ACR Electronics HydroFix 9490 - Manual (Page 11)

Y1-06-0209G 10
8.) Push the release spring back against the bracket aligning the holes
on the spring with the holes on the back of
the bracket.
9.) Take the assembled HRU and place the
washer end of the HRU through the larger
top hole and slide down into the smaller
slot.
10.) Turn the HRU to the left side of the bracket
(see Figure B).
11.) This will lock the HRU and spring into
place. Carefully release the HRU and make
sure it is securely in place.
12.) Reinstall the beacon with the lanyard facing
toward the back of the bracket.
13.) Place the bracket top cover on top of the bottom cover and
maneuver the HRU rod to come out the rod hole on the bracket.
14.) Make sure the bottom hinge and the top bracket are securely
connected.
15.) Place a cotter pin into the top of the HRU release rod locking the top
cover in place.
16.) Place HRU expiration label (K) on the outside of your bracket in a
visible location.
Figure B