Tools for a SP Mk10?

[Scuba Pilot777]

Guys
As an introduction to reg maintenance, I've got a Mk10 on its way to me.
To remove the HP cap, what size pins does the pin spanner need?
Also what size of C spanner is appropriate for this reg body?
If it's in good nick, I might get some other tools in order to service it properly. Just need to strip it down first.
Cheers
Thanks.

 

[Mobulai]

0.24“ hook/C spanner
2.3mm pin for HP seat carrier

Great 1st stage, and great one to start practicing on

You might wanna get some micromesh amd a cheap usb microscope to learn restoring the piston knife edge

A piston bullet is also quite nice, and for all the SP pistons (not the mk2 obviously)

The toughest part is the captured Hp piston oring — esp if you don’t have a double hook pick

 

[davehicks]

The most useful tools I have found to be a Body Holder and a Vice. Then the usual assortment of high quality allen keys (metric and sae), brass pick, brass wire brushes, and crescent wrenches. You can do the job without a bench mounted vice, but you'll have a much easier time with one.

Get a Body Holder, C-Spanner, and IP Guage from DiveGearExpress or similar regional shop.

 

[lexvil]

SP makes a multi tool that has everything you need for these older 1st stages.

 

[Mobulai]

If you develop a taste for it; here’s your next „step“ prep

Thread 'MK10 Rebuilding Mods and Best Practices'

Mar 16, 2024

I have several MK10s to service.

I have come across a few comments here and there such as:

• Remove the polished surface from the piston stem o-ring.
• Micro-mesh the piston hard seat.

These comments were made as modifications to try. I don't know what they mean or what improvement these examples might make.

Does anyone have any servicing best practices and must do improvement mods?

• Timmyjane
• diy mk10 mk5 regulator service scubapo
• Replies: 62
• Forum: Regulators

• 

 

[Scuba Pilot777]

I believe the curve diameter of the c spanner should match the reg body. What size? I've seen a bunch of different sizes.

 

[Mobulai]

I think it has the label #3
The diameter of the cap is ~32mm

I use the small side of this tool; the big one is for mk20/25 sized regs
Here is how the fit looks

I also padded it with some adhesive fabric to keep it from marring the chrome

 

[rx7diver]

Guys
As an introduction to reg maintenance, I've got a Mk10 on its way to me.
To remove the HP cap, what size pins does the pin spanner need?
Also what size of C spanner is appropriate for this reg body? ...

SP makes a multi tool that has everything you need for these older 1st stages.

+1

I use only two specialized tools when working on my Mk 10's. One is a "Scubapro Tool" (see Scuba Tools - Scubapro®, for example; I've had mine, a brass "Peter Built" SP Tool, since the late 1980's). And the other is a thin piece of brass rod whose end I shaped to form into a pick or hook used to pry out that little HP O-ring that the piston shaft passes through.

Have fun!
rx7diver

 

[halocline]

Another very useful tool is the HP o-ring insertion tool that Herman on this forum made. I don’t know where you can buy them now, but I’d say it pays for itself in one rebuild in terms of aggravation saved.

 

[lexvil]

Let’s not forget the bullet