OK y'all...maybe I was lucky, but here's what worked for me.
My original back-up valve cracked into pieces, so the following applies ONLY to the new case kit I purchased to replace the outer three pieces, which as noted on this form, comes already assembled.
And, with a collar that seems to be impossible to unscrew.
After suffering extremely sore hands trying to unscrew the collar, I discovered this forum. I was ready to try the suggestions of WD-40, a strap wrench, boiling-then-a-cold-water dousing, etc.
But, before going to all that trouble, I tried a tried-and-true trick my late Mom taught me as a kid – when she couldn't get various jars and bottles (ketchup, pickles, beets, etc.) open in the kitchen: gently invert the jar or bottle and
tap around the circumference of the lid on a VERY hard surface (e.g., NOT a wood floor, Formica counter). The surface should ideally be so hard that it may (or may not) dent the metal top of a jar...doesn't matter if it does. I've never seen this method fail to work to open a jar. Sometimes, it takes multiple hits, all around the lid, sometimes REALLY hard. Then, grip it good and hard and off it twists!
With the Polaris collar, these are the simple steps I took:
- Put on a pair of synthetic latex (PVC) gloves. Your skin is much slipperier than these gloves...I believe your hands need the friction when removing this collar. You can buy a box of these gloves in the pharmacy department at any supermarket for a couple bucks.
- Holding the case by the longer end (on the right in the pic below), tap the edges of the collar on a HARD surface around its circumference multiple times. Let it sort of "bounce" on the surface from about six inches above the surface. I did this on our granite dining table. (My wife HATES to see me use this table for stuff like opening jars, cutting foamcore with an Exacto, etc...but HEY, it's granite. Nothing seems to hurt it!)
- After at least half a dozen strikes on the hard surface, give it a try. In my case, I was shocked to find that the collar twisted right off after just a few hits on the granite.
I hope this works for you as well as it did for me....SUCCESS!
Greg (Austin, TX)
