Furuno DRS4A Installation Manual page 8

3. Insert four hex bolts (M12 x 60, supplied) and seal washers (φ30, supplied) from the top of the
housing, as shown below.
4. Past 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 radar sen-
sor) using M6 x 25 bolt, nut and flat washer (supplied).
7. Run the ground wire (RW-4747, 340 mm, supplied) between the ground terminal and ground
point.
CAUTION
Do not lift the radar sensor by the
radiator; lift it by the housing.
The radiator may be damaged.
Seal washer
Rubber mat
Flat washer
4
Hex. bolt
Seal washer
Flat washer
Spring washer
Nut
Antenna
unit
Mounting
platform
Silicone
sealant