Info on the PT - 015 housing . .

[Zorrr2]

Good morning all . .

Was hoping I get get some insights as to how to keep my PT-015 housing in top shape. Just got back from a week trip a few weeks back and have already soaked housing in distiled water for a day . . . worked all the controls (while under water) repeatedly . . . and throughly dryed it when finished. I have removed the O-RINGS and cleaned then and the channels they rest in (And yes . . . I do keep them out in individual storage bags until they are next needed.)

Now a question . . . how can I get some type of (I am guessing) silicon onto the O-RINGS on all the controls . . . I would like to lube thoughs as well . . some how . . ??

I thought I remembered seeing some one on here some time back stating how to remove the O-RINGS from the housing yourself . . is this the only way to do this . . ????

Greatly appreciate any help . . . Mark

 

[jlyle]

You can use a toothpick to apply a small amount of silicone to the outside of the buttons. Working the buttons in-and-out will distribute the lubricant where you want it. [caution: don't use spray silicone; the propellant will soften the o-ring material. If spray is all you have, spray some into a small container and wait a minute for the propellant to evaporate before using.]

The weakest link in your PT-015 is the mode/off-on dial. Look for any salt on top of the clear plastic cap that grips the mode dial inside the housing. If you see any, or if you notice that turning the camera on or off, while in the housing, also moves the mode dial, you need to disassemble, clean, relube, and put back this particular fitting. It's easy to do with a small Phillip's screw driver.

Dave Greenway's article on servicing all the orings is in the Library on digitaldiver.net -

http://www.digitaldiver.net/lib_docs/PT--015_service.pdf

I've had my housing for more than two years and a couple of hundred dives. The only maintenance I've done beyond what you are doing is work on the mode/off-on dial.

 

[Zorrr2]

You can use a toothpick to apply a small amount of silicone to the outside of the buttons. Working the buttons in-and-out will distribute the lubricant where you want it. [caution: don't use spray silicone; the propellant will soften the o-ring material. If spray is all you have, spray some into a small container and wait a minute for the propellant to evaporate before using.]

The weakest link in your PT-015 is the mode/off-on dial. Look for any salt on top of the clear plastic cap that grips the mode dial inside the housing. If you see any, or if you notice that turning the camera on or off, while in the housing, also moves the mode dial, you need to disassemble, clean, relube, and put back this particular fitting. It's easy to do with a small Phillip's screw driver.

Dave Greenway's article on servicing all the orings is in the Library on digitaldiver.net -

http://www.digitaldiver.net/lib_docs/PT--015_service.pdf

I've had my housing for more than two years and a couple of hundred dives. The only maintenance I've done beyond what you are doing is work on the mode/off-on dial.

Thanks for the info . . !!!

An additional question . . seems I remember some one giving very detailed instructions on replacing and ordering the O-RINGS for this housing . . . anyone out there by chance have the addresses save to these articals . . ????

 

[jlyle]

Thanks for the info . . !!!

An additional question . . seems I remember some one giving very detailed instructions on replacing and ordering the O-RINGS for this housing . . . anyone out there by chance have the addresses save to these articals . . ????

That would be me:

All o-rings BUNA 70 (aka nitrile)

buttons:

seventeen orings, order number OR-2.8X1.9 from Maryland Metrics ( $3.94 per 100)
(aka Japanese Standard Size P3) http://mdmetric.com/

on/off & mode dial control:

one oring, order number OR-4.8X1.9 from Maryland Metrics ( $3.94 per 100)
(aka Japanese Standard Size P5)

one oring, Precision Associates custom o-ring 0.053 x 0.074 (unknown cost)
http://www.precisionassoc.com/customf.htm (1-800-394-6590) I've never been able to find any of these! Let me know if you do.

note: Japanese JIS 2401 "P" series is the Standard for sizes P3 & P5, you'll find the standard here: http://mdmetric.com/or/jispgb.htm

 

[roswin]

There was a thread by Giligan about the way to take out and clean the small O-rings of the PT housing. I tried it once and honestly it's not so easy. Personally I put a drop of food grade silicon on each control button. I think is good and simple.

 

[Zorrr2]

That would be me:

All o-rings BUNA 70 (aka nitrile)

buttons:

seventeen orings, order number OR-2.8X1.9 from Maryland Metrics ( $3.94 per 100)
(aka Japanese Standard Size P3) http://mdmetric.com/

on/off & mode dial control:

one oring, order number OR-4.8X1.9 from Maryland Metrics ( $3.94 per 100)
(aka Japanese Standard Size P5)

one oring, Precision Associates custom o-ring 0.053 x 0.074 (unknown cost)
http://www.precisionassoc.com/customf.htm (1-800-394-6590) I've never been able to find any of these! Let me know if you do.

note: Japanese JIS 2401 "P" series is the Standard for sizes P3 & P5, you'll find the standard here: http://mdmetric.com/or/jispgb.htm

Called PRESISION ASSOCIATES this morning about the 0.053 x 0.074 ORING listed above and they said they have them. Was going to order some until she offered to send me some SAMPLES . . LOL . . (20-30) so that saved me $35 . . ) She did say the above specs lacked one number . . . what she is sending me is 0.053 Thick x 0.074 ID x .180 OD . . . I did not have the OD (outside dimension) so I am hoping this is right. Now this might be the one you sent me . . if that is the case I will just have EXTRAS . . LOL . . thanks again for your help !!

 

[jlyle]

Called PRESISION ASSOCIATES this morning about the 0.053 x 0.074 ORING listed above and they said they have them. Was going to order some until she offered to send me some SAMPLES . . LOL . . (20-30) so that saved me $35 . . ) She did say the above specs lacked one number . . . what she is sending me is 0.053 Thick x 0.074 ID x .180 OD . . . I did not have the OD (outside dimension) so I am hoping this is right. Now this might be the one you sent me . . if that is the case I will just have EXTRAS . . LOL . . thanks again for your help !!

That's great. BTW OD = 2 x thickness + ID

OD = 2 x 0.053 + 0.074 = 0.180