Field Adjustments Continued:
5.
SETTING CULTIVATOR
DEPTH
a) See Fig 8. Hydraulic Depth Control Type
Hydraulic type depth
uses a
valve to shut
off oil flow to hydraulic cylinders. When cultivator is
lowered the valve actuator makes contact with valve
piston stopping oil flow.
depth is set by
adjusting position of valve actuator. This flow valve is
located on centre frame of cultivator.
Set cultivator depth as follows:
Step 1
-
Lower cultivator to ground.
Step 2
-
Loosen locking screw on valve actuator.
Step
3
-
Set valve actuator so the distance between it
and valve piston will give desired depth.
Tighten locking screw.
Step
4
-
Operate cultivator to check cutting depth,
adjust actuator again if depth is not correct.
See Fig.
9. Mechanical Depth Control Type
The cutting depth is controlled by installing segments on
shaft of each rockshaft cylinder. Use up to six
segments for each cylinder which vary from
to
2"
DEPTH
to
To determine total segment
SELMENTS
length, lower cultivator to working depth and measure
dimension "A". Use segment chart (Table on page 12
to determine segment combination that is closest to
dimension "A". This segment chart decal is also on
cultivator frame.
IMPORTANT:
All cylinders must have the same total length
of depth control segments.
6.
ROCKSHAFT
-
Periodically the hydraulic lift cylinders on inner and
wings
not be synchronized with centre frame
cylinders. This will cause uneven cutting depth. If this happens it will be necessary to
the lift cylinders. Rephasing is done by lifting
cultivator completely out of the ground and holding the hydraulic control lever until all five (5) rockshaft cylinders are fully extended. When the first
cylinder is fully extended oil continues to flow through the bypass port which will fully extend the next cylinder- This process is repeated until all
cylinders are fully extended.
Page
11
