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if the 4 bolts that hold the bow thruster are out it should be
Drive the bow thruster simply go down, then from the outside of
the boat rotate the bow thruster, possibly by a movement rotation
back and forth. Always sweet ...
Le 28/08/2019 à 20:33, Matt Salatino
via Groups.Io a écrit :
Would a heatgun provide enoughheat without affecting the FRP?
On Aug 28, 2019, at 10:21 AM, CW Bill Rouse <brouse@...
should be very, very careful with heat because the Bow
Thruster Tube and case is made of GRP, not metal.
contact point is Cast Iron to the GRP tube. The problem
is a result of NOT replacing the lip-seal and foam
donuts, and possibly leaving the bow thruster down while
sailing or motoring. Saltwater has passed through the
seals and has caused corrosion on the electric motor
base which is made of Cast Iron. This corrosion (Iron
Oxidation) has reduced the size of the opening for the
tube at the base of the motor. Your photos show that
this has been more than a little saltwater over a long
time, possibly months/years. It is going to be very
difficult to separate the tube from the motor base. You
will need the tool designed by Amel, plenty of
penetrating fluid and 3-4 days of constant pressure to
cause separation. You can use some light tapping or
vibration on the cast iron motor base intermittently
while constant pressure is applied with the special
tool. But take care not to strile the base too hard
because it is made of cast iron.
I recommend that you closely check the lower
bearing on the electric motor because I suspect it is
In the future, replace the seals every 2
years...also replace the 0.3 liters of 80/90 Gear Oil
when you replace the seals. Always use plenty of
waterproof grease at the contact points of the tube
and motor base.
This is the normal materials needed for service
every 2 years (contact SAV"at"Amel.fr
You will certainly get other advice, but I firmly
believe that you will not get better advice.
CW Bill Rouse
720 Winnie St
Galveston Island, TX 77550
On Wed, Aug 28, 2019 at
12:03 PM Matt Salatino via Groups.Io <firstname.lastname@example.org
A little heat?
I had the same problem ... You need a lot of
patience, mutch WD40 and patience, do not
forcing, do not break the threads, the contact
is bronze on stainless ...
I needed 2 days ...
Hold time 2 or 3 days with WD40, WD40 and much
28/08/2019 à 18:35, Bernd Spanner a écrit :
I wanted to change the seal on the bow thruster
Unforunately after removing the 4 screws I could
not get the shaft disconnected. It’s badly
rusted all over. Any ideas how I can loosen it??
Already used some wd40 & caramba to get it
loose.... no success
SN 119 / Cascais, Portugal