Servicing a YBOD

Mark Chase · 14th July 2005, 21:41

Folowing on form another thread...

What exactly sould be considered normal servicing for a YBOD and when / how long in between it being done.

I am replacing the cells on a 12monthly basis (unless i have a cell error) and replacing scrims and 0 rings as the need arises but i am curious to know what is considered normal servicing for this unit and how often it should be sent back to base at AP for a 'service' and what they do when they get it?

Is it necessary or can I do it my self (that was the plan)

ATB

Mark Chase

ROB DAVIE · 14th July 2005, 21:50

Quote: (Originally Posted by Mark Chase)

Folowing on form another thread...

What exactly sould be considered normal servicing for a YBOD and when / how long in between it being done.

I am replacing the cells on a 12monthly basis (unless i have a cell error) and replacing scrims and 0 rings as the need arises but i am curious to know what is considered normal servicing for this unit and how often it should be sent back to base at AP for a 'service' and what they do when they get it?

Is it necessary or can I do it my self (that was the plan)

ATB

Mark Chase

Mark,

Since you are changing the cells (12 to 18 mos) and the scrims and o-rings, you are doing the needed work. Don't forget to get at the magnets for the switches and put the clear nail polish on them.

After that, except for servicing the ADV, and normal service on the regs, that's about it until something actually breaks.

Barrie Law · 14th July 2005, 22:29

I would be working on roughly the same principle but I would add:

Stripping and 02 cleaning the solonoid and filter.

Checking the interstage pressures.

Cleaning the DIN fittings and cylinder Valve threads.

Cleaning the low pressure connectors male/female.

Strip and clean/lube the mouthpiece assembly.

And giving it a nice big hug

Cheers

ROB DAVIE · 14th July 2005, 22:44

Quote: (Originally Posted by Barrie Law)

I would be working on roughly the same principle but I would add:

Stripping and 02 cleaning the solonoid and filter.

Checking the interstage pressures.

Cleaning the DIN fittings and cylinder Valve threads.

Cleaning the low pressure connectors male/female.

Strip and clean/lube the mouthpiece assembly.

And giving it a nice big hug

Cheers

Barrie,

Good points all, especially if you have the IP gauge and tool. By all means don't forget the HUG.

**rigdiver** · 15th July 2005, 01:32

Does anybody have detailed pictures/directions on breaking down/cleaning the hoses and the o-rings?
Bill

iani · 15th July 2005, 04:53

Quote: (Originally Posted by rigdiver)

Does anybody have detailed pictures/directions on breaking down/cleaning the hoses and the o-rings?
Bill

Lots of good stuff on Mad Mole's site:

http://www.btinternet.com/~madmole/divemole.htm

Ian

Mark Chase · 18th July 2005, 11:45

Thanks and sorry for asking twice

I do all of the above (including the hug) so that’s cool. I did think it a bit odd when they moaned about the unit having no back to base service history

Till reading that post I had no intention of ever sending my one back unless it was faulty.

SERVICING O RINGS

Just to say, a dental pick is fantastic for getting these out but I just use a watch maker screw driver. I only replace them if I am getting an unfixable neg test but when I do I clean the plastic and groove with lint free cloth and I use the smallest possible amount of silicone on the ring. Fit the rear one first.

That’s about it really. Only problem I found with 0 rings was when I was using too much silicone grease and they just collected every hair and bit of grit going. Now I mainly use spit.

ATB

Mark Chase

**rigdiver** · 18th July 2005, 16:54

Quote: (Originally Posted by iani)

Lots of good stuff on Mad Mole's site:

http://www.btinternet.com/~madmole/divemole.htm

Ian

Ian;
Thanks for the directions. But for some reason the pics/instructions are not available now on mole's site.
Bill

***Decodiver*** · 18th July 2005, 17:18

Quote: (Originally Posted by Barrie Law)

Checking the interstage pressures.

I would recommend you do this monthly.

Cheers,

Dave Cooper.

14th July 2005, 21:41	#1 (permalink)
Mark Chase I go down for ages Current Rebreather/s: Classic Kiss Other Rebreather/s: Inspiration Classic Join Date: Jan 2005 Location: Kent Posts: 2,693	Servicing a YBOD Folowing on form another thread... What exactly sould be considered normal servicing for a YBOD and when / how long in between it being done. I am replacing the cells on a 12monthly basis (unless i have a cell error) and replacing scrims and 0 rings as the need arises but i am curious to know what is considered normal servicing for this unit and how often it should be sent back to base at AP for a 'service' and what they do when they get it? Is it necessary or can I do it my self (that was the plan) ATB Mark Chase __________________ Is it supposed to make that noise ? I took my unit to the dive shop and demanded they bolt on every thing that would fit. Join my elite diving teem and get a Tshirt "Doing It Chasey"Hammerhead Eccr Advanced Diving System
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14th July 2005, 21:50	#2 (permalink)
ROB DAVIE Administrator Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Feb 2005 Location: HOUSTON, REPUBLIC OF TEJAS Posts: 1,120	Quote: (Originally Posted by Mark Chase) Folowing on form another thread... What exactly sould be considered normal servicing for a YBOD and when / how long in between it being done. I am replacing the cells on a 12monthly basis (unless i have a cell error) and replacing scrims and 0 rings as the need arises but i am curious to know what is considered normal servicing for this unit and how often it should be sent back to base at AP for a 'service' and what they do when they get it? Is it necessary or can I do it my self (that was the plan) ATB Mark Chase Mark, Since you are changing the cells (12 to 18 mos) and the scrims and o-rings, you are doing the needed work. Don't forget to get at the magnets for the switches and put the clear nail polish on them. After that, except for servicing the ADV, and normal service on the regs, that's about it until something actually breaks. __________________ [SIZE=2]"CC Rebreathers will become a viable part of tech diving [U]WHEN PIGS FLY[/U]!!"--GI3[/SIZE]
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14th July 2005, 22:29	#3 (permalink)
Barrie Law RebreatherWorld Sponsor Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Jun 2005 Location: Ireland Posts: 726	Servicing a YBOD I would be working on roughly the same principle but I would add: Stripping and 02 cleaning the solonoid and filter. Checking the interstage pressures. Cleaning the DIN fittings and cylinder Valve threads. Cleaning the low pressure connectors male/female. Strip and clean/lube the mouthpiece assembly. And giving it a nice big hug Cheers __________________ Barrie Law Rebreather World Store Supplying the Rebreather World Tel:US +19548403892 Fax:US+19543333792 Tel:EU+442071930496 Fax:EU+442077606344 Mobile+353876880628 Skype:barrielaw Email: barrie@rebreatherworldstore.com
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14th July 2005, 22:44	#4 (permalink)
ROB DAVIE Administrator Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Feb 2005 Location: HOUSTON, REPUBLIC OF TEJAS Posts: 1,120	Quote: (Originally Posted by Barrie Law) I would be working on roughly the same principle but I would add: Stripping and 02 cleaning the solonoid and filter. Checking the interstage pressures. Cleaning the DIN fittings and cylinder Valve threads. Cleaning the low pressure connectors male/female. Strip and clean/lube the mouthpiece assembly. And giving it a nice big hug Cheers Barrie, Good points all, especially if you have the IP gauge and tool. By all means don't forget the HUG. __________________ [SIZE=2]"CC Rebreathers will become a viable part of tech diving [U]WHEN PIGS FLY[/U]!!"--GI3[/SIZE]
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15th July 2005, 01:32	#5 (permalink)
rigdiver LEARNING CONTINUALLY Current Rebreather/s: Inspiration Classic Other Rebreather/s: Megalodon Join Date: Mar 2005 Location: TEXAS Posts: 421	Does anybody have detailed pictures/directions on breaking down/cleaning the hoses and the o-rings? Bill
(Online)

15th July 2005, 04:53	#6 (permalink)
iani Nefarious Activist Current Rebreather/s: Ouroboros Other Rebreather/s: Inspiration Classic Join Date: Feb 2005 Location: Middlesex, UK Posts: 334	Quote: (Originally Posted by rigdiver) Does anybody have detailed pictures/directions on breaking down/cleaning the hoses and the o-rings? Bill Lots of good stuff on Mad Mole's site: http://www.btinternet.com/~madmole/divemole.htm Ian
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18th July 2005, 11:45	#7 (permalink)
Mark Chase I go down for ages Current Rebreather/s: Classic Kiss Other Rebreather/s: Inspiration Classic Join Date: Jan 2005 Location: Kent Posts: 2,693	Thanks and sorry for asking twice I do all of the above (including the hug) so that’s cool. I did think it a bit odd when they moaned about the unit having no back to base service history Till reading that post I had no intention of ever sending my one back unless it was faulty. SERVICING O RINGS Just to say, a dental pick is fantastic for getting these out but I just use a watch maker screw driver. I only replace them if I am getting an unfixable neg test but when I do I clean the plastic and groove with lint free cloth and I use the smallest possible amount of silicone on the ring. Fit the rear one first. That’s about it really. Only problem I found with 0 rings was when I was using too much silicone grease and they just collected every hair and bit of grit going. Now I mainly use spit. ATB Mark Chase __________________ Is it supposed to make that noise ? I took my unit to the dive shop and demanded they bolt on every thing that would fit. Join my elite diving teem and get a Tshirt "Doing It Chasey"Hammerhead Eccr Advanced Diving System
(Online)

18th July 2005, 16:54	#8 (permalink)
rigdiver LEARNING CONTINUALLY Current Rebreather/s: Inspiration Classic Other Rebreather/s: Megalodon Join Date: Mar 2005 Location: TEXAS Posts: 421	Quote: (Originally Posted by iani) Lots of good stuff on Mad Mole's site: http://www.btinternet.com/~madmole/divemole.htm Ian Ian; Thanks for the directions. But for some reason the pics/instructions are not available now on mole's site. Bill
(Online)

18th July 2005, 17:18	#9 (permalink)
*Decodiver* Administrator Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Jan 2005 Location: Geneva Posts: 2,197	Quote: (Originally Posted by Barrie Law) Checking the interstage pressures. I would recommend you do this monthly. Cheers, Dave Cooper. __________________ CCR/OC Trimix Instructor Trainer CCR Training to Mixed Gas in Switzerland, France, UK & Germany on Megalodon/COPIS-Megalodon/KISS/Sport KISS/Ouroboros/rEvo/Inspiration/Evolution/Sentinel www.zerogravitydiving.com Rebreather World Terms & Conditions
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