Furuno NAVnet DRS2D - Manual (Page 13)

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4. Pas s 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.
8. Coat ground terminal and ground point with silicone sealant as shown below.
Antenna
unit
Mounting
platform
Silicone
sealant Flat washer
Rubber mat
Seal washer
Ground
wire
Hex. bolt
Flat washer
Spring washer
Flat washer
Hex. nut
Silicone
sealant
Hex. nut
Weld here.
Silicone
sealant
Ground
wire
antenna
unit
OR
Flat washer
Spring washer
Ground
wire
GROUND
TERMINAL
GROUND
POINT
Hex. nut