t;-
Dismantlil1g Propeller.
1. Outch in neutral.
2. Undo boss screws using 8 mIn (5/16") Allen key.
3. Remove the boss and propeller blades. Check whether the drive block (4) is
cracked. If not, the stiffness can possibly be cured by careful filing of the drive
block faces.
If the drive block is cracked or loose on its threads, it must be replaced.
4. If the propeller blades are damaged, they must be repaired so that they are again
identical. Any blade differences will cause vibration leading quickly to wear on
the shaft.
Assembly.
1. Fit the blade tap blocks (5) to the blade taps (6).
2. The marked blade (7) is positioned with its tap block (5) engaged in the
recess on the marked side of the drive block. One half of the propeller boss (8) is
then fitted itl position from the port side in such a way that all the marks point in
the same direction.
3. The other blade is then fitted with its tap block (5) engaged in the remaining
recess in the drive block.
4. Fit the thrust rings, ensuring that the raised beaded side of each rings runs in
contact with the corresponding stern bearing surfaces. Fill stern propeller boss
with grease.
5. Fit the remaining half of the propeller boss and screw home the boss screws
which are locked with lork washers (1).
Torque setting, stainless steel bolts MlO. . . . . . . . . . . . . . . .5-5.5 kgm (38 ft.lbs.)
Torque setting, brass bolts (old type)V2"W. . . . . . . . . . . . . . 2-3 kgm (16ft.lbs.)
.
.-
~-
.. ('\
...
c',,"
44
To Next Page
Loading...
