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Figure 24
1. Depth adjuster input shaft
2. Locking plate
4.
Push in on the socket or use your hand to press
on the locking plate.
5.
Rotate the depth adjuster clockwise to reduce
the aeration depth or counterclockwise to
increase the aeration depth.
6.
Rotate the depth adjuster input shaft until the
desired depth is attained as shown on the depth
indicator decal
(Figure
Note:
17 revolutions of the depth adjuster input
shaft equals approximately 6.4 mm (1/4 inch)
depth change.
Understanding the Tractor
Controls
It is necessary to familiarize yourself with the operation
of the following tractor controls before you are able to
operate the aerator:
•
PTO engagement
•
3 point hitch (raise/lower)
•
Clutch
•
Throttle
•
Gear selection
•
Parking brake
Important:
Refer to the tractor operator's
manual for operating instructions.
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3. Depth indicator decal
4. Depth alignment mark
(Figure
24).
24).
Understanding the
Principles of Operation
The 3-point hitch linkage of the tractor lifts the aerator
for transport and lowers it for operation.
The power take-off (PTO) power from the tractor is
transmitted via shafts, a gearbox, and drive belts to a
number of crankshafts which drive the tine holding
arms into the turf surface.
As the tractor travels forward with the PTO engaged
and the machine lowered, a series of holes are
created in the turf surface.
The penetration depth of the tines is determined by
the height of the depth control.
The distance between the holes created is determined
by the gear ratio (or hydrostatic traction pedal position)
of the tractor and the number of tines in each tine
head. Simply changing engine rpm does not change
hole spacing.
Practicing the Operating
Procedures
Important:
When connecting the PTO, ensure
that the aerator is not lifted higher than is
necessary. Lifting the machine too high will cause
the PTO shaft knuckles to break
PTO can operate up to an angle of 25°, but can
never exceed a 35° angle when the aerator is at
its highest position, or severe shaft damage may
occur.
1. Breakage will occur here.
Before using the aerator, find a clear area and practice
operating the tractor with the aerator attached.
Operate the tractor at recommended gear settings
and PTO drive speeds and become thoroughly
familiar with the aerator/tractor handling. Practice
stopping and starting, raising and lowering the aerator,
disengaging the PTO drive and aligning the machine
with previous passes. A practice session ensures
20
(Figure
25). The
Figure 25
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