Furuno FSV-24 Installation Manual page 24

Procedure
1. Clean the hull unit flange, O-ring and O-ring groove. Coat them with a slight
amount grease.
2. (1200 mm stroke) Use 24 hex. bolts, 48 hex nuts, flat washers and spring
washers to fasten the attachment flange to retraction tank.
(1600 mm stroke) 24 bolts have already been fitted. Use the bolts, 48 hex.
nuts, flat washers and spring washers to fasten the attachment flange to
retraction tank.
3. Place the O-ring in position on the attachment flange.
To install the attachment flange and the hull unit, see "1.1.4 Installing hull unit on
retraction tank" on page 1-5.
The sectional view for the attachment flanges are shown on the next two pages.
Attachment flange for 1200 mm stroke transducer, sectional view
1-16
Hex. Bolt
Flat Washer
Hull Unit Flange
O-ring
Flat Washer
Spring Washer
Hex. Bolt
Hex.
Flat Washer (M20)
Nut
Attachment Flange
O-ring
Existing Tank
Flat Washer
Spring Washer
Hex. Nut