Presentation
General 9
MBCS (Moveable Blade Control System)
Blade mobility permits steep ditch cutting angles and back sloping
outside of overall machine width. The circle is held in place by ad-
justable clamp plates and guide shoes. Bearing surfaces are DU-
RAMIDE™-faced to maximize service life. Hardened teeth are cut
on the outside of the circle. Oil is directed to the two drive cylinders
by a circle timing valve. The cylinders are arranged 90° out of
phase to ensure consistent power. The moldboard is provided with
replaceable cutting edge and end-bits. The drawbar is a narrow
“T” design for optimum visibility to the work area.
Hydraulic system
The closed-center hydraulic system uses a pressure and flow
compensated (load-sensing) variable displacement piston pump.
The pump supplies oil to the implements, the steering and the en-
gine cooling fan system.
The cooling fan is driven by a fixed displacement vane-type motor.
Fan speed is variable and is determined by various cooling re-
quirements. The fan operates between pre-determined minimum
and maximum speeds. The fan remains at its minimum speed until
there is a demand for cooling. Fan speed will automatically in-
crease with the demand for cooling.
Lock valves (counterbalance valves) are incorporated into the
blade lift, moldboard tilt, circle shift, wheel lean and articulation cir-
cuits to prevent cylinder drift. The control levers are short throw,
feathering type located on an adjustable steering pedestal.
All Wheel Drive
G726B and G746B are All Wheel Drive models. The system oper-
ates in gears 1 through 7. It is powered by two electronically con-
trolled, variable displacement hydraulic pumps in a closed loop
system. Each pump supplies one front wheel motor.
Front wheel motors are two-speed, high torque, radial piston, cam
lobe type. Each wheel motor has a separate speed sensor.
The system has a 16-speed aggression control dial.
Equipment and attachments
The circle, drawbar and moldboard equipment is fully maneuver-
able using hydraulic cylinders. Optional attachments include:
– Dozer blade
– Rear-mounted ripper-scarifier
– Mid-mounted scarifier
– Front-mounted scarifier
– Windrow eliminator
– Push block (counterweight for ripper)
– One-way plow
–V-plow
– Hydraulic snow wing (high and low bench)
– A-frame (used with V-plow and One-way plow only)
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