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Close the window winders and let it sit for about 30 minutes and then open them up again and spray the chains again. This should provide enough lubrication for your window winders.
If you don’t have success with that method, you can try to take off the chain and clean it as well as the inside of the window winder. I suggest using WD-40 Specialist Fast Acting Citrus Degreaser. This should melt and remove any excess buildup that might be on the chain or inside the winding mechanism of the unit. - EricL
An alternative to using the spray products is using some lithium grease into the worm gear and then using it sparingly on the chain @valandi. You'll get a longer lifespan out of that than from the spray products. - MitchellMc
I am in the process of removing and cleaning all my Whitco window winders and have been very successful. I removed the chain, sprayed with WD40 and left for 30 minutes.
I used a stiff brush (and occasionally a flat screwdriver) to remove all caked-on grease. After cleaning in hot soapy water (and rinsing well) I manually manipulated every link with a little more WD40 until they moved freely.
The cleaned ones now work like new. Clearly my problem was the dirty chains. Only issue was some of the cogs were damaged (limiting how far they open) and I've had black fingernails since. - LyndalW
Thank you for sharing your experience Lynda. To protect the moving parts of the winder, I suggest using Kincrome 500g Multipurpose Grease. This will cover and lubricate the parts plus, protect them from exposure to moisture. - EricL
From memory the Whitco ones we had were 'sealed', I had to drill out two rivets in the base plate to gain access.
I used one to make a crude pocket hole jig.
That was 2015 and the spare winders were from another house in the eighties - time flies.
Cheers
