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5.2.2 On board maintenance procedure
5.2.2.1 General
As a result of inspection, any defective parts should be repaired in accordance with following procedures. Any shortage of quantity should be supplemented to correct number. Defective parts other than the followings should be recorded their details and ordered for maintenance and repair to the manufacturers.
5.2.2.2 Boat
(1) Rust on metal parts
Give anti-rusting treatment according to degree of damage.
(2) Damage of fabric
Repair fabric products by same material according to degree of damage.
(3) Gasket
Repair with adhesive sealant according to degree of damage.
(4) Drain valve
Remove any dirt and check correct operation.
(5) Water spray system
Remove any deposit from spray nuzzles. Tighten up pipe connecting parts when any leakage was noted. Adjust to proper tension on V-belt.
5.2.2.3 Engine
(1) Oil coating and greasing
When any rust exists, remove rust and coat with machine oil. Rotating parts should be filled with lubricating oil.
(2) Operating test
Operation test should be carried out on-board ship and afloat condition after launching at appropriate opportunity to check running condition. After operation test, ensure that valves of cooling water line are opened and flushed with fresh water and drained completely.
5.2.2.4 Electric parts
(1) Battery
Fill up battery with electrolyte if level is below the designated position. Tighten up electric terminal if it is loosed.
5.3 Inspection and maintenance of davit and winch
5.3.1 Inspection and maintenance plan
Weekly and monthly inspection and maintenance for davit and winch are to be carried out as follows.
Table 5.3.1.1
|
Inspection procedure and Maintenance Plan for Davit
|
| Items |
Method |
Inspection procedure |
Maintenance Plan |
| Weekly |
Monthly |
|
Frame
|
Visual
|
Check corrosion, deformation and depression |
X
|
X
|
|
Davit arms
|
Visual
|
Check corrosion, deformation and depression |
X
|
X
|
|
Operation
|
Moving out from stowed position |
X
|
|
|
Operation
|
Turning out from stowed position |
|
X
|
|
Sheave, suspension block
|
Visual
|
Check wear and corrosion |
|
X
|
|
Operation
|
Check moving condition |
X
|
X
|
|
Lubricate
|
Lubricate grease |
|
X
|
|
Hinge pin, sheave pin
|
Lubricate
|
Lubricate grease |
|
X
|
|
Davit arm stopper and trigger hook
|
Visual
|
Check wear and corrosion |
X
|
X
|
|
Operation
|
Check moving condition |
X
|
X
|
|
Lubricate
|
Lubricate grease |
|
X
|
|
Boat fall, Turn buckle
|
Visual
|
Check wear, breakage of wire and corrosion |
|
X
|
|
Lubricate
|
Lubricate grease |
|
X
|
|
Turn ends
|
Turn ends of boat fall (2.5 years) |
|
|
|
Replacing
|
Replacing boat fall (5 years) |
|
|
|
Lashing wire rope
|
Visual
|
Check wear, corrosion and looseness |
X
|
X
|
|
Deck operation device
|
Operation
|
Check moving condition |
|
X
|
|
Lubricate
|
Lubricate grease |
|
X
|
|
Remote control wire
|
Visual
|
Check wear and corrosion |
X
|
X
|
|
Operation
|
Check moving condition |
|
X
|
|
Lubricate
|
Lubricate grease |
|
X
|
|
Boat chock
|
Visual
|
Check wear and corrosion |
X
|
X
|
|
Table 5.3.1.2
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Inspection procedure and Maintenance Plan for Winch
|
| Items |
Method |
Inspection procedure |
Maintenance Plan |
| Weekly |
Monthly |
|
Gear box, gear,bearing, oil seal
|
Visual
|
Check level and deterioration of lubricating oil |
|
X
|
|
Operation
|
Check unusual noise |
|
X
|
|
Brake system, Governor brake
|
Visual
|
Check corrosion or any defects |
X
|
X
|
|
Wire end cotter
|
Visual
|
Check looseness |
|
X
|
|
Brake lever
|
Visual
|
Check corrosion or any defects |
X
|
X
|
|
Operation
|
Check operating condition |
X
|
X
|
|
Speed change lever
|
Lubricate
|
Lubricate grease |
X
|
X
|
|
Table 5.3.1.3
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Inspection procedure and Maintenance Plan for Electric Parts
|
| Items |
Method |
Inspection procedure |
Maintenance Plan |
| Weekly |
Monthly |
|
Electric motor
|
Visual
|
Check wiring |
X
|
X
|
|
Operation
|
Check normal operation |
|
X
|
|
Limit switch
|
Visual
|
Check wiring |
X
|
X
|
|
Operation
|
Check normal operation |
|
X
|
|
Lubricate
|
Lubricate grease |
|
X
|
|
Push-button switch box and cable
|
Visual
|
Check wiring and other defects |
X
|
X
|
|
Operation
|
Check normal operation |
|
X
|
|
Start panel
|
Visual
|
Check wiring and other defects |
X
|
X
|
|
Operation
|
Check normal operation |
|
X
|
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5.3.2 On board maintenance procedure
5.3.2.1 General
As a result of inspection, any defective parts should be repaired in accordance with following procedures. Any shortage of quantity should be supplemented to correct number. Defective parts other than the followings should be recorded their details and ordered for maintenance and repair to the manufacturers.
5.3.2.2 Wire rope
(1) Wire ropes should be changed in the following cases:
.1 break of elemental wire was observed;
.2 7 % reduction of nominal diameter was observed;
.3 kink or looseness of ply was observed; or
.4 erosion/corrosion was observed.
(2) Check fixing condition of wire ropes.
(3) Change the boat-falls within an appropriate period.
(4) Adjust the length of boat-falls as necessary so that the clearances between the davit arm and davit arm stopper at fore and aft are almost the same.
5.3.2.3 Boat-winch
(1) Prior to commencement of the maintenance work for the winch, the boat should be secured to prevent the movement.
(2) Oil should be checked and it should be changed when its colour changed into like white. In case that the amount of oil is not enough, oil should be added until the its surface comes to the designated level in the oil gauge.
(3) Surface of each gear inside the gear box should be checked. In case that a defect is found on a surface of gear, the gear box should be replaced or repaired.
(4) In case that the angle of break lever drop due to abrasion of break lining, the angle of break lever should be adjusted by loosening the bolts, adjusting the angle and tightening the bolts again.
5.3.2.4 Greasing
Lubrication is essential for the function of davit and winch and regular checking is necessary. Greasing also should be regularly conducted. For appropriate greasing, detailed structure of davit and winch and functions of their parts should be understood.
(1) All grease nipples of the davit should be oiled at least once a month.
(2) Gear oil inside the boat winch should regularly be checked regarding amount, change of colour and mixture of moisture.
(3) Wire rope oil should be regularly checked to prevent loss of oil. Wire rope should be oiled every two months in general.
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