Furuno 1833C, 1933C, 1943C, 1823C, GD-1900C, 1953C manual 1-16, Fixing holes inside antenna unit

Fixing holes inside antenna unit

This method requires removal of the RF unit in the antenna unit to access inside fixing holes. Use hex head bolts, flat washers, spring washers and nuts (local supply) to mount the antenna unit, confirming length of bolts.

1.Loose four scanner bolts to open the antenna unit. Refer to figure in below for locations.

Antenna unit chassis, upper chassis separated

2.Unplug connector connected between upper and lower chassis.

3.Separate upper chassis from lower chassis by removing two hex head bolts (M8x25).

4.Remove the board cover by unfastening four pan head screws.

5.Remove connector from RF unit.

6.Remove RF unit by unfastening four hex head bolts.

7.Lay the corrosion-proof rubber mat (supplied) on the mounting platform.

8.Fasten the lower chassis to the mounting platform with hex head bolts, spring washers, flat washers and nuts (local supply), and then coat flat washers, nuts and exposed parts of bolts with silicone sealant. Cut a slit in rubber bushing and insert bolt into bushing. Do not use seal washers.

9.Reassemble RF unit, cover and chassis.

10.Set four knob caps (supplied) into outside fixing holes.

11.Do steps 6-8 in “Outside fixing holes”.

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