Learning to do maintenance on my own gear, Apeks

[Nemrod]

You pound it with your foot.. now I finally understand imperial units

At least he is not using stones, WTH!

Absolute accuracy to the nth degree is not really needed with regulator maintenance pressure instruments. Being consistent and thorough in procedures is more important.

 

[Mobulai]

At least he is not using stones, WTH!

That’s just a stoneage thing — I said what I said

 

[gratefulmjc]

Orifice adjustment tool, which one?

On my Apeks XTX50s (and XTX200s), the orifice takes a slotted tool (not hex, as noted in an earlier post).

While I use a 2021 Service Manual that covers XTX200/100/50s (but not also the XTX40s noted in your post), a 2013 version of the manual I have covers XTX200/100/50/40/20s with all models having the same part number for the orifice...so I would expect you'll need a slotted tool for XTX40s as well (I expect @buddhasummer could confirm/correct).

Here is a pic of a spare orifice (PSA, it's on a rubber mat) and the Sherwood tool I use for installation/initial positioning of the orifice:

I got the tool from Scuba Tools ((Sherwood Part#20-900-100) Brut Poppet Orifice Installation Tool) when putting together a tool set for the @rsingler reg class (as mentioned in an earlier post, an excellent way to kick start your DIY reg servicing).

If you would like a copy of the tool list I put together for the class, feel free to DM me.

FWIW, I use an inline adjusting tool attached to an inline shutoff valve for setting the final position of the orifice. While I haven't used the Sherwood tool to set the final orifice position...as an iterative process it would mean repeatedly removing/reattaching the hose as well as turning the tank valve off/on, I can only imagine the additional time and effort that approach would require...IMO, the inline adjusting tool is worth it.

Enjoy the DIYing!

 

[happy-diver]

Yep on the way to the happy-design room I grabbed a stumpy screwdriver and went hastily to the shaping shop

Immediate delivery!

Bootifull!

 

[Centrals]

Allen key for the older model or screw driver for the subsequent models up to XTX series.
Analogue IP gauge is dirt cheap and should be in every diver diagnostic kit.

 

[buddhasummer]

On my Apeks XTX50s (and XTX200s), the orifice takes a slotted tool (not hex, as noted in an earlier post).

While I use a 2021 Service Manual that covers XTX200/100/50s (but not also the XTX40s noted in your post), a 2013 version of the manual I have covers XTX200/100/50/40/20s with all models having the same part number for the orifice...so I would expect you'll need a slotted tool for XTX40s as well (I expect @buddhasummer could confirm/correct).

Here is a pic of a spare orifice (PSA, it's on a rubber mat) and the Sherwood tool I use for installation/initial positioning of the orifice:
View attachment 865515

I got the tool from Scuba Tools ((Sherwood Part#20-900-100) Brut Poppet Orifice Installation Tool) when putting together a tool set for the @rsingler reg class (as mentioned in an earlier post, an excellent way to kick start your DIY reg servicing).

If you would like a copy of the tool list I put together for the class, feel free to DM me.

FWIW, I use an inline adjusting tool attached to an inline shutoff valve for setting the final position of the orifice. While I haven't used the Sherwood tool to set the final orifice position...as an iterative process it would mean repeatedly removing/reattaching the hose as well as turning the tank valve off/on, I can only imagine the additional time and effort that approach would require...IMO, the inline adjusting tool is worth it.

Enjoy the DIYing!

You are correct.