[quote user="bczoom"]I don't have a cab [
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How much water can you spray on the back window (is there a place for it to drain)?
They have windex stuff in a bottle that connects to a garden hose for cleaning outside windows. Would something like that work?
If that's too much, would high-pressure air from a compressor shot through the screen onto the glass remove the dust? I understand it wouldn't give a good cleaning but it may blow off the dust build-up.
[/quote]Now that you mention air,maybe I could use the high power leaf blower I have to knock the dust down a little.My little head is thinking now,I just might have to invent something to clean the rear window,stay tuned.coobie[*]