The upvc window lock below shows one of many different types.
How to replace window lock mechanism.
The sash keeper is the locking mechanism that the window lock hardware fits into.
A upvc window lock mechanism is the gearing part inside a window that s driven by a handle.
Remove the old sash locks by drilling out the rivets that hold the locking mechanism in place.
Take photographs of the broken sash locks and make a detailed sketch of the locks with key dimensions noted.
Using a flat screwdriver grip the seal around the window frame and pull it out around the area of the window lock or push the seal down and out of its groove.
Compare the new operator with the old making sure they match.
If the window opens from the right locate the sash keeper in the bottom left corner.
Dimension a backset dimension b mushroom height dimension c rail length dimension d rail width click on link below the long metal plate is the rail and the part in the centre of the.
Carefully pry up the casing so you don t damage the wood parts.
White plastic window lock with spring loaded tilt latch 2 pack.
If there aren t any trim screws the casement cover is probably nailed or stapled in place.
Send photos and sketch to a window parts dealer who will provide you with exact match replacement locks.
Lock mechanism replacement procedure is complete.
Push latch back into lock mechanism housing.
If the window opens from the left hand side look for the sash keeper in the bottom right corner.
Grasp latch pull outwards slightly and rotate 180.
Now the seal has been removed use a torch to see into the now empty groove and insert a small allen key into the gap between the frame and sash.
Remove the two screws holding the window handle and remove the window handle using a wide paint scraper don t use a flat screwdriver as it will damage the frame insert it between the frame seal.
Apply pressure on the paint scraper to pry between the frame and the sash until a small gap appears.
Slide a stiff putty knife between the window jamb and casement cover.