6.0 Operation and Adjustment
6.1 Operating
Optimum soil conditioning will occur when the Trio wing frames are running horizontal (parallel with the
ground). The recommended method to set up the machine to run level requires the desired working depth
to be set via pin adjustment on the packer, and then to bring the wings level, add or remove slices from
the drawbar ram. The chassis should run slightly nose end down.
Forward working speed should be governed by the local conditions as well as the finish produced by the
Sumo Trio.
When uncoupling and parking the trio up, the linkage headstock stands should be set down but only to
carry the weight of the linkage. The weight of the rest of the machine should be spread over the soil
engaging elements (roller, discs, legs ect....)
6.2 Adjustments
Depth adjustment of the Subsoiler legs is achieved by firstly removing the R-clip and the shear pin on a
Shear pin machine or alternatively just the leg pin on a Auto reset. The leg can then be lifted or lowered
to the required position and then the shear pin and clip should be replaced. The maximum leg depth is 400
mm. The easiest and most accessible way to change the leg depths (if available) is to fold the wings up
and slide the legs in or out.
To adjust the disc working depth, the weight must first be taken off the packer arms before the lynch pins
and depth pins are removed. A new depth position can then be selected by replacing the pins in higher or
lower holes. The disc unit slices, mixes and cultivates the top 50 - 100mm of soil.
6.3 Auto-Reset Legs
The pressure in the hydraulic circuit controlling the auto-reset Subsoiler legs can be altered depending on
circumstances and preference up to a maximum of 120 bar. (Exceeding this pressure may result in
damage to the machine). The higher the hydraulic pressure, the more resistance the legs have to tripping.
To alter the pressure in the hydraulic circuit:
1. Fold wings down
2. Change line A of the Auto- Reset circuit.
3. The pressure is set according to the Auto-Reset valve block (mounted on the side of the chassis).
The large gold/silver knob with lock-off ring can be adjusted in & out.
Wind in for more resistance.
Try one at at a time.
4. Once a change has been made to the pressure setting, cycle the legs up and down again to set the
pressure in the circuit.
5. Even though the pressure is locked in the circuit, this system does remain active in that the legs
work position
DO NOT TIGHTEN POINTS UP WITH AIR RACHETS OR OVER TIGHTEN WITH
SPANNERS. EXCESSIVE TIGHTENING WILL RESULT IN POINTS CRACKING
Summary of Contents for TRIO
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