Hull Unit - Furuno SEARCHLIGHT CH-250 Installation Manual

1.3.4 Assembling and mounting of hull unit
The hull unit is shipped as the parts shown in the hull unit kit on Equipment Lists (page iv and
after). Assemble the hull unit as shown in the procedure below.
Necessary tools
Name
Wrench
Wrench
Pipe Wrench
Ball Wrench
1. Calculate necessary length of main shaft from the length of retraction tank
spare portion. When 1 m or 1.8 m long tank is used, main shaft (1.17 m or 1.97 m) can be
used without cutting off any portion.
2. Remove hex bolt, nut, spring washers, flat washers and trunnion pins from the main body
flange. And then, mount the raise/lower drive unit on the shaft sleeve by using the hardware
removed.
Specification
For M10 (Hex. size 17 mm)
For M20 (Hex. size 20 mm)
55 mm
Hex size 4 mm
Supplied length: 2.2 m or 3.8 m
Lt + 200 mm for 400 mm stroke
Lt + 50 mm for 250 mm stroke
Take care
not to damage.
Recommended: double offset
wrench
For fixing gland
For fixing the dome
Chamfer the edge to
protect O-ring from
damage.
9
Remarks
and cut off the
Lt