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APPENDIX A - TWIN SRL FIXED D-RING HARNESS INTERFACE
Older ExoFit Full Body Harnesses with a Fixed D-Ring require a special Twin SRL Harness Interface to mount two
Nano-Lok SRLs on the back of the harness just below the Dorsal D-Ring. Specific Twin Leg Nano-Lok SRL models
are available for installation on ExoFit Fixed D-Ring harnesses (see Figure 20).
Figure 20 – Twin Leg Harness Mount Models for ExoFit Fixed D-Ring Harnesses
Swivel End
J - 3100107
1.0
HARNESS MOUNTING: To mount two Nano-Lok SRLs on an ExoFit Full Body Harness with the Twin SRL
Fixed D-Ring Harness Interface (Figure 21):
1. Loosen the Harness Webbing: Pull out on the Web Straps (A) where they pass through the bottom
of the Dorsal D-Ring (B) until there is sufficient space to insert the Twin Leg Interface between the Web
Straps and Back Pad.
2. Open the Harness Interface: With the Twin Leg Interface orientated as illustrated in Figure 21 - Step
2, push the Locking Sleeve (C) to the right and then turn clockwise to unlock the Gate (D). Swing the
Gate (D) down to open.
3. Thread the first Nano-Lok SRL onto the Harness Interface: Insert the Nose of the Connector (E)
through the Swivel Eye (F) on the SRL and then rotate the SRL around to the Gate End of the Connector
(G). The Gate can be closed to allow clearance for the Swivel Eye between the Gate and Spine of the
Connector.
4. Position the Harness Interface around the Web Straps: Insert the Nose of the Connector (E)
behind the Web Straps (A). Rotate the Connector behind the Web Straps until the Connector surrounds
the Web Straps.
5. Add the second Nano-Lok SRL on the Harness Interface: Slide the SRL's Swivel Eye (F) over the
Nose of the Connector (E) and position the SRL Swivel Eye in the Nose End of the Connector.
6. Close the Harness Interface: Allow the Gate (D) to swing closed and the Locking Sleeve (C) to rotate
back to locked position. Once the Harness Interface is closed, pull the Web Straps (A) back through
the Dorsal D-Ring to eliminate slack in the webbing and secure the Harness Interface between the Web
Straps and Back Pad.
Twin Leg Harness Mount Models
Lanyard End
Model
3101271
A
3101272
B
3101273
C
3101274
D
E
3101287
F
3101288
19
J - 3100107
Twin SRL Fixed
D-Ring Harness
Interface
Swivel End
Lanyard End
1
1
1
2
1
1
2
1
2
2
2
2
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