Furuno CH-500 Installation Manual page 27

4. After fully screwing the main shaft into the soundome neck, unscrew it by four
turns and apply the supplied sealant (LOCTITE NO.575) to the threads.
Pipe wrench
5. Fasten the soundome shaft completely.
6. Remove any excess sealant with a waste cloth. The sealant does not harden
when exposed to air.
7. Attach the supplied tank guide to the
soundome shaft temporarily, then con-
firm the narrowest gap between the
tank guide and retraction tank is within
0.5 mm.
Note: If the gap is more than 0.5 mm,
attach the supplied shim(s) to make the
gap within 0.5 mm.
1) Unfasten four hex. bolts (M10 50)
from the tank guide.
2) Unfasten two countersunk screws (M4 16).
3) Attach the supplied shim(s) to make the gap within 0.5 mm.
Flat washer
Hex. nut
Wrench
Grasp the soundome neck with
a wrench, and tighten the shaft
with a pipe wrench.
0.5 mm
Soundome
shaft
Hex. bolt
(M10×50)
Spring washer
Flat washer
Countersunk screw
(M4×16)
Guide plate
*: Pre-attached a shim whose
1. MOUNTING
Apply the sealant
(LOCTITE NO.575).
Soundome shaft
Transducer cable
0.5 mm
Torque:
28 N•m
Shim*:
Add the supplied
shim(s) to adjust
the gap.
thickness is 1 mm in default.
Retraction
tank
Tank guide
1-17