Hamilton Jet HJ212 Installation And Service Manual page 6

7 - Fault Finding _______________________________________________________ 7-1
System Faults ____________________________________________________________ 7-1
Jet Unit Faults ____________________________________________________________ 7-1
Engine RPM increases suddenly ________________________________________ 7-1
Engine RPM decreases _______________________________________________ 7-1
Water leaking from under the bearing housing ___________________________ 7-2
Loud high pitched rattling whine _______________________________________ 7-2
Excessive vibrations, gradually increasing ________________________________ 7-2
Engine RPM increases gradually over a period of time ______________________ 7-2
Sudden increase in vibration from the jet unit ____________________________ 7-2
Gradual increase in vibration from the jet unit ____________________________ 7-2
Low engine RPM ____________________________________________________ 7-3
Thrust bearing excessively hot _________________________________________ 7-3
Dry run faults ____________________________________________________________ 7-3
Bearing seizes when dry running _______________________________________ 7-3
Changing sound from the jet unit ______________________________________ 7-3
Excessive scouring of the shaft sleeve ___________________________________ 7-3
Reverse System Faults _____________________________________________________ 7-4
Steering System Faults _____________________________________________________ 7-5
Steering nozzle slow to respond _______________________________________ 7-5
Steering jamming ___________________________________________________ 7-5
8 - Maintenance _______________________________________________________ 8-1
General _________________________________________________________________ 8-1
Salt Water Operation ________________________________________________ 8-2
Jet surface coating procedure _______________________________________________ 8-2
Introduction and scope_______________________________________________ 8-2
Application of Antifoul Coatings ________________________________________ 8-2
Maintenance of Waterjet Coatings _____________________________________ 8-3
Preservation (Pre Installation) _______________________________________________ 8-7
Preservation (Post Installation) ______________________________________________ 8-8
Servicing Intervals ________________________________________________________ 8-8
HJ Jet Unit Service Intervals ___________________________________________ 8-9
Daily "pre use" servicing checks _______________________________________ 8-10