Furuno CH-37 Installation Manual page 11

Color sector scanning sonar
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Assembling and mounting of hull unit
The hull unit is shipped disassembled as the parts shown in the hull unit kit on pages
1-10 and 1-11. Assemble the hull unit as shown in the procedure below.
Necessary tools
Name
Wrench
Wrench
Pipe Wrench
Ball Wrench
1. Unscrew eight pieces of socket head cap screws with the ball wrench (supplied)
to detach the soundome.
NOTE
Do not unfasten two nuts
painted in red.
Unfastening the nuts may
allow water to leak inside,
which can damage the
soundome.
Kinoruster*: Anti-crevice
corrosion sealant
(supplied)
NOTE
Do not fasten the M5x10 screws.
Oil may leak into the soundome.
2. Fill the soundome with sonar oil 6 cm below the top of the dome. (Use only the
specified sonar oil. Use of other sonar oils may affect performance.) Reattach the
soundome.
Ball wrench
Specification
For M10 (Hex. size 17 mm)
For M20 (Hex. size 20 mm)
55 mm
Hex size 4 mm
Rotate 3 or 4 turns by
hand to make sure that
turning mechanisms are
functioning properly.
Apply Kinoruster*.
Screw
6 pcs. M5x10
Sonar oil
5 cm
Use packing
material to support
soundome.
Supplied with hull unit kit
Socket head cap screw
(8 pcs. M5x30)
Soundome
60
Sonar oil 4L
No
000-824-033
Super sonar oil 4L
Yes
000-177-561-10
1. MOUNTING
Remarks
Spring washer
O-ring
Remove
Protective sponge
Frequency (kHz)
81
113
162
Yes
Yes
Yes
No
No
No
1-3

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