Landoll 7812, Operator And Parts Manual

Page: 18 / 52

4-2 F-1127-0622
TABLE OF CONTENTS INDEX
Depth Control
WARNING
Rear Reel/Roller Control
The HSL is equipped with a reel/roller system that
stabilizes the machine. It reconstitutes the worked soil
and provides a finished characteristic to the soil surface.
See “Finishing Features,” on page 13-1 .
The down pressure of the reel/roller system is controlled
by adjusting the adjustable link (Ratchet Jack) between
the Main Frame Spring Assembly and the Reel.
The rear reels play a major role in the final performance of
the HSL. If the down pressure on the reels becomes
extensive it will have an adverse effect on the overall
system. If too much down pressure is applied to the rear
reels they will hold the rear row of disc units out of the
ground. This will cause the HSL to track to the left hand
side. Too much down pressure on the rear reels can also
lead to bouncing. On the other hand, too little down
pressure will cause the machine to have decreased
stability in the field. Too little down pressure also tends to
leave a less desirable field finish and does not
reconstitute the soil profile to an optimum level.
Lateral Adjustment of Rear
Gang Assemblies
The front row of disc blades are mounted on a gangbar
and fixed in position laterally. They are designed to only
rotate in place around their torsion mounts.
The rear row of blades are mounted on gangbar
weldments which can be adjusted laterally. The gangbars
are secured with 3/4-10 carriage bolts extending through
slotted brackets.
See Figure 4-1.
• The rear gang assemblies can be adjusted to the
right or left several inches. The gang bar adjustment
bracket, (Landoll P/N 187631) is designed to simplify
adjusting the gangs laterally.
• The HSL is set at the factory for an optimum floor cut.
As the disc blades wear down you will find it
beneficial to adjust the rear gangs to the machines
right side.
Figure 4-1: Lateral Adjustment of Gang Assemblies
The Depth Control is controlled by the tractor in
combination with the rear roller or can be
controlled by the tractor itself.
(TOP LINK
MOUNTING POINT MUST BE USED)
19-1/2"
1"
END OF GANGBAR
END OF CLAMP
71"
7812-13 MODEL
TYPICAL ROW SPACING
10"