I got mine from the Grainger (or was it McMaster) catalog online. 
You can also look at the discount tool sales places such as C and H 
sales.  If you don't want to spend the money, and don't mind 
something big, there is an easy way to make one.  Take a piece of 
2x4, and using a hole saw cut a hole in it that's larger than the DS4 
diameter.  Then put a long screw through one side.  After the screw 
is in, and you have worked it back and forth a few times you might 
want to smooth the tip of the screw so as not to mar the DS4.  I 
didn't, and it didn't do any damage.  Set the DS4 in the hole, and 
tighten the screw until it's in the little hole.  Don't tighten too 
much, it doesn't need to touch the bottom of the hole.

I highly recommend getting a pin spanner though, it's a good thing to 
have in your toolbox.  I also suggest getting an IP pressure gauge. 
A good source for that, and they may also have pin spanners, is 
www.scubatools.com.

BTW, when you service your DS4 be sure to put the final ring (dry 
seal) on less tight than the ring before.  Otherwise, next time you 
disassemble both rings will come off as one, and there really is no 
easy way to separate them, other than using two pin spanners.

Cheers.

KAMARUDIN, Stephen wrote:
~
>Greetings List
>I am about to re-tune a couple of Apeks DS4's - the factory set IP 
>is too high at just under 11 bar.
>To get to the spring adjuster on the low pressure side I have to 
>remove an environmental sealed cover/diaphragm and need to use a pin 
>spanner. Some people call these hook spanners or hook wrenches. 
>There is a picture of one of these spanners at an excellent DIR site
>
><http://www.deeperstuff.com/apeks-1st.htm>http://www.deeperstuff.com/apeks-1
st.htm
>I was wondering if anyone know where I can get a couple of these pin 
>spanner/wrenches? Is there a name/brand for this tool? Where should 
>I look?
>
>The only spanner I can find like it is an "adjustable" pin spanner 
>by "Snap-on" and they (the retailer) wanted about US$65 for it. This 
>seemed a bit steep. I suppose I could make one but wanted to seek 
>advice first.
>
>thanks in advance
>
>Stephen Kamarudin
>Perth, Western Australia


--
Paul B.
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