Landoll 9650 Field Cultivator - Manual (Page 75)

OPERATION AND MAINTENANCE
4-9
General Operation
1. The horsepower requirements are typically 6-8 PTO
horsepower per foot of cut for the Field Cultivator.
This will vary widely due to speed, depth, moisture,
residue, and types of soils. Local dealers can help in
making recommendations for your areas.
2. Operating speed is typically 5-8 mph. Excessive
speed can cause the unit to bounce and create
uneven working depth and ridge.
3. Lift wheels must always be in contact with the ground
and carrying some implement weight.
4. Avoid turning sharply with the Field Cultivator in the
ground. This can put excessive side load on the
shanks, harrow, and hitch. Always raise the Field
Cultivator completely when making turns or backing
to prevent shank damage. Reduce speed at field
ends, and raise cultivator before making turns.
Spring Shank
1. The Field Cultivator may be equipped with spring
shanks. The spring shanks feature a 185 lb. point
load and a 10” trip height to clear field obstructions.
Shanks are 5/8 x 1-3/4 heat treated steel.
2. There is no regular maintenance required on the
shanks. The main pivot point of the spring shank has
replaceable hardened wear bushings that pivot on a
heat treated clamp bushing.
NOTE
Main pivot bolt should be tightened securely to prevent
rotation. Torque main pivot bolt to 140 ft.-lbs.
3. When adjusting/assembling the spring assembly,
tighten the upper spring bolt, but leave approximately
1/8” gap above the spring jam nut (See Figure 4-10.)
This will leave the proper clearance for the spring to
pivot. Lock the jam nut against the top of the spring,
not the top of the mount. Likewise do not over tighten
the lower spring cross bolt. Remove any slack in the
bolt, but still allow the lower spring to pivot freely.
Sweeps
1. The spring or s-tine shanks will accept a wide variety
of sweeps and points. Recommended sweeps for the
cultivator are standard 47º sweeps in 7 to 10 inch
widths using 7/16 diameter mounting hardware.
Check clearances when using larger sweeps to avoid
interference with tires.
Figure 4-10: Spring Adjustment
Wheel Bearing Maintenance
Wheel bearing maintenance should be performed at the
beginning of every season of use. Check the wheel
bearings periodically for excessive end play. If needed,
adjust or replace them using the following procedure:
1. Place the frame on blocks or stands sufficient to lift
the tire clear of the ground.
2. Remove the tire.
3. Remove the hub cap, cotter pin, slotted nut and
washer.
4. Remove the hub. Clean and inspect the bearings and
hub cavity. Replace any worn or defective parts.
5. Repack the bearings using a high-quality wheel
bearing grease.
6. Slide the triple-lip seal onto the spindle. Do not install
the seal into the hub.
7. Slide the inner bearing cone and hub onto the
spindle.
8. Install the outer bearing cone, washer and slotted
nut.
9. Tighten the slotted nut while rotating the hub until
there is a slight resistance to wheel rotation. Then,
back the slotted nut off one notch, until the wheel
rotates freely without end play.
10. Slide the triple-lip seal to the hub and install the seal
in the hub.
NOTE
The triple-lip seals should point away from the hub to
keep contaminants out and allow grease to pass.
11. Install a new cotter pin and replace the hub cap.
1
8
5/8-11 X 3 HEX HEAD
CAP SCREW
SPRING PLATE
5/8-11 HEX JAM NUT
SPRING ASSEMBLY
SHANK CLAMP
WELDMENT
MAIN PIVOT BOLT
spring adjustment