Landoll VT Plus 7550, Руководство оператора

Страница: 82 / 96

4-14 F-987-0519
OPERATION AND MAINTENANCE
Scraper Adjustment
The 7550 is equipped with rigid scrapers at regular
spools with dual scrapers at the disc bearings.
Figure 4-14: Scraper Adjustment
1,250 Foot-Pounds of Torque
Figure 4-15: 1,250 Foot-Pounds of Torque
1. Rigid scrapers should be set initially as close to the
disc blade as possible without rubbing
(approximately 1/8”) ( See Figure 4-14. ) A slotted
hole at the top of each scraper is provided for
individual adjustment. Adjustments may be made for
entire gangs, by loosening the u-bolts around the
angle-iron scraper bars and sliding the whole bar.
Scraper arms are made of spring steel. In wet
conditions, the scraper may be set against the disc
blade and will function as a spring-loaded scraper.
2. Scraper blades have two positions. The blades are
initially set in the front position to position scraper
closer to the spool. This position will perform better in
wet and heavier residue conditions. The blade may
be moved back for dryer conditions and climates
where less scraper action is needed.
3. Dual scrapers are provided at the bearing locations
to scrape the disc blade and to limit the amount of
soil and residue carried into the bearing hanger.
Scrapers can be individually adjusted in or out from
the concave side of the disc blade.

CAUTION
Front Gauge Wheels
1. The 7550 is equipped with castering gauge wheels at
the outer front corners of each wing. These gauge
wheels are used to limit depth of the wings, and
prevent gouging and buckling of wing frames.
2. Gauge wheels are not intended to carry the wing, but
prevent excessive depth. Adjust the wheels to carry
some weight, but not enough to hold the wing from
reaching operating depth set with the main lift
hydraulics.
IMPORTANT
Excessive down pressure can cause the implement
to throw a center ridge.
3. To adjust the gauge wheel depth ) ( See
Figure 4-16. ) , loosen the 3/4-10 x 5-1/2 hex screw.
Adjust the nuts on each side of the gauge wheel
mount. A wrench is provided on the implement for
this adjustment. Securely tighten the adjusting nuts
when complete along with the 3/4-10 x 5-1/2 hex
screw. All gauge wheel assemblies should be set the
same. Verify adjustment by gauge provided on front.
Figure 4-16: Front Gauge Wheel
´
3281'6
38//
)227
Tighten all 1-3/4” nuts to 1,250 foot-pounds of
torque (
See Figure 4-15. )
3/4-10 X 5-1/2
HEX SCREW
1-1/4-7 HEX NUT
GAUGE WHEEL
MOUNT