KUHN EL 92, Assembly & Operators Manual

Page: 36 / 46

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To recognise if blades are right or left, point the cutting edge in the direction of rotation (F) and note the direction
of their curved portion.
A = machine forward direction
To fit blades helicoidally, proceed as follows :
- Always start fitting each flange with a left blade, placing it opposite mark (R), shown by a chamfer or a hollow (see
fig. 44, page 33) ;
- All blades should be fitted on the left face of the flanges, except on end flanges on type B rotors (see photo 46,
page 33).
- Fixing bolt heads should face the blades, washers and nuts should face the flanges, except on end flanges on
type B rotors.
End blades (rotors type B) : depending on the way the blades have been fitted (2 or 3 pairs of blades per flange),
the left end flange is fitted with 2 right blades diametrically opposite to each other or 3 right blades (photo 46,
page 33). Likewise, the right end flange will be fitted with 2 left blades diametrically opposite to each other or 3 left
blades (photo 46, page 33).
Tighten nuts to a torque of 30 daNm / 220 ft.lbs.