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1-8
10.Install the raise/lower drive block as follows:
a) Rotate the main shaft so the bow mark faces ship’s bow.
b) Install the raise/lower drive block onto the main body flange.
c) Fix the main shaft with the shaft retainer.
d) Loosen the fastening band, slide it up to the shaft retainer and fasten it.
e) Check that the distance from the top of the main shaft to the top of the
shaft retainer is as follows:
1.17 m main shaft: 75 mm
Main shaft cut at Lt + 110 mm: 15 mm
If not as shown above, loosen shaft retainer and fastening band to adjust the
distance. This will place the bottom of the soundome 10 mm above the bot-
tom of the retraction tank when the soundome is retracted.
Raise/lower
drive block
Shaft retainer
Bow
mark
Fastening band
Fastening band
Fasten for a gap of
approximately 1 mm.
1.17 m shaft: 75 mm
Shortened shaft: 15 mm
10 mm
Figure 1-12 Installing the raise/lower drive block
11.Tighten the grease cotton retainer for a gap of 7 to 9 mm.