Furuno FAR-3320W Installation Manual page 26

1. INSTALLATION
Note: The bolts can also be inserted from the underside of the platform.
5. Coat exposed hardware with marine sealant.
6. Using a hex bolt (M625), nut (M6) spring washer (M6) and flat washer (M6), es-
tablish the ground system on the mounting platform as shown below. The location
must be within 340 mm of the ground terminal on the antenna unit. Connect the
ground wire (RW-4747, 340 mm, supplied) between the grounding point and
ground terminal on the antenna unit. Coat the hardware of the ground system with
marine sealant (supplied) as shown below.
Antenna chassis side
Mounting platform side
Ground wire
Mounting platform Mounting platform
Coat with
marine sealant.
Arrange ground terminal as close as possible to antenna unit.
1-12
M12x70
(eight places)
Coat with
marine sealant.
Ground wire
Coat with marine sealant.
Hex bolt
Flat washer
Flat washer
OR
Flat washer
Spring washer
Hex nut
Coat with
marine sealant.
Use two nuts.
(Torque: 49 N•m)
Fasten ground wire.
Coat with marine sealant.
Antenna chassis
Ground wire
Mounting platform Mounting platform
Welding
Seal washer
Flat washer
Spring washer
Hex nut
Spring washer
Flat
washer
Hex
bolt