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Cleaning, maintenance and repairs
92
ZA-M BAG0040.8 09.15
12.5.1
Replacing the spreading vanes
WARNING
Danger of ejection of spreading vanes caused by the uninten-
tional release of fixing bolts and quick-release screw connec-
tions!
•
When replacing the spreading vanes, it is essential to replace
used self-locking nuts of the fixing bolts with new ones. A used
self-locking nut no longer has the required clamping force to
produce a secure screw connection.
•
Ensure that the open side of the disc spring is toward the
spreading disc before tightening the wing nut. Only in this posi-
tion can the disc spring pretension and secure the quick-release
screw connection.
It is essential to ensure that the spreading vanes are installed correct-
ly! The open side of the U-shaped spreading vane must be facing the
direction of rotation.
(1) Self-locking nut
(2) Washer
(3) Fixing bolt
(4) Quick-release screw connection
(5) Plate spring
1. Release and remove the fixing bolt.
2. Release and remove the quick-release
screw connection.
3. Replace the spreading vane.
4. Replace the used self-locking nuts of the
fixing bolts with new ones.
5. Apply the assembly paste (KA059) to the
screw threads.
6. Secure each spreading vane with a fixing
bolt, washer and an unused self-locking nut
so that they can move on the spreading
disc.
7. Tighten the self-locking nut with a tool to the
extent that you can still just swivel the
spreading vane by hand.
8. Install the respective quick-release bolted
connection, consisting of a round-headed
screw, plate spring and wing nut. Ensure
that the open side of the spring plate is
pointing towards the spreading disc.
Fig. 51