Vemco HR2, User Manual

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Step 4 - Insert the steel rod - Top end
Hold the body of the HR2 securely in place.
Insert the steel rod into the hole at the top end of the
receiver and hold on to the rod – it can slide right through
the hole and potentially damage something below.
Make sure the rod is inserted through to the other side –
damage may occur to the hole if the rod is only partially
inserted.
Step 5 - Unscrew the end cap
Apply pressure to the rod in the top end hole to turn it in a
counter-clockwise direction as you are facing the
hydrophone. The rod at the bottom of the receiver acts as a
brace while you apply pressure, but be careful of it
“jumping” off the flat surface.
Continue to rotate the rod, and therefore the end cap, until
turning becomes easier (but not quite free from the outer
cylinder).
Step 6 - Remove the end cap
Remove the top steel rod from the HR2 case and set it aside.
Continue by hand twisting the end cap in a counter-clockwise
direction until the end cap and outer cylinder separate.
IMPORTANT: Once they separate, do NOT twist the end
cap anymore, simply slide it out from the outer cylinder.
WARNING: DO NOT impact the threads on the end-cap or
they will dent and prevent the case from closing. For tips on
thread care, see
"The Threads Have Been Damaged", on
page 176 .
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HR2 Receiver User Guide