Hamilton Jet HJ212, Installation And Service Manual, Page: 138 / 198

Appendix
Installation and Service Manual
Vessel Trial
Item Check Completed
1 Leave the mooring and check that the steering is operating correctly at
"Forward Speed", at "Zero Speed" and going "Astern".

2 Observe the jet stream when going "Dead Ahead" at speed to ensure
that it is relatively clean with an even shape.

3 Check the jet unit and driveshafts are running smoothly (no vibration)
over the entire engine operating speed range (i.e. from idle to full
ahead).

4 Periodically check the bearing housing temperature and record the
temperature once it reaches a steady value. Due to friction caused by
the seals, the bearing housing is likely to be warm. The temperature
should not exceed 80ºC.

5 If practical check the driveshaft coupling joint temperatures (if fitted).
Increased joint temperature may indicate driveshaft misalignment.

6 Periodically check the hydraulic oil temperature at the oil tank. Record
the temperature reading after a sustained run at cruising speed and
after a period of vessel manoeuvring.

7 Record maximum speed (using GPS) and engine revolutions (strong
currents will result in inaccurate speed readings since the GPS provides
speed over ground). At maximum speed the jet revolutions should be
verified with a hand held tachometer at the jet unit coupling.

8 Record vessel speed at varying engine revolutions if possible.

9 Record observations on vessel trim, loading, etc.

Notes
10-22