15
Axle load calculations
Designations:
G
C
–
tractor weight,
T
P
–
front axle load of the empty tractor,
T
T
–
rear axle load of the empty tractor,
G
P
–
total weight of rear-mounted device,
G
T
–
total weight of front-mounted device,
a
–
distance between the centre of gravity of the front-mounted device and the centre of the
axle,
b
–
tractor wheel track,
c
–
distance between the centre of the rear axle and the centre of the hitch bolt of the
rear device,
d
–
distance of the machine's centre of gravity from the tractor's hitching pins (for
suspended machines assume 1.4 m, for machines with a seed drill assume 3 m),
x
–
distance of the centre of gravity from the rear axle (if the manufacturer does not
specify this parameter, enter 0.45).
Minimum load at the front for rear-mounted machine:
Actual front axle load
Actual total weight
Actual rear axle load
4.2 Coupling the disc harrow to the tractor
The tractor wheel tyre pressure should be in accordance with the manufacturer's
recommendations. The lower links of the three-point hitch should be at an equal height,
at a spacing corresponding to the spacing of the lower suspension points. When
connecting the disc harrow to the tractor, the harrow should stand on firm and level
ground.
