Yale Lockmaster Gearbox 

A replacement centre case for the Yale Lockmaster door lock mechanism. If you're having problems with your door lock, the gearbox is almost always the problem and replacing it with a Yale Lockmaster Gearbox is as simple as removing a few screws.

Yale Lockmaster Door Lock Gearbox Centre Case Double Spindle Information

• Important measurements: 35mm backset / 92mm/62mm PZ centres

• This is the mechanism inside the door that is operated by the handle

• Most likely to be the problem when a lock fails

• Reversible latch for left or right handed doors

• Double Spindle - for lever/ lever & lever/pad operation

Technical

A full technical diagram is included in the image gallery.