Furuno FR-8122 Installation Manual page 12

1. MOUNTING
3. Insert four hex bolts (M12x60, supplied) and seal washers (Ф30, supplied) from the top
of the antenna housing, as shown below.
4. Pass flat washers (M12, supplied), spring washers (M12, supplied) and nuts (M12,
supplied) onto hex bolts. Fasten by tightening nuts. Do not fasten by tightening the hex
bolts; seal washers may be damaged.
5. Coat flat washers, spring washers, nuts and exposed parts of bolts with anticorrosive
sealant.
6. Prepare ground point in mounting platform (within 300 mm of ground terminal on
antenna unit) using M6x25 bolt, nut and flat washer (supplied).
7. Run the ground wire (RW-4747, 340 mm, supplied) between the ground terminal and
ground point.
1-4
Fixing the antenna unit chassis
Seal washer
Rubber mat
Flat washer
How to fasten antenna unit to mounting platform
Hex bolt
Seal washer
Flat washer
Spring washer
Nut
Antenna
unit
Mounting
platform
Silicone
sealant