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Person holding a cylindrical door-lock assembly beside an open green glazed door with its lower lock opening exposed. — Seized & Jammed Lock Opening, Kennedy Park
Person holding a key beside a brass-colored deadbolt on an open painted door while another person watches from inside. — Home Lockout Service, Kennedy Park

Lockouts · Kennedy Park

Seized & Jammed Lock Opening in Kennedy Park

The key turns a full circle without any resistance and the deadbolt stays exactly where it is.

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In plain words

Most seized locks can be saved, and keeping your existing hardware is the aim. A cylinder that has stopped turning is usually recoverable with cleaning and fresh internal parts. A failed tailpiece is a small component swapped without touching the rest of the lock. A bolt bound by the door needs adjustment, not new hardware. Replacement is the answer for a plug or shell that is worn, damaged or hollowed out by corrosion beyond what cleaning and parts can fix, and then the new cylinder is matched to your keyway and finish and, where possible, keyed to the key already in your pocket.

Sound familiar?

The old mortise lock on the front door of the house turns the key halfway and stops with a dull clunk. It has been getting harder for months, and the brass key is starting to show a bend.

How the visit goes

Seized & Jammed Lock Opening

How the visit goes

Roll-up black cloth pouch lying open on a worn wooden bench, holding thin metal probes and hooked tools in separate pockets. — Kennedy Park
Technician in safety glasses holding a steel deadbolt with a keyway beside a splintered door edge and a tool case. — Kennedy Park
  1. The key in your hand

    Before blaming the lock, the locksmith looks at the key. A key that has been copied from another copy several times drifts away from the true cuts, a worn key no longer lifts the pins to the shear line, and a bent key binds before it is fully seated. If an original or a rarely used spare exists, it is tried; a lock that opens with the spare has told you the problem. Some cylinders also retain the key until the plug is returned to its neutral position, and a key that seems trapped may simply be a plug that has not come back. A fresh key cut from the code is a common outcome.

  2. Proving it with the door open and shut

    The job is finished with testing rather than with the last screw. The bolt is thrown and drawn back with the door open to prove the lock itself, then with the door closed to prove the door and strike, then from the inside with the thumb-turn or lever. Every key you hold is tried, including the spare from the drawer. If the door is a main exit, the locksmith confirms it opens from inside with one motion and no key. Any hardware that was adjusted is cycled a dozen times to make sure it stays put, and the finish is wiped clean of cleaner and lubricant.

  3. A lock that turns with two fingers

    You leave with a lock that operates the way it did when it was new: the key seats fully, the plug turns without a wiggle, the bolt throws and retracts through its whole travel, and the door closes and locks without a shoulder. The locksmith has cycled it from both sides and with every key, and has shown you where the trouble was, whether that was a gritty keyway, a broken tailpiece or a strike plate a few millimetres out. If you had a habit of lifting the door or pulling it toward you to lock it, that habit is now retired.

Seized & Jammed Lock Opening

In the van

  • Replacement cylinder

  • Electronic contact cleaner

  • Replacement tailpiece or cam

  • Key blanks and code cutter

  • Plug follower and repinning kit

Person seated at a wooden table examining a brass mortise lock body, with a tool roll, small lock parts and a mug. — Kennedy Park

Seized & Jammed Lock Opening

What affects the quote

  1. Type of lock on the door

    A residential deadbolt, a knob latch, a lever set, a mortise case in an older house and a high-security cylinder each take different tools and time to open and to service.

  2. Cutting fresh keys

    If a worn key was part of the trouble, keys cut from the code or a fresh master are counted individually, so say how many the household or staff need.

  3. Which part is jammed

    A bolt pinned by the door, a cylinder clogged with grit and a broken tailpiece are three different jobs with three different amounts of work, and the quote follows the diagnosis rather than the symptom.

What to have ready

  • Does the key go fully in and refuse to turn, or turn without moving the bolt?
  • Has there been a thaw and freeze, or a stretch of humid weather, this week?
  • Does the lock work if you push, pull or lift the door while turning the key?
Call (289) 806-9103

Seized & Jammed Lock Opening: questions

Questions
How long does a jammed lock opening take?

It depends on which family the jam belongs to. A bolt bound by the door is often freed in minutes and the adjustment afterwards takes a little longer. A seized cylinder needs patient cleaning before it turns and a bench service after, and a frozen one needs thawing time. A tailpiece swap is short once the door is open; a mortise case service is longer. The locksmith gives a sense of the time once the cause is identified at the door.

My key turns all the way round but the bolt stays put. What has broken?

The key and cylinder are doing their job; the bar behind the cylinder that drives the bolt, called the tailpiece or cam, has broken, slipped or twisted out of engagement. It is a small part. The locksmith retracts the bolt through the mechanism or removes the cylinder to reach it, then fits a tailpiece of the right length and profile. Your cylinder and keys are unchanged afterwards.

What is a tailpiece, and why does it matter here?

The tailpiece is the flat bar that sticks out of the back of a deadbolt cylinder and turns the bolt mechanism when the key turns; on a knob or lever set the equivalent part is a cam or spindle. It carries all the twisting effort, so a bent, worn or broken one is the reason a key can turn without anything happening. It is a small part to replace, it comes in several lengths, and the right length matters.

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