Reflex Marine FROG-6 HC6-01 620, User Manual

Page: 23 / 97

User Manual FROG-6
UM-0007-REV.06 Page 23
5.4.2 Sling Leg Arrangement and Observed Snagging Issue
The FROG-6 sling arrangement has a shorter PRIMARY leg attached to the main lift eye and a longer
SECONDARY leg attached to the back-up eye (as shown in drawing 620 sheet 1 and 220-30 in
Appendix B ).
This arrangement provides lifting redundancy. One issue that has been observed is that on rare
occasions the shackle attached to the back-up eye does not always rotate smoothly and can cause
an unexpected ‘jump’ on pick up. This is not a cause for concern and is alleviated in the following
way.
Always ensure the shackle insert (p/n 220-10-03) is always installed correctly onto the shackle pin
installed on the back up (longer leg) of the lifting assembly. This part assembly is shown in Detail D of
drawing 220-03 in
Appendix B . The shackle pin insert prevents the shackle from assuming a
contorted position which could result in a foreshortening of the beck up leg.
Always ensure the main shackle retaining bracket (p/n 220-10-05) is properly installed when making
up the main lift shackle to the lift eye plug. This part assembly is shown in Detail E of drawing 220-03
in
Appendix B . The purpose of this retaining bracket is to present the main shackle in an upward and
‘ready for lift’ orientation. It is possible that this bracket gets distorted in use and can cause
subsequent damage to the sling thimble. It is recommended to also keep a few spare brackets
available for easy replacement as required.
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