39
Roller for seed and fertiliser
No. Size
cm³
Colour
1
20
yellow
- suitable for maize
- not suitable for beans
and granular fertilisers.
2
40
red
3
100
blue
4
170
yellow /
alu
4a
170
yellow /
alu
2 x 85 cm³ for double
Venturi area
5
250
black
6
320
yellow /
alu
7
500
yellow
8
800
metal
On machines with double Venturi area and two
seed boxes the rotor 4a (2 x 85 cm³) must be
used when using the type 170 rotor.
Otherwise the seed is unevenly distributed to
the two halves.
Absolute leak tightness of components
must be assured with all work on the
metering unit. Leaks lead to metering
errors.
When assembling the metering unit
all contact faces must be sealed and
distortion of the housing caused by
screwing on must be avoided.
Metering unit
The HORSCH metering unit consists of only
a few individual parts and can be dismantled
without tools.
Metering unit
1. Housing
2. Drive motor
3. Clearing valve with sealing lip
4. Roller
5. Side cover with roller bearing
6. Side cover for pressurized hopper with scraper plate
7.
Side cover for normal hopper with rape brushes
Whenever performing assembly work
on the motor, you should always mount
it with the bore facing down, so that no
water can run into the housing.
Rollers
Various cell rollers are available for the place-
ment of the various seed sizes and quantities.
The choice of rollers is described in the DrillMa-
nager instructions.
The cell rollers are arranged according to their
delivery rate per revolution.
5
1
3
8
7
6
2
4
4a
6
2
3
1
5
7
4
