Removing The Feed Chute Ato; Removing The Blade Discs; Installing The Blade Discs - Viking GB 460 Instruction Manual

12.2 Removing the feed chute
ATO 400
Risk of injury:
Switch off the machine. Detach the
spark plug socket before
unscrewing the On / Off switch (1).
Always wear thick gloves.
If it is not possible to perform any
work on the blade discs after
removing the feed chute, always fit
the blade cover for safety reasons.
( 7.4)
● Release the On / Off switch (1) until the
feed chute ATO 400 (2) can be folded
to the rear.
● Remove the feed chute ATO 400 (2).
The locking device for the blade
discs is activated automatically
after the chute has been removed.
When locked, the blade disc is still
able to turn approx. 360° as far as
the stop.

12.3 Removing the blade discs

Risk of injury:
Always wear gloves.
Never touch the blades
until they have come to a
standstill.
Detach the spark plug socket.
● Remove the feed chute ATO 400.
( 12.2)
0478 216 9905 A - EN
1 Unscrew the blade fastening screw:
● Position the assembly tool (1) on the
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blade fastening screw (2) and turn anti-
clockwise slowly and carefully until the
blade discs are stopped by the stop.
Detach the assembly tool (1).
In order to prevent injuries, the
blade cover must always be
attached when loosening the blade
fastening screw (see view Z).
● Install the blade cover. (
● Insert the assembly tool (1) into the
bore of the blade cover (3) and position
on the blade fastening screw (2).
● Loosen the blade fastening screw (2)
using the assembly tool (1) and
unscrew completely.
● Remove the blade cover. (
● Remove the blade fastening screw (2),
lock washer (4) and clamping ring (5).
2 To remove the wing blade and blade
disc for soft material:
● Remove the short wing blade (6) and
long wing blade (7).
● Lift off the soft material blade disc (8).
3 Remove the insert:
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● Unscrew and remove the screws (9).
Lift off the insert (10).
4 To remove the blade holder and
blade disc for hard material:
● Tighten the screw (11) using the
assembly tool (1) and in doing so
detach the blade holder (12).
● Unscrew and remove the screw (11).
● Remove the blade holder (12) together
with the clamping ring (13).
● Lift off the hard material blade disc (14).

12.4 Installing the blade discs

Risk of injury!
Always wear gloves.
Observe the specified
tightening torque of
36 - 44 Nm when tightening the
blade fastening screw, as the
secure attachment of the two blade
discs depends on this. Before
7.4)
attaching the two blade discs,
check to see that they are OK and
not bent and the blades have no
notches, cracks or pieces chipped
out.
Observe the wear limits of the
blades. (
7.3)
Both blade discs must always be
installed.
Carry out each assembly step from
1 to 5.
Clean the two blade discs and the
blade disc mounting on the
machine before installing.
Furthermore, ensure that the
feather key is inserted in the blade
shaft.
1. Insert the hard material blade disc
(Figure A)
● Insert the hard material blade disc (1)
with the three fitted blades facing
upwards.
Allow the rectangular blade
mounting (2) of the blade disc to
engage in the rectangular mounting (3)
in the bearing ring.
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12.9)
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