Furuno CH-270 Installation Manual page 31

Assembling of Hull Unit CH-184-270 (250 mm stroke)
See Note 1 on page 22 BEFORE starting the installation.
1. Calculate the length of the main shaft according to tank length "Lt."
2. Set the raise/lower drive assy. on the main
body flange assy. and insert trunnion pin.
3. Slide lock nut and stopper washer onto the
main shaft.
4. Screw main shaft tightly into the neck of the
soundome. Unscrew the shaft by five turns
and coat threads with adhesive.
5. Fasten main shaft completely and tighten
lock nut with wrench.
Supplied length: 1.17 m (2.2 m)
Lt - 17 mm (250 stroke)
(Lt = Tank Length)
Be careful not
to damage.
Chamfer edge to
protect O-ring from
damage.
Trunnion Bolt
Spring
Washer
Main Shaft
Lock Nut
Stopper Washer
Coat with
adhesive.
Set Screw
19
Coat with Molytone grease.