Tighten Your Nuts

rdmmdr · 4th January 2007, 09:40

beanie

The tread was for lines that had not been taken apart in three months. Not owning the unit in question, I was just suggesting what the aviation industry has made common practice. mark the bolt, bolt moves , bolt is loose , why is bolt loose, figure out why bolt is loose.

i have woken up in the middle of the night and called dispatch, so that they could ask the line mech to check something that i had done on an aircraft. it was about every six months that i had that feeling that made me make the call. There was never a problem. A newbee boss chewed my butt one time i made the call, but one of the old timers saved me. his statement was, there are five hundred people on the aircraft, and if any one of my people has a single question on it's ability to fly, it does not fly!

so when you prep your units forget that you are preping for yourself, you are preping that unit for your children.

anal is good. While i dont take apart my lines, they are all torqued marked. so i don't have to.

rick

decoweenie · 4th January 2007, 09:43

Quote: (Originally Posted by UKSteve)

Not convinced...unless Graham leaves the head connected to the O2 IP hose at all times when changing out the scrubber etc. That connection is released every time I remove the scrubber from the case.

Of course I can't answer for Graham, so he will do it later on.

BTW, I have seen plenty of people simply undone the lid, slip out the scrubber bottom and leave the lid hanging in the case.

UKSteve · 4th January 2007, 09:49

Quote: (Originally Posted by decoweenie)

BTW, I have seen plenty of people simply undone the lid, slip out the scrubber bottom and leave the lid hanging in the case.

OK...I stand corrected...never seen anyone do that.. their heads must be a damned sight looser in the bucket than mine!!

Steve

decoweenie · 4th January 2007, 09:56

Quote: (Originally Posted by UKSteve)

...never seen anyone do that...

It is usually done on live-aboard trips when you simply want to change the sorb quickly between dives.

Flip the unit around, take off the scrubber bottom, remove the sorb insert, take it down-wind to change, come back and re-install everything.

Otherwise, when at home, I take everything apart and clean/lub everything each time I change sorb since I have a few days to do it...

But Graham could always come back and prove me wrong though...

UKSteve · 4th January 2007, 10:12

No worries Phi... I'm always happy to learn new tricks / techniques... and in light of what you said then I concur..it probably was the knurled nut...and deff. should be checked for tightness before a dive.

Steve

***Beanie*** · 4th January 2007, 10:20

Quote: (Originally Posted by UKSteve)

No worries Phi... I'm always happy to learn new tricks / techniques... and in light of what you said then I concur..it probably was the knurled nut...and deff. should be checked for tightness before a dive.

Steve

yep I had one go before a dive after checking that my unit was all set up - first dive of the week. Quiet scary to have something go bang behind you head when your kitting up

decoweenie · 4th January 2007, 10:45

Quote: (Originally Posted by Beanie)

yep I had one go before a dive after checking that my unit was all set up...

Same as OC, if the o-ring blows then the "boom" will happen when pressurized...

grahamsp · 5th January 2007, 00:04

Quote: (Originally Posted by UKSteve)

I'm starting to wonder exactly what came loose? Was it the knurled head connection between the head and the LP O2 hose or did the whole fitting come loose from the head?

The knurled head, not the fitting itself. That's solid.

Graham

grahamsp · 5th January 2007, 00:05

Quote: (Originally Posted by UKSteve)

Phi,

Not convinced...unless Graham leaves the head connected to the O2 IP hose at all times when changing out the scrubber etc. That connection is released every time I remove the scrubber from the case.

Yup, I do.

UKSteve · 5th January 2007, 08:47

Quote: (Originally Posted by grahamsp)

Yup, I do.

Graham,

No worries mate.. my appologies for missunderstanding the issue.

Steve

4th January 2007, 09:40	#11 (permalink)
rdmmdr designer of death Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Mar 2006 Location: kerman,california Posts: 372	Re: Tighten Your Nuts beanie The tread was for lines that had not been taken apart in three months. Not owning the unit in question, I was just suggesting what the aviation industry has made common practice. mark the bolt, bolt moves , bolt is loose , why is bolt loose, figure out why bolt is loose. i have woken up in the middle of the night and called dispatch, so that they could ask the line mech to check something that i had done on an aircraft. it was about every six months that i had that feeling that made me make the call. There was never a problem. A newbee boss chewed my butt one time i made the call, but one of the old timers saved me. his statement was, there are five hundred people on the aircraft, and if any one of my people has a single question on it's ability to fly, it does not fly! so when you prep your units forget that you are preping for yourself, you are preping that unit for your children. anal is good. While i dont take apart my lines, they are all torqued marked. so i don't have to. rick
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4th January 2007, 09:43	#12 (permalink)
decoweenie Crash Test Dummy Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Feb 2005 Location: Cairo Posts: 5,510	Re: Tighten Your Nuts Quote: (Originally Posted by UKSteve) Not convinced...unless Graham leaves the head connected to the O2 IP hose at all times when changing out the scrubber etc. That connection is released every time I remove the scrubber from the case. Of course I can't answer for Graham, so he will do it later on. BTW, I have seen plenty of people simply undone the lid, slip out the scrubber bottom and leave the lid hanging in the case. __________________ "...after a while you get bored offering advice to a bull that like to keep butting the fence with its head rather than walking through the open gate..." - Rebreather World PM
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4th January 2007, 09:49	#13 (permalink)
UKSteve Steve Collard Current Rebreather/s: Inspiration Vision Other Rebreather/s: Join Date: Jul 2005 Location: Weymouth, UK Posts: 606	Re: Tighten Your Nuts Quote: (Originally Posted by decoweenie) BTW, I have seen plenty of people simply undone the lid, slip out the scrubber bottom and leave the lid hanging in the case. OK...I stand corrected...never seen anyone do that.. their heads must be a damned sight looser in the bucket than mine!! Steve
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4th January 2007, 09:56	#14 (permalink)
decoweenie Crash Test Dummy Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Feb 2005 Location: Cairo Posts: 5,510	Re: Tighten Your Nuts Quote: (Originally Posted by UKSteve) ...never seen anyone do that... It is usually done on live-aboard trips when you simply want to change the sorb quickly between dives. Flip the unit around, take off the scrubber bottom, remove the sorb insert, take it down-wind to change, come back and re-install everything. Otherwise, when at home, I take everything apart and clean/lub everything each time I change sorb since I have a few days to do it... But Graham could always come back and prove me wrong though... __________________ "...after a while you get bored offering advice to a bull that like to keep butting the fence with its head rather than walking through the open gate..." - Rebreather World PM
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4th January 2007, 10:12	#15 (permalink)
UKSteve Steve Collard Current Rebreather/s: Inspiration Vision Other Rebreather/s: Join Date: Jul 2005 Location: Weymouth, UK Posts: 606	Re: Tighten Your Nuts No worries Phi... I'm always happy to learn new tricks / techniques... and in light of what you said then I concur..it probably was the knurled nut...and deff. should be checked for tightness before a dive. Steve
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4th January 2007, 10:20	#16 (permalink)
*Beanie* give a man an inch....... Current Rebreather/s: Inspiration Classic Other Rebreather/s: Inspiration Vision Join Date: Jan 2005 Location: In da house! yeah baby! Posts: 3,248	Re: Tighten Your Nuts Quote: (Originally Posted by UKSteve) No worries Phi... I'm always happy to learn new tricks / techniques... and in light of what you said then I concur..it probably was the knurled nut...and deff. should be checked for tightness before a dive. Steve yep I had one go before a dive after checking that my unit was all set up - first dive of the week. Quiet scary to have something go bang behind you head when your kitting up __________________ Beanie Gallery Admin & Library Assistant. www.outlawdivers.org.uk www.beandiving.co.uk www.beanengineering.co.uk 0871 242 7808
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4th January 2007, 10:45	#17 (permalink)
decoweenie Crash Test Dummy Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Feb 2005 Location: Cairo Posts: 5,510	Re: Tighten Your Nuts Quote: (Originally Posted by Beanie) yep I had one go before a dive after checking that my unit was all set up... Same as OC, if the o-ring blows then the "boom" will happen when pressurized... __________________ "...after a while you get bored offering advice to a bull that like to keep butting the fence with its head rather than walking through the open gate..." - Rebreather World PM
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5th January 2007, 00:04	#18 (permalink)
grahamsp New Member Current Rebreather/s: Evolution Other Rebreather/s: Join Date: Jun 2005 Location: Sydney, Australia Posts: 113	Re: Tighten Your Nuts Quote: (Originally Posted by UKSteve) I'm starting to wonder exactly what came loose? Was it the knurled head connection between the head and the LP O2 hose or did the whole fitting come loose from the head? The knurled head, not the fitting itself. That's solid. Graham
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5th January 2007, 00:05	#19 (permalink)
grahamsp New Member Current Rebreather/s: Evolution Other Rebreather/s: Join Date: Jun 2005 Location: Sydney, Australia Posts: 113	Re: Tighten Your Nuts Quote: (Originally Posted by UKSteve) Phi, Not convinced...unless Graham leaves the head connected to the O2 IP hose at all times when changing out the scrubber etc. That connection is released every time I remove the scrubber from the case. Yup, I do.
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5th January 2007, 08:47	#20 (permalink)
UKSteve Steve Collard Current Rebreather/s: Inspiration Vision Other Rebreather/s: Join Date: Jul 2005 Location: Weymouth, UK Posts: 606	Re: Tighten Your Nuts Quote: (Originally Posted by grahamsp) Yup, I do. Graham, No worries mate.. my appologies for missunderstanding the issue. Steve
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