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Figure 104
1. Blade bolt
2. Blade retainer
3. Spring lock washer
Removing the Wing Blade Assembly
The right and left blade assemblies rotate in opposite
directions and are unique to their positions. Ensure
that you install the fan discs and blades in the correct
positions.
1.
Hold the wing blade assembly using a cloth or a
thickly padded glove.
2.
Remove the blade bolt, spring lock washer,
blade retainer, and curved washer from the
spindle shaft
(Figure
3.
Remove the blade assembly
Important:
The right blade assembly blade
bolt has a left-handed thread. Turn the blade
bolt clockwise to loosen it.
Figure 105
1. Wing blade assembly
2. Spring lock washer
3. Blade bolt
4. Curved washer
5. Center blade
105).
(Figure
105).
4. Blade assembly retainer
5. Curved washer
6. Spindle shaft
Sharpening and Balancing the
Blades
Sharpening and Balancing the Center Blade
1.
Use a file or sharpening tool to sharpen the
cutting edge at both ends of the blade
106).
Note:
Maintain the original angle–22°.
Note:
The blade keeps its balance if you
remove the same amount of material from both
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cutting edges.
1. Sharpen at the original angle–22°.
2.
Check the balance of the blade by putting it on
a blade balancer
Note:
If the blade stays in a horizontal position,
the blade balances and it is ready for use.
Note:
If the blade is not balanced, file some
metal off the heavy end of the blade in the sail
area only
1. Blade
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3.
Repeat this procedure until the blade balances.
73
Figure 106
(Figure
107).
(Figure
106).
Figure 107
2. Balancer
(Figure
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