Hog 2nd stage service question...

[theiszy]

Ive serviced both my hog classic 2nd stages - i got them second hand and needing much love at the time - I haven't touched the 1st stage as I bought it new (i have dived with it a few times).

One second stage (the primary), has come up really well l, passed all the require testing. But the other 2nd stage wont "freeflow" when the venturi is turned to "max". If I turn the orifice any more anti clockwise it will hiss and leak air. Other than that It works and breathes really well.

I suppose it doesnt purge as well as the primary first stage, but if I wasnt comparing them Id say it was fine.

The only thing in can think of is that maybe the leaver is bent?
Could there be any other reason for this?

 

[guruboy]

This is with a new seat?

 

[theiszy]

Yes.... and no....
I got this 2nd stage about 12month ago, put a new parts kit in then. Hadnt used it for a few months so pulled it apart recently gave it a good clean and re-lubed the orings.
When i serviced it the first time I dont think it would go onto free flow then either, but honestly im not really sure.

 

[guruboy]

Which generation 2nd stage?

What mouthpiece is on it?

 

[theiszy]

I have no idea, they lookd pertty old when i got them, or maybe just not very well taken care of. They (i purchased 3), had plain black short mouthpieces (i got rid of them).

 

[theiszy]

I do have a 3rd that i can use parts from of needed.

 

[guruboy]

What does the exhaust port look like?

 

[runsongas]

could be due to difference in lever height or balance spring tension also. check the lever height first.

 

[_Ralph]

Could be wear on the seat, especially after a year of tension, which means there is more tension on the system, as it has to travel farther to 'open up'....

I find some of my hog 2nds don't 'free flow' when properly tuned with new kits. They're close however (probably spring tension)

_R

 

[theiszy]

Thanks for the replies. Ill have a bit more of a play with it. I think its pretty good as is but will se if i can fine tune is any more.