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Post by Emilio Largo on Mar 28, 2005 17:37:19 GMT -8
Can anybody explain or post a photograph showing how the straps are threaded through a military double tank harness. This is the type with bands only, no back piece.
Thanks for your help, and hopefully I'll wear these in Florida this weekend.
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Post by Captain on Mar 28, 2005 17:59:41 GMT -8
If you can wait until we get to Orange City you can take a look at mine.
Tom
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Post by Bryan on Mar 28, 2005 18:56:54 GMT -8
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Post by SeaRat on Mar 28, 2005 20:56:46 GMT -8
You can also look at the download I provided for the DA Aquamaster in the U.S. Navy Diving Manual, March 1970 (available on this website). Figures D-8 and D-10 show how the harness is threaded.
For the shoulder harness, orient it so that the chest straps of each side are pointed toward themselves, and the larger webbing is under the smaller webbing. The end that goes into the band threads from the top, behing the band, out through the 45 degree turn on the inside, and back under the band pointing to the outside of the band (away from the holding bolt).
The waist to chest strap starts the lacing from the outside, with the double D-ring on the left (because you cannot lace the double D-ring through the bands). Go to the inside vertical slot, and lace the band from outside to inside, back up outside, then back under the band at the 45 degree angle slot. This points the band up toward the shoulder harness, with the flat piece going up through the double D-rings of the shoulder strap. Do this on both sides.
The crotch strap simply attaches to the bottom bolt on the bottom band.
The two bands can then be tightened down. The top band should be just below the taper of the tank's top area, and the bottom band about a foot (12-14 inches) below the top band. Too far down, and there is no room for the J-valve's pull rod to attach to the band's two spring-loaded clips.
This really is not hard, but needs to be done correctly or the straps will excessively wear and the unit will not be balanced.
John
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Post by John C Ratliff on Mar 28, 2005 21:03:19 GMT -8
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Post by John C Ratliff on Mar 28, 2005 21:09:36 GMT -8
Figure D-17 shows it best (at the end of the manual). But it is incorrect in that the straps must be pulled up and out from the bands (the diagram shows them down and under, which is not correct). The diagram is good for the threading, but not for the final position--use the actual photos for that part.
Good luck,
SeaRat
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Post by John C Ratliff on Mar 29, 2005 14:16:07 GMT -8
I found one other mistake in the U.S. Navy Diving Manual's "D-17--Harness assembly--exploded view" drawing. They show the waist straps as both having the double D-rings on them. In reality, you will find this only on one of the waist straps, as the other has to thread through the double D-rings on both sides. That strap, which is the right strap on my units, has the metal hard cap on both ends.
SeaRat
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Post by John C Ratliff on Mar 29, 2005 19:57:21 GMT -8
I just got home from work, and went out to check my own harnesses. I found that I had not routed my twin fifties waist strap correctly either, but it worked for quite some time. What happens is that there is more wear on the harness if it is not routed through the slots correctly. So this exercise has helped me too.
I also measured the distance between (top of the bottom to bottom of the top) bands. Unlike what I said above, it is 8-9 inches (not 12-14 inches described above), with 9 inches being the max to be able to attach the reserve rod to the band hooks.
SeaRat
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