General maintenance and repair (all types) 9
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9.8 Checking the agitator drive
The agitator must operate at a constant speed in order to ensure an even flow of
the fertiliser.
Agitator speed: 15 - 20 rpm.
In order to attain the correct agitator speed of 15-20 rpm, the agitator requires the
resistance of the spreading material inside it. This is the reason why it is entirely
possible that even with a fully functional agitator, the correct speed cannot be at-
tained or that the hopper seasaws, when the hopper is empty.
If the speed with full hopper lies outside of this range, the agitator needs to be
checked for wear and tear.
Checking the functions of the agitator
Preconditions
The tractor is parked.
The ignition key has been removed.
The machine is parked on the ground.
Figure 9.5: Checking the agitator drive
[1] Right side agitator head (in direction of travel)
[2] Left side agitator head (in direction of travel)
[3] Connecting rods
Arrows: Rotational direction of spreading discs
NOTICE
There is a left- and a right-hand agitator. Both agitators rotate in the same di-
rection as the spreading discs.
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