Furuno FAR-3210 Installation Manual page 18

1. INSTALLATION
How to fasten double nuts
1
Note: Fasten the double nuts as Note: Fasten the double nuts as
6. Using a hex bolt (M6 25), nut (M6) and flat washer (M6), establish the ground sys-
tem on the mounting platform as shown in the figure on the next page. The loca-
tion 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
the supplied adhesive.
Arrange grounding point as close as possible to antenna unit.
Ground wire
Coat with
adhesive.
1-6
M12×70
(four places)
Seal washer
Flat washer
Nut1
(Torque: 57 N•m)
shown in the figure to the shown in the figure to the
right. Use spanners with a right. Use spanners with a
length of approx. 200 mm. length of approx. 200 mm.
Ground
terminal
Coat with adhesive.
Hex bolt
Flat washer
Flat washer
Flat washer
Spring washer
Hex nut
Antenna unit Antenna unit
Platform Platform
Adhesive
2
Nut2
(Torque: 49 N•m)
Nut2: Fix in place
Fasten ground
wire then coat
with adhesive.
Ground wire
Antenna chassis
Ground wire
OR
Seal washer
Insulation Sheet
Flat washer Flat washer
Two nuts
3
Nut1&2: Simultaneous work
as below.
Nut1: Fasten Nut1: Fasten
Hex nut
Spring washer
Flat
washer
Hex
bolt
Welding