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Chapter 8 PERIODIC INSPECTION AND MAINTENANCE PROCEDURES
Seawater Strainer Mesh Filter - Clean and Replace
Pay attention to the orientation of strainer mesh filter
when installing.
Piping shall be free from deformation and stress.
Do not drop or lay any objects on the seawater
strainer. Do not use it as a foothold.
When installing O-rings, be careful so that O-ring
does not protrude from the groove.
Do not tighten the hexagon cap nut excessively. The
outer acrylic casing may be damaged. However, if
the tightening torque is too weak, the hexagon cap
nut may loosen, causing water leaks, which may
result in accidents.
Be sure to tighten to the proper tightening torque.
1. Stop the engine and close the Kingston valve.
2. Drain seawater that remains by loosening the drain
plug.
3. Loosen the hexagon cap nut and remove the top
cover and O-ring.
4. Remove the strainer and remove trash.
Replace O-ring, strainer, and anti-corrosive zinc as
required.
5. Install the strainer mesh filter against the seawater
flow.
6. Set the top cover so that the mesh filter is engaged
with two filter fixing ribs.
7. Install O-ring and top cover, and tighten the hexa-
gon cap nut. Tightening torque for the nut is 1100
N.m {112.17 kgf.m} [811.32 lbf.ft].
8. Open the Kingston valve.
9. Loosen the air vent plug to bleed air.
8-22
Air vent
-ring
Top cover
Center bolt
Mesh filter
Body
Fig. 8-28 Seawater Strainer Mesh Filter - Clean and
Replace
Mesh filter
Seawater flow direction
Fig. 8-29 Mounting Orientation of Strainer Mesh Filter
Mesh filter
Fig. 8-30 Arrangement to Top Cover
Hexagon cap nut
-ring
(Seal washer)
(Correns Corporation)
-ring
Anti-corrosive
zinc
Outer casing
-ring
-ring
Drain port
Mesh filter fixing rib
2 places (inner side)
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Troubleshooting
