Furuno 1824C Installation Manual page 26

1.4.2 Mounting procedure
Referring to the outline drawing at the back of this manual, drill five holes in the mounting
platform: four holes of 15 mm diameter for fixing the antenna unit and one hole of 25-30 mm
diameter for the signal cable.
Fastening the radiator to the radiator bracket
For your reference, the antenna installation materials list appears in the packing list for this
unit at the back of this manual.
1. Remove the radiator cap from the radiator bracket.
2. Coat contacting surface between the antenna radiator and the radiator bracket with
silicone sealant as shown in the figure below.
ANTENNA RADIATOR
(bottom view)
Coat grey area with
silicone sealant.
(MODEL 1934C)
3. Coat threaded holes on the antenna radiator with silicone sealant.
4. Grease the O-ring and set it to the radiator bracket.
5. Lay the antenna radiator on the radiator bracket.
6. Coat the radiator fixing bolts (4 pcs.) with silicone sealant. Fasten the antenna radiator to
the radiator bracket with the radiator fixing bolts, flat washers and spring washers.
Groove
Radiator
Coating the antenna with silicone sealant
Antenna
radiator
O-ring
Radiator bracket
Flat washer
Spring washer
Hex head bolt
(M8 x 30)
Fastening the radiator bracket to the antenna unit chassis
(MODEL 1944C/1954C/1964C)
Coat threaded
holes with silicone
sealant.
Coat bolts with
silicone sealant.
1-18
RADIATOR BRACKET
(top view)
10mm
Coat hatched area with
silicone sealant.