Landoll 2000 Series, Руководство оператора, Страница: 33 / 42

OPERATION AND MAINTENANCE
4-7
Disc Adjustment
Adjust the disc to the proper depth and pitch to create the
desired weeding effect. Discs working at different settings
from each other tend to make the machine fight itself.
Also, discs working too deeply into the soil tend to throw
up excess dirt, resulting in root pruning, which causes the
sweeps to plug. To adjust the discs
(See Figure 4-5) :
1. DEPTH - Remove the 1/8 hair pin and clevis pin from
the offset weed disc spindle weldment, and set the
disc assembly to the desired depth. Standard depth
for optimum weeding is 1" to 1-1/2” below the
surface. Reinstall the clevis and hair pins.
2. WIDTH - Loosen the wedge casting in the bottom of
the tool frame. Remove the weeding disc lock pins
from the tool frames and disc brackets. Move the disc
assembly in or out as needed, replace the weeding
disc lock pins, and retighten the wedge casting.
Hammer upward on the head of the 1/2-13 X 8-1/2
hex head cap screw to set the wedge tightly and
replace hex lock nut.
IMPORTANT
Retighten the wedge casting cap screw several times
during the first hour of the machines operation.
3. ANGLE - Remove the clevis and hair pins from the
disc hiller brackets. Adjust the right and left disc
assembly to the same angle. Four angle settings are
allowed at: 11°, 15°, 19°, and 23° (15° nominal).
Replace the pins.
Disc Bearing Maintenance
Check all roller bearings occasionally for excess end
play. To adjust or replace the roller bearings:
1. Place the cultivator frame on blocks or stands just
high enough to lift the tire clear off the ground and
stable enough to prevent tipping.
2. Remove the disc/hub assembly (See Figure 4-5.)
3. Clean and inspect the bearings and hub cavity.
Replace any worn or defective parts.
4. Repack the roller bearings using a high quality
grease.
5. Reassemble the hub assembly, bearing, and seal.
6. Tighten the bearings while rotating the hub until there
is a slight resistance to hub rotation. Then, back the
nut off one notch until the hub rotates freely without
end play.
7. Install a new cotter pin and the dust cap.
8. Fill the hub cavity through the grease zerk with
high-quality grease until the grease is forced past the
seal. This will not damage the seal.
9. Wheel bearing maintenance should be done at the
start of every season, and more often when used in
extremely wet soil conditions.