Maintenance manual
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11.11
FB40 Feedback Inspection
To verify that the transmitter arrangement is correctly installed, please go through all checkpoints in
the listed below.
Note!
Before proceeding with the inspection, make sure to switch motor control cabinet to
“
LOCAL
CONTROL
” position
to avoid unintended operation of the Steering Gear while work is carried out.
Figure 1.
Item Component
Description
Reference Status Sign
1
Feedback Units
Make sure the locking nuts [15] is properly tightened.
Figure 2
2
Shaft [4]
Check that the center shaft is locked against rotation in the flat
bar on the rudderstock/hydraulic nut by tightening the lower
nut and securing it with a counter nut, each properly tightened.
Tightening torque; Lower nut, lightly oiled threads
–
160 Nm
Counter nut, lightly oiled threads
–
100 Nm
Figure 1
3
Chains [6A, 6B]
The chain shall travel horizontally; make sure the chains is not
climbing.
Figure 1
4
Chain tensioners
Check that the chain tensioners is positioned halfway between
the two chain wheels when the rudder is in center position.
Figure 1
5
Chain tensioners
Check that the chain tensioners is pre-tensioned according to
figure 8, 5mm is ideal, but 4-10mm can be accepted. Pre-
tension obtained by adjusting position of bracket.
Figure 3
