Question Swapping out an SPG, any pitfalls I should be aware of?

[MacDuyver]

I cracked the face on my air gauge and am going to replace it with a new one. It looks pretty straight forward, unscrew the old one, don't touch/lose the little O-rings on the stem, put the new one on the hose.

Any pitfalls I ought to be aware of?

 

[scrane]

If the SPG comes pre-mounted on a HP hose there are no complications.

 

[johndiver999]

You want to remove the spool, clean it with a rag, put some grease on the orings and the threaded end of the spg where it mates with the hose, is what I do anyway

 

[Johnoly]

.. clean it...

What @johndiver999 said on the internal spool.... The best advice you'll read.

 

[stuartv]

Not EVERY SPG uses the same spool.

High Pressure Swivel Spindles aka 'Air Spools' | Dive Gear Express®

High Pressure Swivel Spindles aka 'Air Spools' All high pressure SCUBA hoses use an air spool, consisting of a spindle with two tiny o-rings, to mate the swivel connector on the hose to the ...

www.divegearexpress.com

 

[The Chairman]

Please: REPLACE THE SPOOL!!! At the very least, replace the two 003 O-Rings. Over-grease them a bit with a good quality grease when you do. Spools are cheap, but O-rings are even cheaper. They fail all the time, so out with the old, and in with the new.

 

[Kendall Raine]

I service the spools periodically-clean the spool and replace relube the o rings (and also carry spares on trips). They're also cheap if you want to just replace instead of service. You just need to replace with the same type (there are two kinds). Keeps them happy.

 

[The Chairman]

003 Viton O-Rings from McMaster-Carr are $7.69 for a pack of 100

McMaster-Carr

McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day.

www.mcmaster.com

 

[BoundForElsewhere]

McMaster-Carr is the Amazon for tinkerers.

 

[JoeTPhilly]

I would think a new spg would come with a new spool. I just replaced my spg and it came with a new one. Here are a couple videos which might be of interest.