mekfarmer
180
K
- 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
Classe
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 540 rpm
A
(PTO)
35
38
37
36
27
34
28
33
29
32
B
26
23
24
25
34
27
33
28
32
29
Trottle
(rpm)
350
430
402
375
207
328
221
307
236
288
GEARBOXES
- PTO 1000 rpm
A
(PTO)
26
21
23
24
25
27
28
29
B
35
40
38
37
36
34
33
32
Trottle
(rpm)
359
253
292
313
335
383
410
438
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
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