4. Uncap and connect the two hydraulic hoses as
shown in Figure 4-41.
• Connect hydraulic hose at top of the lift cylinder
to the right side of the grader nose.
• Connect hydraulic hose at bottom of the lift
cylinder to the left side of the grader nose.
Ensure the attachment is properly
secured before operating to prevent serious injury or
damage.
Hydraulic Hose
Connection
Figure 4-40. Connect Hydraulic Hoses
Operating Front Attachments
The front blade lever is used to raise and lower all front
attachments. This lever is located on the steering
control panel. (Figure 4-41)
• Pull lever rearward to raise the attachment.
• Push lever forward to lower the attachment.
Front Attachments Lever
Figure 4-41. Front Attachments Control Lever
Front Blade Float
The front blade oat option allows the blade to follow
a varying surface using only the weight of the drawbar,
circle and moldboard. Blade oat prevents damage
to uneven surfaces but requires a hard surface such
as asphalt or frozen ground to prevent gouging the
surface. In areas with loose gravel on the road surface,
using blade oat may windrow the gravel onto the road
shoulder.
Turn the Front Float switch on the main control panel up
to the ON position to engage this feature. (Figure 4-42)
Front
Float
Figure 4-42. Front Blade Float Switch
Operation
LeeBoy 685D Motor Grader4-26
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