Filter replacement instructions for Icom 746
by W2ENY
Remove bottom cover from 746. 

View on the right is bottom view 
(radio front on the right)

Notice the RED square near the top-middle.
This is where the 15 kHz and 9 kHz filters are located.
Here is the above picture, 
again the radio front is to the right.
This is zoomed to show detail near the filters.

You'll see the two light colored square objects.

Notice there are no delicate components nearby ;)

The upper one marked "G" is the 9 kHz.
The lower one marked "E" is the 15 kHz.
Removal of the Existing Filter
First, choose the one you want to remove!!!  I recommend removing the 15 kHz one.
Carefully, bend the clip away from the top of the filter.
Pull the top up from the board slightly.
While lifting the LEFT side of the filter slightly...
Apply your soldering iron to the left terminal, 
Not for too long. 
The left terminal should spring up away from the board.
Now, while lifting the RIGHT side of the filter slightly...
Apply your soldering iron to the right terminal.
Not for too long. 
The right terminal should spring up away from the board.
You now have most of the job done. 

Apply your soldering iron to the center terminal.  This is the ground terminal, more forgiving but not forever.

The filter should lift easily off the board.

 After removal of the 15 kHz filter.
Also remove the clip before installing new filter.
Now re-install the new filter. Select the new filter by holding the "FILTER"
button on the 746 front panel.  Remember
that the radio internal software is dumb.  The
radio doesn't know that you swapped out 
the 9 or 15 kHz filter.

Enjoy your new filter.

73 and Best Regards,
Bob