Maramu bow thruster rebuild parts

James Alton


  I need to service the bow thruster on my 46' 1987 Maramu.  Can anyone provide me a list of the normal parts to order with part numbers if possible?

   Also,  my thruster has not been serviced in a number of years and I suspect the motor shaft is stuck on the vertical drive shaft.  I removed the 4 bolts securing the composite tube and did some gentle tapping and tugging with no movement.  There is no corrosion evident between the composite tube and the motor housing since the previous owner keeper that we'll lubricated.  I was hoping that I could spray through the holes for the bolts securing the composite tube to the motor housing but I noted that on my thruster the holes only go part of the way through the composite tube.  Do the bolt holes go all of the way through the opposite tube on the SM?  If so,  is there any reason that I could not drill on through one holes so that I can spray the drive shaft?  One of the holes has stripped threads so I was thinking of drilling deeper to retap the threads but I don't know how thick the tube is etc.   Any guidance here would be appreciated.


James Alton,  SV Sueno #220.

Sardinia, Italy

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