breviglieri mekfarmer K 270, Operating And Maintenance Manual

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mekfarmer
K 270
- 31 -
macchine agricole
CAUTION
If blades must be changed, make sure that the new ones are mounted in the same positions as the old ones.
DRIVING TORQUE VALUES Nm
Type 6.6 8.8 10.9 12.9
M8x1 15 26 36 44
M10x1,25 30 52 74 88
M12x1,25 51 91 127 153
M14x1,5 81 143 201 241
M16x1,5 120 214 301 361
M18x1,5 173 308 433 520
M20x1,5 242 431 606 727
M22x1,5 321 571 803 964
M24x2 411 731 1028 1234
DANGER
If the tines clog, it is strictly forbidden to attempt to clean the machine whilst it is operating. First disengage the PTO, stop
the tractor and engage the parking brake. Wait until all moving parts have come to a complete standstill, then proceed with
the cleaning operations with the utmost care.
4.9 GEARBOX
The tine rotors can spin at various speeds, depending on the gear pairs mounted in the gearbox. It also allows the soil to be broken
up to various degrees depending on its nature, the amount of moisture it contains, the ground speed, etc.
Only use the pairs indicated in the table:
GEARBOXES - PTO 1000 rpm
A (PTO) 30 27 33 23
B 39 43 36 46
Trottle (rpm)
365 298 435 238
The faster the rotors spin, the more the soil is crumbled, but tractor power draw and blade wear will also be greater. You are advised
to use the lowest rotation speed able to work the soil in the required way. Carry out these simple operations in both gearboxes to
vary the speed of the rotors:
▪
Remove the screws that fix the rear cover of the gearbox ( 5 Fig. 1 ) and take off the cover. Take care, as oil could spill out
▪
Remove the gears from the shafts
▪
Fit the required pairs of gears on to the shafts
▪
Fit back the cover and re-tighten the screws
Make sure you use the right gears as gears of different pairs cannot be mounted.
4.10 REAR BAR
To level and crumble the soil to a greater degree, the harrow has a levelling bar positioned behind the tines. It can be adjusted in
height by means of crank screws (
6 Fig. 1 ). It is advisable to start work with the bar in the upper position and to then adjust it to
the required setting. Make the adjustments by keeping the bar at the same distance from the soil as far as possible. Avoid using
the bar at depth as it could be damaged. Whenever the position of the rear roller must be changed, adjust again in order to skim
over the ground.
4.11 REAR ROLLERS
The machine can be equipped with various types of roller. The main ones are: Packer roller, Cage roller, Spiked roller.