Scubapro help

[redacted]

I went into my local dive shop and he gave me four hp seats for 5$ a piece. I left the regs in vinegar and simple green overnight. They came out looking brand new, with the exception of a few spots where the chrome was eaten away by bad corrosion. Tonight I am going to disassemble the reg and clean the interior as well. Is there anywhere I can find the torque amount for the mk15?

You really need to do some reading before you take misunderstood bits of information about regulator service and use it to destroy perfectly good regulars. Vinegar is an acid. Acids eat metals. Soaking a regulator in a vinegar solution (50/50) is a common way to remove verdigris. In most cases, a 3 to 5 minute soak will do the job. In extreme cases, you might have to go 10 to 15 minutes but that is pretty extreme and you should be asking how bad is it leaving a little verdigris. Long (overnight) soaks just give that acid enough time to start working on the chrome plating and the metals it is supposed to be protecting.

Some chrome may be compromised by bad user maintenance. And some chrome is compromised by inept service.

Torque specs in [inch pounds]: http://www.scubaproregulatormuseum.org/MK_15.JPG

 

[Bubbletrubble]

I left the regs in vinegar and simple green overnight. They came out looking brand new, with the exception of a few spots where the chrome was eaten away by bad corrosion.

I hate to say it, but some people really shouldn't be working on regs.

 

[halocline]

I hate to say it, but some people really shouldn't be working on regs.

I thought about that too...but I think the simple green is an alkaline cleaner and so his mixture of vinegar and simple green just neutralized each other. Hence, inappropriately mixing the two cleaners probably saved the reg from losing its chrome in an overnight acid soak.

 

[Aukanaii26]

Success!! One down 3 to go it was the correct seat. I will ask him tomorrow if i can get more, some one said seats can be ordered from the trident catologue. I would try that first just because the employee isn't technically supposed to sell them to me. I will ask though. I dont know what I am doing wrong , but I think the vinegar-simple green solution worked way better than the ultrasonic cleaner.

 

[Aukanaii26]

I thought about that too...but I think the simple green is an alkaline cleaner and so his mixture of vinegar and simple green just neutralized each other. Hence, inappropriately mixing the two cleaners probably saved the reg from losing its chrome in an overnight acid soak.

Correct, the pH of vinegar is about 3 and simple green is a 9.5.

I got 4 mk15's 3 g250's and a d400 all with integrated computers for $200 total. So I i "destroyed a $25 dollar regulator I wouldn't feel bad as long as I learned. Halocline and bubble trouble, you can't tell me that in all your times working on regs you have never messed up? After this reg i will have serviced my bcd, air2, and s550. All of which i took to the shop after only to hear that i did a pretty good job ( the only thing necessary was fine tuneing the s550). I am not boasting I just took offense to bubbletroubles post.

I was wrong about the cleaner it works like a charm just needed a few cycles.

 

[knowone]

Never

ad nauseum

Must say, when I bagged that pile today, there was a washer, and an O ring missing

 

[halocline]

Halocline and bubble trouble, you can't tell me that in all your times working on regs you have never messed up?

Oh I'm sure Bubbletrouble's messed up...

I think you'll find that most of the regulars on this forum are very supportive of helping out fellow DIYers; I learned (and continue to learn) from a few regulars. But you have some expect some criticism when you post stuff that, in your case, probably sounds worse than it was.

Can you post a photo of the MK15 seat you have? As I said (twice so far I believe) it's a unique seat, different than the earlier MK5/10 and from the later MK20/25. I would highly doubt that this seat is available from Trident. Aftermarket versions of the other ones are. The MK5/10 seat is almost 50% taller than the MK15 seats I have, and it looks like it's almost 1mm wider. It shouldn't work at all. The MK20/25 seat is designed for a completely different type of piston edge.

A really good idea for you would be to buy the Vance Harlow book on regulator repair, and head over to scubatools to get a few tools. BTW, how did you get the MK15 clip out, and did you use any sort of tool for installing the bushings? There are specialized tools for both of those tasks.

 

[Couv]

Knowone, Nice haul. Those 3rd gen AIR 2s (and later) are the simplest of the AIR 2s to service. It looks like you got some nice gages and a few interesting tools too. But, it looks like the compass next to the awl must be Tango Uniform though.

Send that toothbrush to the new guy in Tampa.

 

[Aukanaii26]

I will post the pic when i get off work, but it look exactly the same as the previous one. lol this will sound bad, but the clip can be removed with a pair of needle nose surgical pliars. As I found out the snap ring's couldnt reach. The chrome insert bushing just came apart when I pryed it with my fingers? I dont know if I am talking about the right part though. If you tell me which item on the schematic I can tell you exactly how I did it.

 

[Aukanaii26]

Can you post a photo of the MK15 seat you have? As I said (twice so far I believe) it's a unique seat, different than the earlier MK5/10 and from the later MK20/25. I would highly doubt that this seat is available from Trident. Aftermarket versions of the other ones are. The MK5/10 seat is almost 50% taller than the MK15 seats I have, and it looks like it's almost 1mm wider. It shouldn't work at all. The MK20/25 seat is designed for a completely different type of piston edge.

Here is the seat I put in the mk15's I used it in 3 of them, the only reason i havent finished the fourth is because the spring was broke.

other than that the regs went together perfectly. I also serviced 2 G250s and the d400. one g250 needs an oring that i dont have.

Question about the d400, what is the benefit of the sliding key I see it make it easier to breath when down, but it make it harder to purge?