6 - Maintenance
6.19
A - Renewal of yaw dampers:
1. Unfold the boom
To get access to the yaw dampers, the position of the two cylinders
on the centre section must be altered:
2. Remove the bolt (A). The cylinders can now be pushed aside.
3. Screw counter nut (C) inwards and position it against the jag nut
(D).
4. Loosen and remove nut (E).
5. Loosen and remove nut (F), and remove the bolt - on which (F)
was situated - from below. Lift the whole profile part (G), to give full
access to the yaw dampers.
6. Remove the shaft containing the yaw damper.
7. Fasten the shaft in e.g. a jig.
8. Loosen and remove jag nut (D) and counter nut (C).
9. Unscrew the yaw damper from the shaft and replace it with a new
one. Grease the top of the new damper.
10. Place the jag nut (D) on the shaft again and fasten it against the
new rubber damper. Also fit counter nut (C) on the shaft again.
11. Reassemble in reverse order. Remember to position the nut (C)
against the profile now.
12. Carry out the same procedure at the opposite rubber damper.
Subsequently, the yaw dampers must be equally tightened.
To ensure optimal damping and stability of the boom, visual control
of the yaw dampers is necessary at regular intervals.
Inspect that the yaw dampers are:
A. Intact (If not, they must be renewed).
B. In a tight position (If not, they must be tightened).
Yaw dampers renewal and adjustment
