How to Clean and Lubricate a Casement Window Crank How to Clean and Lubricate a Casement Window Crank

What You'll Need
Wire Brush
Screwdriver
Toothbrush
Cleaning fluid
Grease
Rubber Gloves

The casement window crank is the system by which an arm moves the window in and out. If this casement window crank is old, or has been in a dirty or unused room, then you may find that the crank is stiff and difficult to move. In order to get it back into proper condition, you need to clean it out, and add some lubrication.

Step 1 - Take off the Crank and Clean

Remove the casement window crank arm by opening the window as far as possible, and pulling the arm out. Unscrew the arm gear from the bottom of the window if necessary. Clean out the gears by rubbing them with a wire brush, to remove rust, and then scrubbing with a toothbrush soaked in cleaning fluid. You should also scrub down the window at the same time. Clean the arm by wiping it in cleaning fluid, and then rubbing dry with a paper towel.

Step 2 - Lubricate the Crank

Now the casement window crank is clean, you can add some lubrication, such as car grease, to the arm and the gears, You may want to wear rubber gloves to apply, as it is very messy. Replace the arm into the casement.

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