What if I wanted to work on my regs?

[Zung]

Ouch!

 

[herman]

Ouch!

It had to happen, some SP dealer has figured out that the black market pays well if you have the product. Now if others will get in the game we can get the prices down to something more reasonable.

 

[halocline]

That guy sells SP parts for a very high price. OTOH, a MK25 rebuilt well should last a few seasons, and you could even take it apart, clean, and put it back together with new dynamic o-rings if necessary. The seats last a long time due to the piston design, there are bushings protecting the HP o-ring from extrusion, and there are two LP piston o-rings; one works as a scraper to keep anything in the ambient chamber away from the inner, sealing o-ring. So it's designed to last a long time between rebuilds.

The big savings comes from extending the service interval to something more reasonable, based on the amount of use and any indications of trouble, rather than annual rebuilds.

 

[DMDavid]

Thank you everyone for the links to a few websites to help me with servicing my SP G250/MK25.

There seems to be a steady supply of parts on Ebay but rarely any tools to do it with, so now I should have both.

 

[Zung]

For tools, go to Scubatools.com, they sell direct.

Assuming you've already got general purpose hand tools, you don't need a lot:

• Yoke nut
• Bushing tools
• O-ring picks
• Multitool, or a pin spanner and a face spanner

Add a couple of torque wrenches (50 in.-lbs and 22 ft.-lbs) and you're in business.

 

[Scared Silly]

Zung, gave you a good list. double check on which yoke nut socket you need. There a 1" (25.4mm) and a 26mm. Not sure the tolerance is within .5 mm but for SP regs you probably want the 26mm socket.

 

[redacted]

Zung, gave you a good list. double check on which yoke nut socket you need. There a 1" (25.4mm) and a 26mm. Not sure the tolerance is within .5 mm but for SP regs you probably want the 26mm socket.

Scubapro takes the 1" socket.

 

[LeadTurn_SD]

Scubapro takes the 1" socket.

So does Mares.... you'd think both of these brands would take a metric socket

Best wishes.

 

[Scared Silly]

Yeah, I use my 1" on Mares and Atomics. Did not know SP was the same. Regardless, though one should check.

 

[Zung]

OTOH, I've got a SP MK10 bought in the US that has the 26mm yoke nut! Go figure