3
Disc harrow can be offset by shifting locking position of drawbar as shown in
fig. 2.1(b)
b) Disc harrow offset adjustment
Gang angle (Angle between two gangs) ranges from 0° to 50°. The angle can
be increased for better penetration in dry soil while it should be reduced to avoid
clogging in wet soil as shown in fig. 2.1(a)
To eliminate uneven penetration and side draft, leveling is done by means of
top link. While tractor pulls to right the rear gang should be lowered a little.
When the tractor pulls to the left the rear gang should be raised.
d) Scraper adjustment
The scraper can be adjusted by loosening the bolts at the scrapers clamp.
c)
Disc harrow leveling
Fig. 2.1(b)
Fig. 2.1(d)
4
e) Depth control
The depth can be controlled by increasing or decreasing the gang angle of the
implement.
f)
Drawbar angle adjustment
A
B
C
D
4.
Hole (D) is used for tractor hitching point.
2.
The hole in the upper and lower plates are used to change the working
angle of the front disc gang carrier.
1.
For medium hard soil, the drawbar can be utilized in the central position (A)
of upper and lower plates.
3.
The hole (B) is used for increasing penetration & hole (C) is used for
decreasing penetration.
g) Drawbar vertical adjustment
Fig. 2.1(f)
Fig. 2.1(g)