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Topic: Why key (E3) don't stricking work to the strings. The jack (unglued) loose  (Read 1598 times)

Offline themaximillyan

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Why key (E3) don't stricking work to the strings. The jack  (unglued) loose from 'the wippen of the upright piano OR the jack's spring was lose off (break) there.


If the jack's spring was lose off  to reaset new spring it there.
Instruction for repairing a loose jack flange:

1. Remove 'the action' from the piano. Detach any pedal rods from the action. Locate the screws or nuts holding the action brackets to the piano’s plate. Remove these fasteners, tip the top of the action toward you, and lift the action out of the piano up by grasping the hammer rest rail and lifting.

2. Locate 'the whippen' (E3) that has the loose jack flange.

3. Disconnect that note’s bridle strap of the hammer from 'the bridle of the wire' on  the whippen.

4. From the back of 'the action', remove 'the whippen flange screw' and remove 'the whippen'.

5. Remove any loose glue of or other debris from 'the jack flange' and 'the whippen' check for a dry fit. Apply one drop of PVA glue to the whippen where 'the jack flange' will be attached. Be sure 'the jack flange' is properly aligned, 90 degrees to the whippen, and there is sufficient glue as indicated by some squeezing out. Let glue set a few minutes and remove any excess.

6. Reinstalling 'the whippen' can be a challenge. Be sure the jack spring is seated in 'the whippen' and 'the jack'. Pivot 'the jack' against 'the spring' enough to position it against 'the hammer butt leather' as 'the whippen flange' is also being positioned against 'the whippen rail'. It is often necessary to have 'the whippen flange screw' already in' the flange' due to interference with 'the damper spoon'. Attach 'the whippen flange' to the rail with the screw.

7. Keep 'the whippen' raised in the normal position until 'the bridle strap' is reattached to 'the bridle wire' or 'the jack' may jamb on 'the hammer'. On many pianos 'the bridle strap' threads through a hole on 'the hammer butt back stop'.

8. Check for proper operation of the repaired note(E).

9. Replace the action in the piano. There are a number of studs in the piano that the action brackets rest on – one stud for each bracket. Handling the action by the hammer rest rail and tipping the top of the action toward you, position the action brackets onto the studs. Often it is easiest to judge when the action is properly aligned by observing how the whippens will rest on the capstans. When the action brackets are resting on the studs, tip the top of the action  you toward the piano’s plate. Attach the action to the plate with the screws or bolts. Reinstall or re-position any pedal rods.