horsch Focus 4 TD, Руководство по эксплуатации, Страница: 74 / 108

9 | Pneumatic system
74 60059040 • 02 • 07/2021 • en
Clamping taper
When tightening the screws, especially with a new assembly, the fan wheel will
move towards the housing in the direction of the protective grid.
1. Align a loose flange closer to the hydraulic motor, the gap between impeller
and intake side must remain as small as possible.
2. Clean the clamping faces from oil and grease.
3. The clamping screws must be tightened uniformly and in several steps. Use a
plastic hammer or hammer shaft in between to carefully knock on the flange
to facilitate pulling onto the cone.
4. The inch screws in versions no. 10-24 4.6 may be tightened with a torque of
max. 6.8 Nm.
5. After tightening check the impeller for free and even running.
9.2 Tram line control flaps
The distributor is equipped with flaps for the tram line control.
Tram line valves on distributor tower
The arrangement of the flaps depends on the
• working width of the drill
• tram line rhythm
• track width of the spraying and spreading machine
• number of flaps per track.
The flap function can be checked by examining the air flow on the seed coulters or
the seed placement on the surface.