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SP7060 PAVEMENT SAW • OPERATION MANUAL — REV. #0 (02/13/09) — PAGE 35
BLADE SHAFT ENGAGE SYSTEM / WHEEL DRIVE SYSTEM
2
1
Figure 30. Blade shaft Engage/Disengage
To Re-adjust for full cutting depth:
1. Hold the raise/lower switch in the lowering position and
rotate the depth control knob
clockwise
until the saw is
fully lowered.
2. Rotate depth control knob clockwise an additional 1 turn.
To disable the depth stop when it is not needed:
1. While holding the raise-lower toggle switch FORWARD,
rotate depth control knob CLOCKWISE until saw is at full
depth position.
2. Rotate depth control knob an additional 1-2 turns.
BLADE SHAFT ROTATION — DISENGAGEMENT
SYSTEM
The engine MUST be at IDLE when engaging or disengaging
blade shaft drive (Figure 30, item 1).
Hydraulic system pressure must be sufficient to
enable the blade shaft engage/disengage feature.
Increasing engine RPM slightly may help facilitate
the system pressure necessary to engage the
blade shaft drive.
To STOP blade shaft rotation:
Push rocker switch labeled BLADE SHAFT DISENGAGE
(Figure 30, item 2). The engine (via the hydraulic lift cylinder)
will tilt forward, disengaging the belt drive.
To START blade shaft rotation:
Push rocker switch labeled BLADE SHAFT ENGAGE
(Figure 30, item 2). The engine (via the hydraulic lift cylinder)
will tilt backward, engaging the belt drive.
Figure 31. F-N-R Control
WHEEL DRIVE SYSTEM
The 7060 Series features a cable-controlled hydraulic
powered gear motor system with infinite Forward-Neutral-
Reverse (F-N-R) speed adjustment. This is controlled by
the operator through the speed control handle located on
the control panel. The saw is designed with a locked axle
drive and can travel forward at transportation speeds up to
275 feet per minute.
A bi-directional variable displacement transmission pump
powers two hydraulic wheel motors that are directly coupled
to the wheels. This design provides vehicle propulsion in
both forward and reverse depending on the position and
direction of movement of the F-N-R control handle. The
wheel drive system also provides dynamic braking action.
Refer to Figure 31.
■
To increase the forward speed, slowly move the control
handle FORWARD.
■
To decrease the forward speed, pull the control handle
BACKWARD.
■
When the control handle is in the Neutral position the
saw will have neither a forward nor reverse motion.
■
As the control handle is passed backward through the
neutral position the saw will start to move in REVERSE.
Reverse speed is also controlled by the position of the
control handle.