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Discussion of diving methods and equipment available prior to the development of BCDs beyond the horse collar. This forum is dedicated to the pre-1970 diving.
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treasureman
Master Diver
Posts: 412
Joined: Thu Aug 04, 2005 12:53 pm
Location: Ottawa Canada
Contact: Website

Mistral help

Fri Oct 20, 2006 10:30 pm

Ok I ran into a block. there is a tiny tiny tiny o ring, actually tyhe only o ring in the dw mistral and it is in the pathway the hp pin travels. How the heck do i get it out to replace it.

I got one of VDh rebuild kits and trying to rebuild it. This is the only stumbling block so far
NAVED # 133...

Bon Vivant, and treasure finder

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Nemrod
VDH Moderator
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Joined: Sat Jun 25, 2005 1:53 pm
First Name: James
Location: Kansas

Sat Oct 21, 2006 2:22 am

Well, I use a small plastic pick. You must be careful not to damage the sealing surface.

James

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fishb0y
Lung Diver
Posts: 68
Joined: Sun Apr 30, 2006 3:46 pm
Location: Poulsbo, WA

Sat Oct 21, 2006 3:24 am

I have a set of picks I bought from www.scubatools.com. Have fun!!!

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Robohips77
Master Diver
Posts: 814
Joined: Mon Jul 17, 2006 5:26 pm
Location: Southwest in the Buckeye State

o-ring

Sat Oct 21, 2006 9:26 am

I use a number 9 crochet hook, plastic one, not aluminum, and you usually can get them in the yarn department of most Wal marts, meijers, etc. The hook is not sharp and won't scratch any sealing surfaces and can be slid on the outside of the old o-ring hooked and removed. Hope this helps. RVF

duckbill

Mon Oct 23, 2006 2:13 am

I have also been looking for the perfect solution to this same question. I like the crochet hook idea. I'll try it next time.

Don't panic, though, if you do happen to scratch the surface inside where the o-ring lies. All is not lost. It really isn't a critical seal and it won't hurt a bit if a bubble or two slip past the o-ring. As far as I can tell, that o-ring just provides a sliding/centering surface for the pin to ride on, and a good seal to cause the air to divert through the venturi tube. But, try your best not to scratch it. Plastic is good.

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Bryan
Plank Owner
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First Name: Bryan
Location: Wesley Chapel Florida
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Mon Oct 23, 2006 10:05 am

But... if you scratch or gouge the volcano orifice side while removing the O-ring you can easily ruin the body on the regulator for good..... Stick with plastic or soft brass till you have done it a few times. You will also do youself a favor during re-install and get a red tube from a can of WD-40 or an orange stick/wooden dowel of the same diameter and slide it just through to the other side of the volcano orifice. This will help line up the O-ring when you are trying to re-install it and keep it from wanting to come to a point and go on through the orifice.....

Works for me.....Then again you have to ask yourself what would I know about it....
Doing it right should include some common sense, not just blindly following specs and instructions. .Gary D, AWAP on SB

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treasureman
Master Diver
Posts: 412
Joined: Thu Aug 04, 2005 12:53 pm
Location: Ottawa Canada
Contact: Website

Mon Oct 23, 2006 8:06 pm

makes perfect sense... wish i had done it that way myself.. I went from the top lubed or ing with christo lube and it went in fairly easy, but took five minizzles
NAVED # 133...

Bon Vivant, and treasure finder

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