Daily "Pre Use" Servicing Checks; Jet Unit Servicing Details; Internal Water Path - Hamilton Jet HJ212 Installation And Service Manual

Maintenance

Daily "pre use" servicing checks

The following areas should be checked on a daily basis if the vessel is in regular use.
Intake screen, impeller, stator blades:
Ensure that the water level is below the level of the inspection cover or overflow preventer before

opening jet inspection hatches. Check via the main inspection cover that they are clear of debris.
Extreme care is required whenever inspection covers are removed, as water may enter the
vessel through these openings.
Inspection cover nuts should not be fully removed until the inspection cover has been
loosened, so that if the water level is higher than expected, the inspection cover can be re-
secured.
Never leave inspection covers removed without continuous monitoring of the water levels.
Steering hydraulic oil lines:
Check for oil leaks around hoses and fittings.

Check for freedom of movement of all cables.

Check the security of cable attachment points.

Reverse system:
Check the freedom of movement of the reverse cable.

Check for security of attachment of the cable and mounting points.

Check for leaks around reverse shaft bush [9] and seal [15].

Thrust bearing housing:
Check for signs of water leaking from under the thrust bearing housing. (leaking water seal). If the water

seal is leaking it should be replaced as soon as possible otherwise failure of the thrust bearing could
occur.

Jet Unit Servicing Details

Internal Water Path:

Check for obstructions inside the intake daily.
Remove the inspection cover and check around the impeller and intake screen for obstructions and

debris. Refer to section: Clearing blockages on page 10-46.
Extreme care is required whenever inspection covers are removed, as water may enter the
vessel through these openings.
Inspection cover nuts should not be fully removed until the inspection cover has been
loosened, so that if the water level is higher than expected, the inspection cover can be re-
secured.
Never leave inspection covers removed without continuous monitoring of the water levels.
Inspection Covers
Inspection Covers
8-10
Installation and Service Manual