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Harness adjustments

 

 

After putting the back plate and harness together, adjustments will have to be made to suit your unique 
body shape and diving requirements. Here are some helpful guidelines for you to follow: 

 

It is a good idea to put on the exposure suit intended to be used with the BCD so the best 
adjustment can be achieved. 

 

Adjusting the height of the back plate: After putting the harness on, you should be able to touch the 
top of the back plate with your finger tips. 

 

The shoulder straps should fit as snugly as possible but not overly tight so that donning or doffing 
becomes difficult. Adjust strap length so there is just enough room for 2 fingers to pass through 
between the chest and the strap. 

 

The waist straps secure the lower portion of the harness to your torso. It should be tight but not 
uncomfortable. Excess webbing should be trimmed off and the loose threads burnt off with a lighter. 
You can leave the webbing slightly longer than needed as adjustments may be necessary due to a 
change in the thickness of the exposure suit used / body shape. 

 

Chest D-rings: For the basic harness, the bent D-rings should be located approximately mid way 
between the collar bone and the most pronounced part of the chest. For the deluxe harness, adjust 
the height of the top pair so they are approximately mid way between the collar bone and the most 
pronounced part of the chest. 

 

Waist D-rings: They should be placed at the widest points of the waist. 

 

Crotch strap length: It should be long enough to stop the back plate from moving upward but not too 
short that it becomes uncomfortable. Trim off the excess and burn off any loose fibre with a lighter to 
prevent fraying.   

 

Please pay extra precaution when using fire.

 

 

Crotch strap back D-ring: It should be on or just above the tailbone. 

 
 
 

Weight pocket installation 

 

 

1) With the harness 

unassembled at the 

waist, thread the 

webbing through the 

top (horizontal) slot on 

the back of the weight 

pocket.

 

 
 
 

21

 

 

2) Thread the webbing 

through the back plate 

as shown here (back 

view) 

 

 

3) Thread the webbing 

through both vertical 

loops on the back of the 

weight pocket. 

 

 

4) Attach waist D-rings to the waist strap 

with webbing keepers. Due to the 

addition of the weight pockets, the 

position of the D-rings may not be at the 

widest points of the waist. 

 
 

Attaching wing and tank adaptor to single tank BCD 

 
1) 

To attach the single tank adaptor to your back plate, firstly, put the square based screws through the 
holes in the single tank adaptor then through the grommets of your air cell from the back. 

       

 

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Содержание Dolphin Tech JT-30D

Страница 1: ...k adaptor and tank cam bands 7 Stainless steel twin tank bands 7 Weight pocket 8 Back plate pouch and fitting hardware 8 BCD handle 9 IV ASSEMBLING THE HARNESS BCD 9 Basic harness back plate system 9...

Страница 2: ...ry or death Do not inhale gas from within this BCD Maximum recommended cylinder capacity with max 8 203mm diameter is 1 a single 15 litre tank for JT 30D JT 30H JT 31D JT 31H 2 twin 15 litre tanks for...

Страница 3: ...e set up of the scuba tank height in relation to you and the BCD 3 HARNESSES Item no HB 1 basic harness HB 2 deluxe harness Depending on the model you have purchased it may either come with the basic...

Страница 4: ...econd back up bladder Each bladder also has 2 over pressure exhaust valves for convenience in buoyancy control The position of the valves and inflators can also be interchanged for a personalised set...

Страница 5: ...nominal diameter 7 WEIGHT POCKETS Item no JT WP7 Dolphin Tech weight pockets are made from 1680 denier ballistic nylon for durability There are 3 webbing loops on the reverse side and arranged in a w...

Страница 6: ...c harness your kit should contain the following parts Back plate BP 3 stainless steel or BP 4 aluminium plate depending on the model purchased HB 1 basic harness set 3 2m 126 long 2 wide nylon webbing...

Страница 7: ...of the webbing through an opening of a WK 4 webbing keeper then a DR 1 bent D ring and finally back through the WK 4 webbing slide s other opening Pic 7 Repeat the same procedure with the other end of...

Страница 8: ...sembly Pic 17 front Pic 18 back For adjustment of the harness please see the pg 21 for more information Deluxe harness back plate system If you have purchased a BCD with the deluxe harness your kit sh...

Страница 9: ...e grommet against the plate s ridge Pic 3 back Pic 4 front 3 Thread each end of the strap through both WK 4 webbing keepers slots so 4 in all sewn on a shoulder padding as shown in Pic 5 on the approp...

Страница 10: ...lower corners of the plate Pic 8 Take one end of the webbing and thread it through the inside slot on the same side of the plate from the front Pic 9 Pic 8 Pic 9 17 5 Thread the webbing through an ope...

Страница 11: ...through the buckle s slots as the picture shown below Pic 17 18 Pic 17 Pic 18 19 11 To assemble the crotch strap thread its open end through the loose WK 4 keeper and DR 2 flat D ring Make sure the D...

Страница 12: ...en the collar bone and the most pronounced part of the chest For the deluxe harness adjust the height of the top pair so they are approximately mid way between the collar bone and the most pronounced...

Страница 13: ...ngle tank adaptor and finally through the vacant opening in the rubber pad 23 Thread each band s webbing through its cam buckle in the following steps Pic 7 Pic 8 Pic 9 Pic 10 Attaching your single ta...

Страница 14: ...r valve installation IST strongly recommend leaving the valves manifold and twin tank band installation to your trained local dive professionals If you intend to carry out the installation of the twin...

Страница 15: ...ee if you can rock the twin cylinders by pressing the end of the cylinders or the valves down against the working surface You may need to loosen the aircraft nut a little to level them 9 Check if the...

Страница 16: ...wing nut hand tighten only Tank height Please keep in mind at the completion of the installation the tank valves should be high enough for you to reach after putting on the BCD and turn both tank val...

Страница 17: ...2 Orally inflate the BCD through the mouthpiece only press the button down when ready to blow air into the BCD Due to technical wing s inherent design sometimes gas may get trapped inside your the wi...

Страница 18: ...e diving As with the power inflator s deflation button it needs to be at the highest point of the air cell to be effective Donning the BCD Prior to putting on the BCD it should have been adjusted as d...

Страница 19: ...5 VI BUOYANCY DATA and MAXIMUM TANK SIZE BUOYANCY DATA and MAXIMUM TANK SIZE Model Buoyancy Max tank size JT 30D JT30H JT 31D JT 31H 120N 27lbf Single 15L JT 40D JT 40H JT 41D JT 41H 170N 38lbf Single...

Страница 20: ...ks performed Service person Date of service Location Tasks performed Service person Date of service Location 37 Tasks performed Service person Date of service Location Tasks performed Service person D...

Страница 21: ...med Service person Date of service Location Tasks performed Service person Date of service Location Tasks performed Service person Date of service Location Tasks performed Service person Date of servi...

Страница 22: ...41 www istsports com...

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