07411 496213No call-out fee

Last updated: March 2026

Multi-point lock specialists

Door Mechanism Repair in Manchester

The mechanism is the heart of your door's locking system. When the gearbox strips, the shootbolts jam, or the handle goes floppy, your door becomes either impossible to lock or impossible to open. Either way, you have a problem that needs sorting fast. We repair and replace door mechanisms across Greater Manchester every single day, and we carry the most common types in our van for same-day fixes.

Multi-point locking mechanisms are fitted to almost every modern uPVC, composite and aluminium door. They contain a central gearbox that drives multiple locking points around the door frame when you lift the handle and turn the key. These mechanisms work hard, and after thousands of cycles they can fail. We have been fixing them for over a decade and know exactly what to look for.

Call 07411 496213 Get a Free Quote
Multi-point door mechanism gearbox being repaired in Manchester
Multipoint lock mechanism fitted by MA Door Repairs

How We Repair Door Mechanisms

A door mechanism replacement is one of the most common jobs we do, and for good reason. These multi-point systems are mechanical devices with moving parts, and they are under constant stress every time you lock and unlock your door. The gearbox in the centre is usually the first component to fail. It contains small metal cogs and springs that wear down over time, eventually stripping or snapping altogether.

When we arrive, we strip the door down to access the mechanism, identify the exact make and model, and fit a like-for-like or compatible replacement. Getting the right mechanism is critical. There are hundreds of different types on the market, and they vary by backset, centres, length, and connection type. We measure everything on site and carry a wide stock of the most popular brands including Yale, Mila, Fuhr, GU, Lockmaster and Saracen.

We also check the condition of the keeps, rollers, and hook bolts around the frame. There is no point fitting a brand new gearbox if the locking points it drives are damaged or misaligned. We make sure the entire system works as it should before we leave, and test it multiple times to confirm smooth operation.

The whole job typically takes between 45 minutes and two hours depending on the mechanism type and door construction. We clean up after ourselves, dispose of the old parts, and make sure you are happy with how the door operates before we finish. Every mechanism we fit comes with our 12-month guarantee.

Common Mechanism Faults

These are the signs that your door mechanism needs attention. Catching them early can save you money.

Handle lifts but door will not lock
This is the classic sign of a stripped gearbox. You lift the handle and feel little or no resistance, and the locking points around the frame do not engage. The internal cogs have worn through and the gearbox can no longer drive the shootbolts and hooks. This leaves your door effectively unlocked even though it looks closed. We replace the gearbox and have your door locking securely again, usually within an hour or two.
Key turns but nothing happens
When the key spins freely in the cylinder without engaging the deadbolt, the connection between the cylinder and the gearbox has failed. This could be a broken tailpiece on the cylinder, a damaged cam in the gearbox, or both. We check both components and replace whatever is needed. Sometimes a new cylinder is all it takes; other times the gearbox needs swapping too.
Door locked shut and will not open
A jammed mechanism can trap you inside or lock you out entirely. The shootbolts or hooks have extended into the frame keeps but the gearbox has failed, so they cannot be retracted. We have specialist tools and techniques to release a jammed mechanism without damaging your door or frame. Once we have the door open, we replace the failed mechanism on the spot.
Handle feels stiff or grinds
Stiffness in the handle is an early warning sign. The gearbox is starting to wear, and it is taking more force to drive the locking points. If you catch it at this stage, we can sometimes service the mechanism rather than replace it entirely. But if the grinding is severe, replacement is the better option before it fails completely and leaves you locked out.
Locking points not reaching the keeps
If the hooks or rollers extend but do not fully engage in the frame keeps, the door is not secure even though it feels locked. This can happen when the door has dropped slightly on its hinges or the mechanism has lost some of its travel. We adjust the hinge positions, re-align the keeps, and if needed fit a new mechanism to restore full engagement at every locking point.

Why Choose Us for Mechanism Repairs

Mechanism replacements are our bread and butter. Here is what sets us apart.

Van-Stocked Parts

We carry the most common mechanism brands and sizes in our van. No waiting days for parts to arrive.

Exact-Match Fitting

We measure backset, centres, and length on site to ensure a precise replacement. No bodging or adapting.

No Call-Out Fee

We come out, diagnose the problem, and quote for free. You only pay if you want us to go ahead.

12-Month Guarantee

Parts and labour guaranteed for a full year. If the mechanism fails within that time, we replace it free.

All Door Types

uPVC, composite, aluminium, timber. We work on mechanisms for every type of door on the market.

Jammed Door Experts

Locked in or locked out by a failed mechanism? We release jammed doors without causing damage.

Mechanism Repair Pricing

Labour starts from £69. No call-out fee. A typical multi-point mechanism replacement including parts runs between £120 and £200 depending on the brand and type. We always confirm the price before starting work.

Related Services

uPVC Door Repairs

Full uPVC door repair service including handles, hinges, panels and letterboxes.

Lock Replacement

Upgrade your cylinder to anti-snap, anti-pick security when we replace your mechanism.

uPVC Mechanism Replacement

Specialist uPVC window and door mechanism replacement. Espagnolette and cockspur handles.

Door Mechanism Playing Up?

Do not wait until it fails completely. Call us now and we will get your door locking properly again, usually the same day.

Call 07411 496213
Call Now: 07411 496213