Furuno 1824C Installation Manual page 13

1.2.2 Mounting procedure
1. Remove the mounting hardware from the bottom of the antenna unit: four each of hex
bolts (M10X20), spring washers and flat washers. Save the mounting hardware to use it
to fix the antenna unit to the mounting platform later on.
2. Construct a platform (wood, steel*, or aluminum) of 5-10 mm (recommended dimension)
in thickness referring to the outline drawing at back of this manual. Fasten the platform
to the mounting location. Next, position the mounting base on the platform so the cable
entrance faces the stern direction.
*: For steel platform take appropriate measures to prevent corrosion.
Note: When drilling holes in the platform, be sure they are parallel with the fore and aft
line.
3. Using the hex bolts, flat washers and spring washers removed at step 1, fasten the
mounting base to the platform. The torque should be between 19.6-24.5 N•m.
Note: Longer hex bolts (M10X25) are supplied with the installation materials. Use them
instead of the hex bolts removed earlier if the mounting platform thickness is
5–10 mm.
Efeective
thread
length:
12 mm
Flat
washer
Spring
washer
Stern
Antenna unit, showing location of mounting hardware
Transceiver
module
Antenna base
assy.
Hex bolt
(M10 x 25
or M10 x 20)
How to fasten the mounting base to platform
Bow
Screws
two screws on other side
Flat washer
Spring washer
Hex bolt (M10 x 20)
5 mm or under : M10x20
5-10mm:
over 10 mm:
Platform
Apply silicone sealant.
1-5
M10x25
locally supplied bolts