Centre Cutterhead Height of
Cut Correction Adjustment
With all cutterheads set at the same HOC via the
indicator rings, it may be noticeable that the center unit
produces a higher cut finish compared to the wing units.
The center unit is pulled and the wing units are pushed,
this presents marginally different cutting angles relative
to the ground. The amount of HOC variation, which
results from this, will be influenced by the terrain but
satisfactory results can usually be achieved by setting
the center cutterhead HOC indicator ring lower than
the wing unit settings.
Cutterhead Position Control
The cutterheads may be raised or lowered independently
using the bank of 3 lift control switches.
1. To lower the cutterheads, operate the lift control
switches in a downward direction and release.
The cutterhead drive switch must be on (forward)
to do this, the cylinder drive will engage when the
cutterheads are approximately 150 mm (6˝) above
ground level. The cutterhead (s) are now in ‘float’
mode and will follow the ground contours.
2. To raise the cutterheads, operate the lift control
switches in an upward direction and hold in
position 3. If the cutterhead drive switch is in
the
On
position the cylinder drive will disengage
immediately.
3. Release the lift control switches when the
cutterheads are at the required height.
The control switches will automatically return to
position 2 (neutral) and the arms are hydraulically
locked into position.
Adjusting the Cutterhead Auto
Limited Lift
To activate, press the Auto Limited Lift switch to the
ON position.
To deactivate, press the Auto Limited Lift switch to the
OFF position.
Manual limited lift using the three lift control switches
is always available regardless of the position of the Auto
switch.
g014433
Figure 40
To raise the cutterheads to the limited lift position:
momentarily operate the switches in an upward
direction.
The cylinder drive will disengage immediately and the
cutterheads will stop raising, approximately 150mm (6
inches) above ground level.
This operates with the cutterheads lowered and rotating.
Auto limited lift in reverse causes the cutterheads to rise
automatically to the limited lift position when reversing.
They will return to the floating position when returning
to forward travel. The cutting cylinders continue to
rotate during this operation.
27
Summary of Contents for CT2120 30655
Page 55: ...Schematics Showing Beacon Lights Aux Power Connector g014756 55 ...
Page 61: ...Notes 61 ...
Page 62: ...Notes 62 ...
