spg spindles removable?

fubari · 17th September 2006, 04:44

My pressure gauges were bubbling a little today, so I decided it was time to change the o-rings.
They gauge unscrewed readily enough, but I'll be darned if I can get the spindle out (Harlow's regulator book says not to force it, as they break easily). Is it actually removable from AP's hose-fitting (the part that mates w/the pressure-gauge)?

I did notice the circular base near the foot of the spindle seemed to rotate with the spindle itself, making me wonder if the spindle is built into the hose-fitting?

Or perhaps it is just corroded beyond repair and it is time to get a new hose?

John G.

GKAM · 17th September 2006, 06:00

Hi fubari,

This has nothing to do with the HP hose. You may change it only if it is worn in places.

The SPGs all have an insert that allows them to rotate freely. This insert is basicaly a plated brass tube that has one O-ring near each end. This tube sometimes has a ring in the middle. This is to ensure that 50% of the insert stays in the hose and 50% inside the SPG.

Simply pull that out carefully as to not damage it. Replace and/or lube the O-rings and stick it back in. If you are having difficulty removing it, dont try too hard as it is easy to bend the ends. Instead, Stick the hose end in some white vinegar for a few minutes. It should then be easier to remove the insert.

I hope my English is good enough to explain without a photo. Unofrtunately I don't have any pics of inserts with the ring/disk in the middle.

HTH
/George

Quote: (Originally Posted by fubari)

My pressure gauges were bubbling a little today, so I decided it was time to change the o-rings.
They gauge unscrewed readily enough, but I'll be darned if I can get the spindle out (Harlow's regulator book says not to force it, as they break easily). Is it actually removable from AP's hose-fitting (the part that mates w/the pressure-gauge)?

I did notice the circular base near the foot of the spindle seemed to rotate with the spindle itself, making me wonder if the spindle is built into the hose-fitting?

Or perhaps it is just corroded beyond repair and it is time to get a new hose?

John G.

***Beanie*** · 17th September 2006, 07:47

The other option is put the end of the hose into a box or something to catch the spindle and gently pressurise the hose - out it pops

***sadave*** · 17th September 2006, 08:59

Quote: (Originally Posted by Beanie)

The other option is put the end of the hose into a box or something to catch the spindle and gently pressurise the hose - out it pops

Just be VERY careful doing this... needless to say, it has the potential of coming out like a bullet if not done carefully...

divetheworld · 17th September 2006, 11:59

Quote: (Originally Posted by sadave)

Just be VERY careful doing this... needless to say, it has the potential of coming out like a bullet if not done carefully...

Oo!
Never thought of that.

I've got an idea, might involve the neighbours cat........

Nicholas von Rosen · 17th September 2006, 17:50

Quote: (Originally Posted by divetheworld)

Oo!

I've got an idea, might involve the neighbours cat........

You can read about the strange death of my nieghbours cat in the news tomorrow

Nick

manxdiver856 · 17th September 2006, 18:27

Be careful........i have seen apd use hp hoses with the spindle machined into the hose end and non-removeable

Steve

cool_hardware52 · 17th September 2006, 18:45

Quote: (Originally Posted by divetheworld)

Oo!
Never thought of that.

I've got an idea, might involve the neighbours cat........

Run Kitty, run!

***jradomski*** · 17th September 2006, 18:58

I would start with a good soak in white vinegar.. If all fails then you are going to have to pressurize the hose.. wrap the end in some towels, then put it in a box and cover it, and slowly pressurize the hose.. if it doesnt let go quickly it will have alot of pressure behind it so BE CAREFUL..

Gibbon · 17th September 2006, 23:41

Quote: (Originally Posted by jradomski)

I would start with a good soak in white vinegar.. If all fails then you are going to have to pressurize the hose.. wrap the end in some towels, then put it in a box and cover it, and slowly pressurize the hose.. if it doesnt let go quickly it will have alot of pressure behind it so BE CAREFUL..

I agree with the white vinegar and perhaps also a blast in an ultrasonic cleaning tank at the same time.

The pressure bit is really confusing me though

The hole in the spindle is much bigger than the hole at the other end of the hose where it goes into the 1st stage... so until he gets really desperate and blocks the hole with something fairly substancial I dont see there being much air flow or any pressure build up.

If you put your thumb over the end and seal the spindle then it may pop out.. if not then I suggest that the post above suggesting that the spindle may be machined into the hose end is probably correct, if it is a spindle that comes out then it is just crud around the Oring that is keeping it in.

You can borrow my thumb as it has already proved itself to be spindle proof, or perhaps I just got lucky

I think you will find kitty provides the perfect amount of resistance to the pressure, however I would want to ensure that I put the spindle through an autoclave after retrieving it, this also removes the need for expensive O2 lube.

To make it into a we-ap-on you will need to really seal the hole in the spindle. Good job no one has thought creating an automated version of this using this with a Drager reg on a fly-ing ma-ch-ine from the waitress's O2 supply.... suppose it makes no difference atm in the UK or USA eh DrMike.

17th September 2006, 06:00	#2 (permalink)
GKAM digital nomad Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: May 2005 Location: Greece Posts: 254	Re: spg spindles removable? Hi fubari, This has nothing to do with the HP hose. You may change it only if it is worn in places. The SPGs all have an insert that allows them to rotate freely. This insert is basicaly a plated brass tube that has one O-ring near each end. This tube sometimes has a ring in the middle. This is to ensure that 50% of the insert stays in the hose and 50% inside the SPG. Simply pull that out carefully as to not damage it. Replace and/or lube the O-rings and stick it back in. If you are having difficulty removing it, dont try too hard as it is easy to bend the ends. Instead, Stick the hose end in some white vinegar for a few minutes. It should then be easier to remove the insert. I hope my English is good enough to explain without a photo. Unofrtunately I don't have any pics of inserts with the ring/disk in the middle. HTH /George Quote: (Originally Posted by fubari) My pressure gauges were bubbling a little today, so I decided it was time to change the o-rings. They gauge unscrewed readily enough, but I'll be darned if I can get the spindle out (Harlow's regulator book says not to force it, as they break easily). Is it actually removable from AP's hose-fitting (the part that mates w/the pressure-gauge)? I did notice the circular base near the foot of the spindle seemed to rotate with the spindle itself, making me wonder if the spindle is built into the hose-fitting? Or perhaps it is just corroded beyond repair and it is time to get a new hose? John G. __________________ Stay #
(Online)

17th September 2006, 07:47	#3 (permalink)
*Beanie* Gallery Administrator Current Rebreather/s: Inspiration Classic Other Rebreather/s: Inspiration Vision Join Date: Jan 2005 Location: In da house! yeah baby! Posts: 3,292	Re: spg spindles removable? The other option is put the end of the hose into a box or something to catch the spindle and gently pressurise the hose - out it pops __________________ Beanie Gallery Admin & Library Assistant. www.outlawdivers.org.uk www.beandiving.co.uk www.beanengineering.co.uk
(Offline)

17th September 2006, 08:59	#4 (permalink)
*sadave* Administrator Current Rebreather/s: Sport Kiss Other Rebreather/s: Not Bought Yet Classic Kiss Join Date: Jun 2005 Location: Brisbane, Queensland Posts: 1,107	Re: spg spindles removable? Quote: (Originally Posted by Beanie) The other option is put the end of the hose into a box or something to catch the spindle and gently pressurise the hose - out it pops Just be VERY careful doing this... needless to say, it has the potential of coming out like a bullet if not done carefully... __________________ Wave!
(Online)

17th September 2006, 11:59	#5 (permalink)
divetheworld Dive porn pimp Current Rebreather/s: Inspiration Classic Other CCR Other Rebreather/s: Not Bought Yet Inspiration Classic Inspiration Vision Classic Kiss Other CCR Join Date: Mar 2005 Location: Leeds, England Posts: 1,630	Re: spg spindles removable? Quote: (Originally Posted by sadave) Just be VERY careful doing this... needless to say, it has the potential of coming out like a bullet if not done carefully... Oo! Never thought of that. I've got an idea, might involve the neighbours cat........ __________________ Attitude and self praise is no reccomendation. Dont try to be a great man, just be a man and let history be the judge of you. *WWW.NARKEDAT90.CO.UK* *http://www.grpservices.com/pursuit/* Supporting Shearwater Research Products in Europe
(Offline)

17th September 2006, 17:50	#6 (permalink)
Nicholas von Rosen Custom Title Allowed! Current Rebreather/s: Inspiration Vision Other Rebreather/s: Inspiration Classic Join Date: Jul 2005 Location: Helsingoer, Denmark Posts: 151	Re: spg spindles removable? Quote: (Originally Posted by divetheworld) Oo! I've got an idea, might involve the neighbours cat........ You can read about the strange death of my nieghbours cat in the news tomorrow Nick __________________ NICK
(Offline)

17th September 2006, 18:27	#7 (permalink)
manxdiver856 New Member Current Rebreather/s: Inspiration Classic Inspiration Vision Evolution Ouroboros Dolphin Azimuth Other Rebreather/s: Dolphin Azimuth Join Date: Nov 2005 Location: Isle of Man Posts: 17	Re: spg spindles removable? Be careful........i have seen apd use hp hoses with the spindle machined into the hose end and non-removeable Steve
(Offline)

17th September 2006, 18:45	#8 (permalink)
cool_hardware52 RBW Member Current Rebreather/s: Not Bought Yet Other Rebreather/s: Not Bought Yet Join Date: Mar 2005 Location: SoCal USA Posts: 392	Re: spg spindles removable? Quote: (Originally Posted by divetheworld) Oo! Never thought of that. I've got an idea, might involve the neighbours cat........ Run Kitty, run! __________________ www.deepseasupply.com
(Offline)

17th September 2006, 18:58	#9 (permalink)
*jradomski* Moderator Current Rebreather/s: Inspiration Classic Sport Kiss Optima rEvo Other CCR Other Rebreather/s: Inspiration Vision Evolution Megalodon Classic Kiss rEvo Other CCR Join Date: Mar 2005 Location: "Da" Bronx Posts: 3,095	Re: spg spindles removable? I would start with a good soak in white vinegar.. If all fails then you are going to have to pressurize the hose.. wrap the end in some towels, then put it in a box and cover it, and slowly pressurize the hose.. if it doesnt let go quickly it will have alot of pressure behind it so BE CAREFUL.. __________________ Joe Radomski CCR Trimix Instructor Trainer ANDI Instructor Trainer Director #10 All posts are personal opinions and DO NOT reflect any affiliated agency unless specifically stated.
(Offline)

17th September 2006, 23:41	#10 (permalink)
Gibbon Southern Monkey Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Aug 2005 Location: East Devon Posts: 224	Re: spg spindles removable? Quote: (Originally Posted by jradomski) I would start with a good soak in white vinegar.. If all fails then you are going to have to pressurize the hose.. wrap the end in some towels, then put it in a box and cover it, and slowly pressurize the hose.. if it doesnt let go quickly it will have alot of pressure behind it so BE CAREFUL.. I agree with the white vinegar and perhaps also a blast in an ultrasonic cleaning tank at the same time. The pressure bit is really confusing me though The hole in the spindle is much bigger than the hole at the other end of the hose where it goes into the 1st stage... so until he gets really desperate and blocks the hole with something fairly substancial I dont see there being much air flow or any pressure build up. If you put your thumb over the end and seal the spindle then it may pop out.. if not then I suggest that the post above suggesting that the spindle may be machined into the hose end is probably correct, if it is a spindle that comes out then it is just crud around the Oring that is keeping it in. You can borrow my thumb as it has already proved itself to be spindle proof, or perhaps I just got lucky I think you will find kitty provides the perfect amount of resistance to the pressure, however I would want to ensure that I put the spindle through an autoclave after retrieving it, this also removes the need for expensive O2 lube. To make it into a we-ap-on you will need to really seal the hole in the spindle. Good job no one has thought creating an automated version of this using this with a Drager reg on a fly-ing ma-ch-ine from the waitress's O2 supply.... suppose it makes no difference atm in the UK or USA eh DrMike.
(Offline)

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode