AUTO GYRO Cavalon Maintenance Manual page 247

62-11-00 5-1 CHECK-ADJUSTMENT: ROTOR SYSTEM ALIGNMENT
GENERAL, REFERENCES AND REQUIREMENTS
Task may only be performed by an organization or individual trained and entitled to carry out 'Professional
Maintenance'!
Rotor system must be removed, see
Rotor system must be placed on suitable supports to avoid scratching of the blades or bending moments at the
blade attachment
SPECIAL TOOLS AND CONSUMABLE MATERIALS
None
PRECAUTIONS AND SAFETY MEASURES
WARNING: Object is heavy! Inadequate handling could cause injury. Use proper lifting techniques or
assistance!
WARNING: Do not lift or support the rotor system at its blade tips as the bending moment due to the
weight of the hub assembly may overstress the blade roots!
WARNING: Never place the rotor system on a dirty or grainy surface and avoid bending moments at the
blade attachments!
WARNING: When handled incorrectly the rotor system can be damaged irreparably. If undetected this
may have catastrophic consequences!
PROCEDURES
1 Place rotor system on suitable stands on level ground. Make sure stand surface is level and stand is oriented
exactly 90 degrees to rotor blade (see Fig. 1).
2 String measuring cord between both outer blade tips. Position at rivet as depicted in Fig. 2 'Positioning of
measuring cord'.
3 Adjust distance of stand carefully so that measuring cord is strung slightly above the central grease nipple.
Verify center position of grease nipple (Fig. 3).
4 In case the measuring cord deviates by more than 2 mm from center position (i.e. grease nipple inner bore),
adjust rotor system linearity. To do so perform the following work steps:
5 Untighten the self-locking nuts of the blade attachment bolts, except for the most inner bolt(s). Counter-hold
bolt head to prevent it from turning.
6 Adjust linearity/alignment of rotor system and tighten nuts. Perform alignment check. If necessary, repeat
procedure from step 5 on.
7 Torque-tighten nuts with 15 Nm from the inside to the outside. When doing so, counter-hold bolts to prevent
any damage to the hub and blade holes.
8 Perform final linearity/alignment check. If necessary, repeat procedure from step 5 on.
AMM-CV-915iS/916iS-EN-
E-2023-12
Aircraft
Maintenance Manual
62-11-00 4-1
Part E - 62-11-00 5-1
AutoGyro
Cavalon 915 iS / 916 iS
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