lift → Check pivot wear → Check mainspring → Check alignment
If the strike locks immediately
Check count wheel → Check stop lever → Check warning → Check bushings
If the strike runs but sounds uneven
Check hammer alignment → Check rod clearance → Check lift height → Check drum friction
If the movement stops during strike
Check suspension → Check hammer lift → Check pivots → Check mainspring
Common Mistakes to Avoid
Misaligning the count wheel
Incorrect alignment causes premature locking and incomplete strike sequences.
Over-lifting the hammers
Too much lift dramatically increases load on the strike train.
Ignoring pivot wear
Worn pivots are a major cause of power loss in strike trains.
Oiling worn bushings
Oil cannot compensate for wear. Bushings must be replaced.
Forcing the strike train
Forcing can bend pins or damage the count wheel.
Checklist for Final Verification
• Count wheel aligned and synchronized
• Locking lever straight and functioning
• Pivots clean and polished
• Bushings tight and centered
• Hammer lift correctly adjusted
• Strike sequence completes without hesitation
FAQs
Why does my clock stop striking at 8 or 9?
Usually due to count wheel misalignment or a bent locking lever.
Why does the strike lock early?
Often caused by worn bushings or incorrect lever positioning.
Can worn bushings stop the strike train?
Yes. Oval pivot holes are a major cause of friction and power loss.
Should I oil the strike components?
Oil pivots only. Do not oil hammer tails or count wheel components.
Can hammer lift affect the strike count?
Absolutely. Excessive lift increases load and can stall the strike before completion.
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