Scubapro 108HP

[rhwestfall]

IIRC, there is a lever with nylon tabs (half a ball) in the feet...

 

[Couv]

@Open Ocean Diver

I'm going to attach a "how to service a 108" document someone put together from posts made by @DA Aquamaster or @halocline or perhaps someone I owe an apology to for not remembering. I think you'll find it helpful. I'll also attach a note from an AIR 2 document that explains shimming the spring with a washer. The washer goes between the stem and the spring.

 

[scrane]

I have an early 108 and I like it a lot. It is simple and robust. I can't imagine a regulator with a more straightforward design using fewer components.

I see the Scubapro 108 and 080 are often listed together. Is there any difference between the 108 and the 080? Is it just a Scubapro nomenclature thing?

Also, my 108 has the fixed venturi, but it also has the large exhaust valve and oblong flange. Was this common? An interim design?

 

[Open Ocean Diver]

@Open Ocean Diver

I'm going to attach a "how to service a 108" document someone put together from posts made by @DA Aquamaster or @halocline or perhaps someone I owe an apology to for not remembering. I think you'll find it helpful. I'll also attach a note from an AIR 2 document that explains shimming the spring with a washer. The washer goes between the stem and the spring.

View attachment 599476

Thank you very much very helpful happy to have this in my document library. So I followed the procedure and I have it cracking now at .7

Looking at the diagram below where would I install the washer?

 

[Open Ocean Diver]

I have an early 108 and I like it a lot. It is simple and robust. I can't imagine a regulator with a more straightforward design using fewer components.

I see the Scubapro 108 and 080 are often listed together. Is there any difference between the 108 and the 080? Is it just a Scubapro nomenclature thing?

Also, my 108 has the fixed venturi, but it also has the large exhaust valve and oblong flange. Was this common? An interim design?

From my understanding there was108 and 108 HP (080) high-performance which included an adjustable orifice making it a 2 adjustment downstream valve. The HP... only has two O-rings.

Mine has the same exhaust valve as the 109 adjustable.

 

[scrane]

My understanding was the old fixed orifice 108's had a smaller exhaust valve with a circular flange.

 

[Open Ocean Diver]

My understanding was the old fixed orifice 108's had a smaller exhaust valve with a circular flange.[/QUOTE

do you have a picture of the smaller exhaust?

 

[scrane]

No, I'm afraid not. As you've probably discovered, information about the 108 is kind of sketchy and scattered.

 

[Open Ocean Diver]

No, I'm afraid not. As you've probably discovered, information about the 108 is kind of sketchy and scattered.

Which one do you have?

 

[scrane]

Which one do you have?

I have a fixed orifice (older) 108 with the larger (newer) exhaust diaphragm. I believe the older 108's normally came with smaller dual (?) exhaust diaphragms.