I appreciate your experienced input. I will begin spraying the penetrating oil up into the joint between the motor housing and the tube as you suggested. This will give me over two weeks of soaking before the boat is hauled. I will go ahead and order a set of bearings in addition to the items listed. I will also order the Amel tool if you think it would be helpful.
I just wanted to add that I am now really glad that I bought an Amel with the bow thruster, it is such a help with stern in Med moorings.
SV Sueno #220
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-------- Original message --------
Date: 9/23/16 14:23 (GMT+01:00)
Subject: Re: [Amel Yacht Owners] Maramu bow thruster rebuild parts
Check with Amel for:
Prop hub and screws
Prop shaft seal
Foam donuts (3)
That should do it for normal service...however, you may want to open it and replace the bearings.
When corrosion occurs that seizes the tube, it is almost always oxidation (rust) of the cast iron motor connection at the tube. The corrosion expands the cast iron and "clamps" the tube in place. Spraying in those holes will get some penetrating fluid where you need it and spraying upward at the joint. Use an entire stay can over 2-3 days.
Amel designed a tool which will separate the tube. It clamps onto the tube, then treaded bolts push the tube out of the corrosion-packed connection. It is pictured in the Files section. The number one tool you need is patience.
BeBe Amel 53 #387
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