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4-4.8
Hydraulic Disc Operation.
a. Lower the discs and hold the valve until all
cylinders are completely extended. Then raise
the discs.
b. Lower the machine until the shanks are at
the desired working depth.
Figure 4-4 1200 Foot-Pounds of Torque
IMPORTANT
USE THE DEPTH GAUGE FOR RELATIVE
DEPTH OF DISCS. IT DOES NOT INDICATE AC-
TUAL DEPTH OF DISCS.
c. Position the discs at desired depth by ex-
tending or retracting the disc adjust hydraulic
cylinder(s).
d. Adjust the wing discs to operate at the same
depth as the center discs by adjusting the
screw adjust on the wing disc rockshafts.
(See Figure 3-17).
e. Manually adjust discs: Adjust the ratchet
jack on each disc gang to the desired depth.
Insure that all discs are set at the same
depth.
4-4.9
Scrapers: Loosen the U-bolts that hold
the scraper assembly in place. Slide the
scraper assembly toward the disc blades un-
til there is enough pressure on the scrapers
to clean the discs.
CAUTION
TIGHTEN ALL 1-1/2" NUTS TO 1200
FOOT- POUNDS OF TORQUE.
4-5
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