Furuno 1932 MARK-2 6Scanner unit Shown: XN12A, 8How to fasten scanner unit to, mounting platform

2.Lay the scanner unit on the mounting plat- form, orienting it as shown in Figure 1-6.

4.Pass flat washers, spring washers and nuts onto hex bolts. Fasten by tightening nuts. Do not fasten by tightening the hex bolts; seal washers may be damaged.

BOW

STERN

Figure 1-6 Scanner unit (Shown: XN12A)

CAUTION

Do not lift the scanner unit by the radiator; lift it by the housing.

The radiator may be damaged.

3.Insert four hex bolts and seal washers from the top of the scanner housing. In- sert the seal washers with the larger di- ameter next to the bolt heads. Be sure the seal washer, not other washers, is next to bolt head.

Seal washer
	Scanner
Rubber mat	unit
	Mounting
	platform
Flat washer	Silicone
	sealant

Figure 1-8 How to fasten scanner unit to

mounting platform

5.Coat flat washers, spring washers, nuts and exposed parts of bolts with anticor- rosive sealant.

6.Prepare ground point in mounting platform (within 300 mm of ground terminal on scanner unit) using M6 x 25 bolt, nut and flat washer.

7.Run the ground wire (RW-4747, 370 mm) between the ground terminal and ground point.

8.Coat ground terminal and ground point with silicone sealant as shown in Figure 1-9.

		Hex bolt
		Flat washer
Ground		Flat washer
terminal
		Spring washer
Silicone		Hex nut
	OR
sealant			GROUND
			POINT

Hex bolt

Seal washer

Flat washer Spring washer

Ground wire

GROUND

TERMINAL

Hex nut

Spring washer

Flat washer

Hex nut

Weld here.

Silicone sealant

Ground wire

Nut

Scanner unit

Figure 1-7 Fixing the scanner unit chassis	Figure 1-9 How to coat ground point and
	ground terminal with silicone sealant

1-3