Furuno CH-500 Installation Manual page 41

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21. Apply approx. 1 mm thickness of liquid gasket (TB1121 or TB1184) to the retrac-
tion tank flange. For the application area, see the following figure.
Note: Do not apply liquid gasket to the gasket. If applied, clean the gasket with a
waste cloth.
22. Apply a slight coat of lithium grease (supplied locally) to the supplied hex. bolts
(M16 75), spring washers, flat washers and hex. nuts.
For recommended lithium grease, see page 1-1.
23. Set the hull unit into the retraction tank, taking care not to damage the soundome,
then secure the hull unit to the retraction tank, using hex. bolts, nuts and washers.
Flange assembly
Bow mark
Gasket
Retraction tank
flange
Retraction tank flange
Liquid gasket application area:
Apply approx. 1 mm thickness of
liquid gasket. Be careful not to
apply to the bolt holes.
Hex. nut
Spring washer
Flat washer
Flat washer
Hex. bolt
(M16×75)
1. MOUNTING
Bow
Torque:
120 N•m
1-31

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