SECTION 4 - ADJUSTMENTS
page 4-7
Calibrating the Scale
Leveling Center Section
SETTING THE FRAME HEIGHT
The depth gauge is mounted to the front gauge wheels and is intended as a reference only. Actual working depth of the air
drill should be set with the ratchet jacks during field operation and checked periodically. Set the depth gauge using the
following procedure.
1. With the down pressure springs of the openers
disconnected, place the air drill fully raised in field
position.
2. Adjust all ratchet jacks on the center and wing gauge
wheels until the ratchet jacks measure 533 mm (21")
center to center.
3. Calibrate all depth scales by moving the faceplate until
the indicator lines up with the calibration line. Tighten
the 5/16" U-bolts to secure depth scale in place.
4. Lower the machine until the depth stop valve is
activated.
5. Measure frame height in position “C” and compare to
the frame height at position “A”.
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