Technical Manual
60
It is very important not to attempt disassembly of this sub-system, as
the removal of certain fastenings without correct support can cause
irreversible and costly damage to the internal construction.
Maintenance
NOTE:
Appropriate safe working practices should be followed to ensure that
all hazards are minimised.
When the system is in operation, the motor and gearbox should be washed
down with clean, salt-free water whenever it is returned to the deck of the
ship. This will reduce corrosion, and enable thorough inspection of all the main
housing, connectors, and connecting cables.
It is good working practice to regularly check all fastenings to ensure they are
present, tight, and there is no damage to them or the items they are fitted to.
Any damaged fastenings should be replaced immediately.
The electrical cable connected to the motor should be visually inspected to
ensure there are no chafes or cut in the insulation. The connectors on both
ends of the cable should be tightly fitted with no face gap, and the lock-rings
should be finger-tight. Any damaged cables or lock-rings should be replaced
immediately.
It is necessary to regularly check the hydraulic hoses, hydraulic fittings, and
motor/gearbox housings for any significant damage such as serious impact
damage, cuts, abrasions, or leaks. Any damaged parts should be investigated
closer, replaced vulnerable parts such as hose and fittings immediately,
remembering to follow the correct depressurisation procedure first, as
discussed in section 5.3.1.
After the first complete survey operation, the oil in the system should be
changed as routine servicing.
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