Oxygen, anyone?

Paul462 · #1 09-23-07, 03:13 PM

It's time to overhaul the regulator (Puritan Bennett), valves, outlet packings and pressure gage from the oxygen system of our 1968 T337C. Anybody know where it's best to get this done?

Paul

Kim Geyer · #2 09-24-07, 02:47 PM

We send our stuff to HRD oxygen systems 661-295-0670
The bottles we take to our local fire equipment service guys for thier hydrostatic check. When you call HRD go ahead and order the seals for your outlets. The P/N's are 632010-00 seat and 632006-09 O-ring. You will need 1 of each for each outlet
Hope this helps
Kim

Paul462 · #3 09-25-07, 12:41 PM

Kim,

Thanks for the info! I'll call them.

Paul

Paul462 · #4 09-25-07, 02:16 PM

Kim,

HRD says they don't sell the O-ring or seat - could you tell me where you order them?

Thanks!

Paul

Paul462 · #5 09-25-07, 06:42 PM

... and how to get at the O-ring and seat to change them?

Thanks!

Paul

Kim Geyer · #6 09-26-07, 04:07 PM

From what I can figure from the paperwork I have is the Puritian Bennett was bought out by B/E Aerospace. The paperwork I have for the seals shows tha t B/E sold them to Satair USA in Atlanta Ga. That my be where we have to go to get them. It would make it easy if I remembered who I got them from but I bought 100 of each a couple of years ago and I just can't remember.
Changing them is easy. I take needle nose pliers and stick them in where the 2 little pins are and unscrew the center. Be careful because there is a spring and 2 nylon pieces that may fly out. Replacing the seals is a piece O cake. Then screw everything back in.
Kim

skymstr02 · #7 09-27-07, 07:35 AM

Quote:

Originally posted by Kim Geyer

Changing them is easy. I take needle nose pliers and stick them in where the 2 little pins are and unscrew the center. Be careful because there is a spring and 2 nylon pieces that may fly out. Replacing the seals is a piece O cake. Then screw everything back in.
Kim

What part of preventive maintenance is this? How does an owner document this in the log book?

Do you want to be counting on the oxygen system to be working when it fails because of an O ring not installed correctly?

If you do not have the training and certification to perform this maintenance action, you have absolutely no business working on a life support system. Servicing the bottle is different.

Paul462 · #8 09-30-07, 11:24 AM

Kim,

Thanks for the help! Sharing operational and maintenance experience is an invaluable advantage to this site, and our SOAPA organization.

We'll try to stop by and visit ya'll next time we fly over your area, and pick up some of your low-priced Avgas at your Orion Aviation location an Siler City Muni, NC 5W8.

Skymstr02: For guidance on maintenance you as owner can perform (subject to certain limitations, including the aircraft cannot be operated for hire): refer to 14 C.F.R. 43

Paul462 · #9 09-30-07, 11:28 AM

Skymstr02 (Cont'd.): For guidance on maintenance you as owner can perform (subject to certain limitations, including the aircraft cannot be operated for hire): refer to 14 C.F.R. 43.1, 43.3 et seq., and its Appendix A. CAUTION: If you don't know how to perform a proceduce, get training first. Improper performance of even a simple task like tightening and safetying an oil drain plug can cause oil loss and engine siezure.

skymstr02 · #10 09-30-07, 02:00 PM

That is correct, and performing any maintenance on an oxygen system is not included in 14CFR43 Appendix A. Ref 14CFR43.5 and .7

Perfoming maintenance on an aircraft and not entering it in the maintenance history of the aircraft is a violation of 14CFR43.9.

This is applicable to any aircraft operated in accordance with 14CFR91, regardless if it is for hire or not.