2
4
5
Fig 20
1
3
Maintenance & Care
Maintenance Schedule (Continued)
9 Bottom Flaps (Fig 20)
The required seed rate is controlled by both the metering wheels and the bottom flaps. The seed flows from the seed box into the metering wheel housings. Inside the metering wheel housing (1) the seed is caught between the metering wheel (2) and the bottom flap (3). The metered amount of seed is transported by the metering wheel to the edge of the bottom flap where it drops off into the seed guide tube which leads to the coulter. Varying grain sizes require the matching of the flap clearance to the different grain sizes. This matching is done by raising or lowering the bottom flaps by using the flap adjusting lever on the LH end of the seed box. If larger foreign particles, e.g. stones get between the metering wheel and the bottom flap, the bottom flap can give way downwards. A strong return spring (4) brings the bottom flap immediately back into the working position.
The metering system should be checked every 1/2 year or before any sowing period with an empty seed box and empty metering housings.
Use the following procedure:
Put the bottom flap setting levers (1) (located on the LH end of the seed boxes) in position “1” for the front box and position “1” for the rear box. Refer Fig 21.
By turning the metering wheel shaft by hand check the flaps are all set to a gap of 0.1 to 0.5mm (refer Fig 20). To adjust individual flaps use the spring tensioning screw
1
2
Fig 21
(5) (Fig 20).
Storage
Preparing the Machine for Storage.
Locate on a dry level surface. The machine should be stored wherever possible with the rams retracted (where fitted). The drive chains should be lubricated with suitable roller chain lubricant before prolonged periods of storage.
For longer term storage remove seed/fertiliser tubes from the coulters and allow to hang without deformation. Check tube lengths when replacing.
It is recommended that maintenance be carried out at the end of the season, giving sufficient time to obtain spare parts and/or carry out repairs if required.
Pt. No. 67372 Issue 0806
29