How do you replace a casement window sash?
Step #1: Sash Removal
- Remove screen and grille (if any) and crank sash fully open (ninety degrees).
- Remove and save "operator arm to drag link" 'E' clip. Be careful not to damage clip when removing.
- Note how upper and lower stabilizer arm screws and bushings are installed at head and sill.
- Remove and save upper and lower stabilizer arm screws and bushings.
- Remove and save "stop" crew from upper track.
- Crank operator handle to retract operator arm fully under wood sill cover.
- Keeping sash straight out and straight up, slide sash toward the strike side of the window unit until top and bottom slide shoes disengage from tracks.
- Lay damaged sash on flat surface.
- Note how hinge linkage is installed on both top and bottom of sash and note location of lock strike.
- Remove hinge linkage from damaged sash and reinstall on new sash at same locations as old sash.
- Note: If replacement sash provides a new lock strike, install it and discard it with damaged sash, otherwise, remove lock strike from damaged sash and reinstall at same location on new sash.
Step #2: Sash replacement:
- With hardware installed on new sash, position sash bottom on sill and position top slide shoe onto upper track at strike side of window unit.
- Repeat for bottom slide shoe.
- Keeping sash straight out and straight up, slide the sash to approximately 3" from hinge side of window unit.
- Reinstall sash stop screw to upper track.
- Reattach top and bottom stabilizer arms using the screws and bushings from damaged sash.
- Crank operating handle until operator arm is positioned so the draglink can be placed over the pin at the end of the operator arm.
- Reinstall 'E' clip.
- With lock latch open, crank sash to closed position and lock the latch. Reinstall grille and screen (if any).