Best technique/method/penetrating oil for unscrewing 2nd stage from LP hose ?

[scubafanatic]

I just received a 'classic' Oceanic Omega II 2nd stage, which looks fine, but I'm having issues unscrewing the LP hose from the 2nd stage...I mean it's on their TIGHT ! (the hose is old and I'm swapping it out for a new, longer 'octo' hose, but cannot seem to get it unscrewed). Any suggestions ?

Thanks in advance,

Karl

 

[Tbar]

From looking at some images, if you remove the 'retaining cap' that screws onto the plastic body (near the LP hose) then the purge mechanism will come out. There is a flange that areas to have two flat sides that could take a large spanner/shifter then a smaller spanner on the hose and try to undo... With the purge (metal) parts removed from the plastic body some mild heat may help :/

---------- Post added August 25th, 2015 at 05:02 PM ----------

Here is the service manual. The procedure is to remove the mechanism and then use two spanners.

http://www.frogkick.dk/manuals/oceanic/12-2221-r02%20OMEGA2.pdf

 

[ajduplessis]

Use a bigger hammer

 

[runsongas]

try dunking the whole thing in your sonicator. could be some buildup in the threads.

 

[scubafanatic]

try dunking the whole thing in your sonicator. could be some buildup in the threads.

...alas, I'm fresh out of 'sonicators'. I'm exploring options, may end up at the LDS.

 

[buddhasummer]

Coke? The drink stuff not the snort stuff. I've used before with seized nuts and bolts with success.

 

[ams511]

Another method is alternating using heat and cold to break the tension. I would recommend disassembling the regulator so you only have the two stuck parts and alternate soaking in hot and cold water.

 

[tbone1004]

two wrenches, one on each side of the connection. Put one in a vice, and hit the other side with a dead blow hammer. Gives a similar effect to hitting it with the palm of your hand where you won't cause crazy vibrations but it has enough initial impact to try to shock something loose.

 

[Tbar]

As you plan to replace the hose you could carefully cut the retaining nut, some damage to the threads will no impact on the sealing as that o-ring is inside...